KF700 Owner's Manual mech-1 by iik11848

VIEWS: 72 PAGES: 32

									 K F 7 0 0 S E R I E S
 O W N E R ’ S M A N U A L




KF750 | KF755 | SB750
KF700 Series Owner’s Manual
T A B L E     O F            C O N T E N T S
Section 1    Read This First .................................................................................................................................................ii
             1.1           Safety Precautions ..............................................................................................................................ii
             1.2           General Precautions...........................................................................................................................ii
             1.3           Important Information for Professional Riggers ......................................................................ii

Section 2    Unpacking .......................................................................................................................................................iii
             2.1           Shipping Damage..............................................................................................................................iii
             2.2           Returning Products to EAW............................................................................................................iii
Section 3    Quick Start .......................................................................................................................................................iv
             3.1           Important Safety and Rigging Information ..............................................................................iv
             3.2           Audio Signal Connections ..............................................................................................................iv
Section 4    Description ......................................................................................................................................................1
             4.1           Overview................................................................................................................................................1
Section 5    Operation ..........................................................................................................................................................2
             5.1           KF700 Series Products.......................................................................................................................2
             5.2           Input Connections..............................................................................................................................3
             5.3           Mechanical Characteristics and Accessories.............................................................................3
             5.4           Electrical Characteristics and Accessories..................................................................................5
             5.5           Array Design .........................................................................................................................................6
             5.6           System Truck-Pack..............................................................................................................................7
Section 6    Maintenance and Service ......................................................................................................................8
             6.1           Warranty ................................................................................................................................................8
             6.2           How to Contact EAW..........................................................................................................................8
             6.3           System Maintenance and Repair Tips..........................................................................................9
                           6.3.1 KF750F..................................................................................................................................9
                           6.3.2 KF750P...............................................................................................................................12
                           6.3.3 KF750P-WP.......................................................................................................................14
                           6.3.4 KF755F ...............................................................................................................................16
                           6.3.5 KF755P...............................................................................................................................19
                           6.3.6 KF755P-WP.......................................................................................................................21
                           6.3.7 SB750F...............................................................................................................................22
                           6.3.8 SB750P...............................................................................................................................23
                           6.3.9 SB750P-WP.......................................................................................................................24
Section 7    Specifications ..............................................................................................................................................25


Congratulations on purchasing the latest sound reinforcement innovation from Eastern Acoustic Works. The KF700
Series is built upon the same fundamental design principles that EAW has upheld since the introduction of the
KF850 Series of loudspeakers in the 1980’s. This new product line draws elements from Virtual Array Technology™
and PhasedPoint Source Technology™, combining these with new patented advances in transducer design and system
integration. The KF700 Series centers on a design approach that optimizes building arrays in the three dimensions of
physical space while also addressing the key acoustical issues that reside in the fourth dimension of time.


                                                                                                                                                                                        i
     Section 1           Read this first
     The terms “Caution,” “Warning” and “Danger” are used throughout this manual to alert
     the reader to important safety considerations. If you have any questions about any
     aspects of these cautions, contact your local dealer, distributor or EAW.

     CAUTION: describes an operating condition or user action that may expose the equipment
     or user to potential damage or danger.

     WARNING: describes an operating condition or user action that will cause damage to the
     equipment or injure the user.

     DANGER: describes an operating condition or user action that will immediately damage
     the equipment or be extremely dangerous or possibly life-threatening to the user.


     1.1          Safety Precautions
     Rigging (flying) must be performed only by a professional rigger. See Section 1.3 for
     information for professional riggers.



     1.2          General Precautions
     WARNING: Some aspects of rigging and other related fields for which EAW manufactures,
     sells or distributes equipment are potentially hazardous. Any person using this equipment
     is personally responsible for his own safety. EAW transactions are made with the assumption
     that the purchaser is a qualified individual or will have only qualified individuals perform
     work with the equipment. EAW will not be liable for any damages arising from the use of
     equipment sold to purchaser.



     1.3          Important Information about Rigging
     Prior to suspending any EAW loudspeaker enclosures overhead, it is essential that the user
     be familiar with the load ratings, rigging techniques and special safety considerations
     appropriate to suspending loudspeakers overhead. The user must determine the load
     requirements, dynamic loading and any other contributing factors affecting the flown
     loudspeakers. The user must determine the proper safety factor for specific applications
     and the required load rating of the connection points. EAW strongly recommends that all
     rigging be done in accordance with and in compliance with all federal, state and local
     regulations, relative to properly securing suspended loads prior to usage. The user
     assumes liability for proper design, installation and use of rigging systems.

     EAW strongly recommends the following rigging system practices:

           1.   Documentation: Thoroughly document the rigging design with detailed drawings
                and parts lists.

           2.   Analysis: Have a licensed structural engineer, registered architect or other qualified
                professional review and approve the rigging design before its implementation.

           3.   Installation: Have a qualified professional rigger install and inspect the rigging
                system.



ii
DANGER: Loudspeakers should be suspended overhead only by persons with a knowl-
edge of the proper hardware and rigging techniques. When stacking or pole-mounting
loudspeakers, be sure they are stabilized and secured from falling over or being accidentally
pushed over. Failure to follow these precautions may result in damage to the equipment,
personal injury, or death.

EAW strongly recommends the following rigging system practices:

      1.   D O C U M E N TAT I O N : Thoroughly document the rigging system design with
           drawings and detailed parts lists.

      2.   PROFESSIONAL REVIEW: Have a licensed structural engineer, registered
           architect or other qualified professional review and officially approve the
           rigging design before its implementation.

      3.   P R O F E S S I O N A L I N S TA L L AT I O N : Have the rigging system installed and
           inspected by a qualified professional rigger.




Section 2           Unpacking

2.1          Shipping Damage
You should have already visually inspected the outside of the shipping carton and noted
any damage on the shipping bill you signed. After unpacking, if you find concealed damage
to the loudspeaker, save the packing materials for the carrier’s inspection, notify the carrier
immediately and file a shipping damage claim.

Although EAW will help in any way possible, it is always the responsibility of the receiving
party to file any shipping damage claim. The carrier will help prepare and file this claim.


2.2          Returning Products to EAW
If this loudspeaker must be returned to EAW, contact EAW for a Return Authorization. Use
the original shipping carton and packing materials. If the shipping carton is damaged,
contact EAW for a new carton. EAW will not be responsible for damage caused by
inadequate packing.




                                                                                                   iii
     Section 3         Quick Start
     NOTE: This section is intended only for qualified professional installers.

     3.1        Important Safety and Rigging Information
     CAUTION: Read all of Section 1, "Read This First", for important general, safety and
     rigging precautions.

     3.2        Audio Signal Connections
     The audio signal connections are via Neutrik NL8 connectors or barrier strips. The two
     NL8s are wired in parallel.

     KF750F - 2 x NL8
       LF1: pins 1 (+/-)
       LF2: pins 2 (+/-)
       MF: pins 3 (+/-)
       HF: pins 4 (+/-)

     KF750P and KF750P-WP - 2 x 4-terminal Barrier Strips
       LF1: bottom strip terminals 1 (-) and 2 (+)
       LF2: bottom strip terminals 3 (-) and 4 (+)
       MF: top strip terminals 1 (-) and 2 (+)
       HF: top strip terminals 3 (-) and 4 (+)

     KF755F - 2 x NL8
       Pins 1 (+/-) not used
       LF: pins 2 (+/-)
       MF: pins 3 (+/-)
       HF: pins 4 (+/-)

     KF755P and KF755P-WP - 1 x 2-terminal + 1 x 4-terminal Barrier Strips:
        LF: bottom strip terminals 1 (-) and 2 (+)
        MF: top strip terminals 1 (-) and 2 (+)
        HF top strip terminals 3 (-) and 4 (+)

     SB750 - 2 x NL8
        Left driver*: pins 1 (+/1)
        Right driver*: pins 2 (+/-)
        Not used: pins 3 (+/-)
        Not used: pins 4 (+/-)
        *Note: Driver position is looking from front.




iv
Section 4         Description
4.1        Overview
Professional loudspeaker systems are designed to optimize spectral, spatial, temporal and
usability performance attributes. Quite often optimization in one area compromises
performance in another. Thus, loudspeaker design is the art of balancing these goals while
minimizing compromise. In order to achieve these goals for the KF700 Series, key develop-
ments allowed for performance enhancement in each area without compromise in others.

4.1.1      SPECTRAL
The KF700 Series are true three-way designs. The goal was to develop systems with greater
low frequency extension and greater overall mid frequency bandwidth. Traditionally these
goals required increased physical size. This was not an option. The KF700 Series loudspeak-
ers were designed as uni-axial enclosures in which all the transducers (woofer, mid-range,
and high frequency) share a common acoustic axis. This permitted using larger horns for a
more consistent coverage pattern over a wider frequency range and provided more available
enclosure volume for deeper bass response while actually reducing physical size. A new,
patented mid frequency phase plug was also developed that allows for improved upper
mid frequency response from a cone transducer through a large format horn.

4.1.2      SPATIAL
The KF700 Series have 35° x 35° coverage patterns. This enhances building arrays and
increases overall system output capability. Conventional phase plugs create beam-width
narrowing in the upper portion of the mid-range. The patented KF700 Series mid
frequency phase plug provides upper mid-range extension without creating this narrowing.
The uni-axial approach minimizes the impact of “apparent apex error”. This occurs when
the separation between physically misaligned transducers changes as the listening point
changes. The KF750 horn designs draw heavily from the SimplePhase™ horns used in the
KF900 Series in order to achieve more seamless coverage between arrayed enclosures.
The low frequency section uses multiple woofers in a dipole configuration to reduce off
axis low frequency energy and thus increase directivity. Research showed that the directivity
of the low frequency section could be smoothly matched to that of the mid frequency section.
This is done by optimizing the ratio between the woofer spacing within the mid frequency
horn and the dimensions of the mid frequency horn mouth. This configuration with its
dimensional ratio is patented.

4.1.3      TEMPORAL
The temporal focus is once again on the mid-range section. A mid frequency cone trans-
ducer tends to provide better tonality and lower distortion than standard compression
drivers, but can smear events in the time domain. This was resolved through a redesign of
the mid-range transducer geometry. The multi-axis approach and its subsequent impact
on apparent apex error also serves to minimize temporal inconsistencies from transducer
to transducer within the enclosure.

4.1.4      USABILITY
Usability goals were satisfied by making the enclosures small. The uni-axial approach
met all the performance goals while allowing for a reduction in overall package size. For
the most consistent coverage pattern through the low to mid frequency crossover region,
the optimal spacing of woofers is smaller than the optimal height of the mid frequency
horn. This allows the woofers to reside within the mid frequency horn, once again
resulting in a small overall package size.

In order to provide simple rigging, the standard KF850 flytrack was chosen. The KF750
utilizes these tracks on the front and back of the enclosure, eliminating the need for putting
fingers between cabinets during array assembly or disassembly. Finally, some internal
parts have been molded of lightweight materials in order to meet the desired enclosure
weight of less than 200 pounds.

                                                                                                 1
            4.1.5      VA4 DEFINED

            The system overview illustrates that the KF700 Series development was driven by enhancing
            the acoustical performance of the loudspeaker systems as it relates to its arrayability. Each
            loudspeaker must therefore array effectively both horizontally and vertically. Consistent
            controlled coverage patterns in three dimensions guarantees predictable array results
            from venue to venue.
            The development goals also dictated that the KF700 Series improve upon the time
            domain behavior, particularly in the vocal region. The ability of a loudspeaker to maintain
            the temporal integrity of the original input signal is easily as important as the frequency
            response in determining the quality of the sound reproduction. Therefore, if harmonics
            lead or lag fundamentals in the reproduction, then the original signal, and perhaps even
            the intent of the performer, will be distorted. The ability to maintain the input signal’s
            temporal integrity while delivering smooth frequency response to a well-defined coverage
            area is ultimately the goal of any loudspeaker.
            Consistently achieving the desired coverage from a loudspeaker array for a given venue
            is governed by performance in the three dimensions of space. Maintaining temporal
            coherence is governed by the fourth dimension of time. Meeting all of these criteria truly
            addresses system performance in four dimensions. This four-dimensional design
            approach is VA4 technology.

            4.1.6      WEATHER-PROTECTED (WP MODELS)
            The KF700P-WP and SB750P-WP models are weather-protected for permanent
            installations. The exterior of the enclosure is laminated with a water-resistant fiberglass
            coating. A 2-layer grille is used to prevent water from entering the front of the enclosure.
            The outside layer is powder-coated perforated steel for physical protection. The rear layer
            is a 1/8 inch thick foam to break up driven water droplets. Behind the grille assembly, a
            layer of 100 x 100 wires per inch stainless steel mesh is affixed to the enclosure to prevent
            any water spray from entering the front of the enclosure. The input panel and back
            doghouse are weather-sealed with rubber strips to prevent water intrusion.



            Section 5         Operation
            5.1        KF700 Series Products

            5.1.1      KF700 MODELS
            Model Name        Description        Primary Application
            KF750F            Three-way          Concert touring
            KF750P            Three-way          Permanent installation
            KF750P-WP         Three-way          Outdoor installation
            KF755F            Three-way          Concert touring downfill
    KF750
            KF755P            Three-way          Permanent installation downfill
            KF755P-WP         Three-way          Outdoor installation downfill
            SB750F            Dual 18-in.        Concert touring subwoofer

            5.1.2      KF700 SERIES PRODUCT WEIGHTS
            System                 Net (lb / kg)          Shipping (lb / kg)
            KF750F                 198 / 90.0             230 / 104.6
            KF750P                 187 / 85.0             201 / 91.4
            KF750P-WP              205 / 93.2             221 / 100.5
            KF755F                 198 / 90.0             232 / 105.5
            KF755P                 180 / 81.8             203 / 92.3
    KF755   KF755P-WP              205 / 93.2             223 / 101.4
            SB750F                 193 / 87.7             202 / 91.8

2
5.1.3      EQUIPMENT SUPPLIED
Each model is shipped individually boxed, two of which fit on one shipping pallet.
Concert touring versions include four cable links, which comprise two fly clips and a
load-rated cable whose length is optimized for creating flown arrays.

5.1.4      ARRAYS
Flying one row of downfill is recommended when more than one row of KF750 loud-
speakers is flown. At least one SB750F subwoofer is recommended for every two KF750s
or KF755s.
For more information on building arrays, please refer to the KF700 Touring Usage Guide
available at ftp://ftp.eaw.com/ProductGuides/KF700TouringUsageGuide.pdf. Most of
the basic array building concepts described in the Touring Usage Guide apply equally to
permanent installations.


5.2        Input ConnectIons
KF750F - 2 x NL8
  LF1: pins 1 (+/-)
  LF2: pins 2 (+/-)
  MF: pins 3 (+/-)
  HF: pins 4 (+/-)

KF750P and KF750P-WP - 2 x 4-terminal Barrier Strips
  LF1: bottom strip terminals 1 (-) and 2 (+)
  LF2: bottom strip terminals 3 (-) and 4 (+)
  MF: top strip terminals 1 (-) and 2 (+)
  HF: top strip terminals 3 (-) and 4 (+)

KF755F - 2 x NL8
  Pins 1 (+/-) not used
  LF: pins 2 (+/-)
  MF: pins 3 (+/-)
  HF: pins 4 (+/-)

KF755P and KF755P-WP - 1 x 2-terminal + 1 x 4-terminal Barrier Strips:
   LF: bottom strip terminals 1 (-) and 2 (+)
   MF: top strip terminals 1 (-) and 2 (+)
   HF top strip terminals 3 (-) and 4 (+)

SB750 - 2 x NL8
   Left driver*: pins 1 (+/1)
   Right driver*: pins 2 (+/-)
   Not used: pins 3 (+/-)
   Not used: pins 4 (+/-)
   *Note: Driver position is looking from front.

Note: All models can be special ordered with AP or EP 4, 6 and 8-conductor connectors.


                                                                                          CENTRAL RAISED PLATFORM WITH TWO MAGNETS
5.3        Mechanical Characteristics and Accessories
5.3.1      CASTER PALL E T S
The KF700 Series includes an optional rugged caster pallet (EAW P/N 255049) designed
for years of reliable service in concert touring applications. Caster pallets can be                               THREE HANDLES

ordered separately in quantities suitable to particular truck packing strategies.           FOUR WHEEL CASTERS



                                                                                                                                     3
                                             KF700 Series caster pallets are constructed of 15 mm Baltic birch plywood with four
                                             mounted wheel-casters. The caster pallet shares a common footprint with KF700F
                                             enclosures. The pallet incorporates a central raised platform that keys into a recess on the
                                             bottom of any enclosure. Magnets on the platform register to steel plates in the recess,
                                             attaching the pallet to the enclosure. The caster pallet has three handles for easy transport
                                             when not connected to a KF700 Series enclosure.


                                             5.3.2      GROUND STACKING
                                             All KF700(F) Series enclosures are equipped with a UHMW (Ultra High Molecular
                                             Weight) plastic stacking pad that keys into the recess in the bottom of another enclosure
                                             when stacked. This pad provides for a more secure stack. EAW recommends that fly hard-
                                             ware be used to provide additional stability. A crossed configuration of the cable links
                                             allows for minimal slack, improving safety and stability. Stacked clusters should
                                             also be strapped together to provide even greater stability.

                                             In many venues, most notably theaters that do not permit flown arrays, inverted KF755s
                                             will be used to provide upfill when stacked. This scenario forces enclosures to touch top-
                                             to-top and, therefore, pad-to-pad. In order to prevent slippage and provide a more secure
                                             stack, EAW has created a stacking plate (EAW P/N 980031)constructed of painted birch
                                             plywood. The stacking plate shares the KF700 Series footprint and provides a central
                                             cutout that locks into pads on both adjoining enclosures.


                                             5.3.3      SUSPENSION HARDWARE
                                             WARNING: See Section 1.3 for information regarding rigging and suspending KF700
                                             Series loudspeakers.
    FOUR EYE BOLTS INSTALLED INTO
    TOP THREADED HANG POINTS
                                             KF700(P and P-WP) Series installation versions utilize internal steel angles to provide a
                                             total of sixteen (16) 3/8”-16 threaded mounting points (four each on the top, bottom
                                             and sides). The enclosures ship with undercut 3/8-16 hardware that sits flush with the
                                             enclosure walls. Replacement of factory-installed hardware with Grade 8 forged shoulder
                                             eyebolts provides appropriate suspension points on an enclosure. The eyebolt manufac-
                                             turer should be consulted for eyebolt working load limit specifications.

                                             CAUTION: All four points on any given side should be utilized when hanging an
                                             enclosure. Failure to use all four points can result in damage to the equipment, personal
                      ARROWS INDICATE
                                             injury, or death.
                      SIDE HANG POINTS
                                             KF700(F) Series touring versions are equipped with two-position industry standard fly-
                                             tracks located in the front and rear corners. The aircraft grade aluminum track is attached
                                             to the Baltic birch enclosure via internal angled steel that runs the full height of the enclo-
                                             sure. This construction is such that the enclosure bears no weight when flown. Each
                                             KF700(F) Series touring version loudspeaker is shipped with four cable links described
                                             above. These can be used for attaching the enclosures to fly bars as well as for attaching
                FLY
         CLIP/CABLE
                                             vertically adjacent enclosures to each other. Enclosures should be connected using all
     INTERCONNECT                            four available points (two front and two back) as depicted in the illustration.
        ASSEMBLIES

                                  REMOVING   Available fly bar manufacturer information can be obtained by contacting EAW.
                                       THE
                                  UNDERCUT
                           3/8-16 HARDWARE
                  WITH A 7/32 ALLEN WRENCH




4
5.4        Electrical Characteristics and Accessories
5.4.1      INPUT SIGNALS: SYSTEM PROCESSING
While KF700 Series processing can be implemented in most commercially available
Digital Signal Processors (DSPs), EAW’s MX8600 and MC8750 DSPs are recommended.
Processor settings for specific array configurations are available in a variety of formats
that can be programmed directly into many DSPs. Formats include text lists of parameters
as well as processor-specific presets. These settings can be found on the EAW web site:
ftp://ftp.eaw.com/Processing/.

Additionally EAW offers the KF700 Wizard also available on the EAW web site at
ftp://ftp.eaw.com/KF700Wizard/. This program requires you to enter critical venue
dimensions and your array configuration. It will then provide you with appropriate signal
processing parameters for that venue and array configuration.

Discrete left / right KF700 arrays that do not incorporate KF755 downfills require four
distinct channels of processing per side: one for each passband of the KF750 and an
additional processing channel for SB750.

Integrating KF755 downfills into left / right arrays requires two additional channels per
side with the low frequency drivers utilizing the same processor output as the KF750
low frequency drivers.

Integrating KF755 into left / right arrays as upfills calls for two additional processing chan-
nels per side for each row of upfill KF755s. They require only mid and high frequency
outputs because ample low frequency energy is provided by the KF750s. Each row
requires individual delay settings to provide a coherent sum of the loudspeaker outputs in
the balcony. Thus two rows of inverted KF755s require four processing outputs per side.

A more efficient though slightly more complex approach exists. The same upfill process-
ing (crossovers, equalization, delay) is used for each upfill row. Thus, two processing
outputs can be used to tune the mid and high frequency sections of all the upfills. These
outputs would feed the bottom row amplifiers directly with appropriate delay set in the
processing. The ouptuts would also feed two signal delays to provide slightly more delay
for the top row of upfills. The signal delays must be carefully chosen to ensure that their
inherent propagation time plus the delay in the processor does not exceed the desired
delay for the top row of upfills.

A large KF700 Series array comprised of SB750 subwoofers, multiple rows of KF750s,
KF755 downfills, and 2 rows of KF755 upfills normally requires 8 to 10 distinct processor
outputs.

5.4.2      POWER AMPLIFIER REQUIREMENTS
All drivers (transducers) in the KF700 Series are rated based upon the results of a power
handling test procedure that is derived from the AES standard, but with a number of
important differences. Stephen Siegel, VP Engineering, outlines the specifics of the EAW
power testing procedure in the EAW Engineering Application Note ”Understanding
Loudspeaker Power Handling and Selecting the Proper Power Amplifier.” This can be
found on the EAW website.

5.4.3      DRIVER SPECIFICATIONS:
Passband                Impedance      Power Handling       Sensitivity
SUB (each driver)       8 ohms         1000 W               98 dB
LF (each driver)        8 ohms         600 W                97 dB *
MF 8 ohms               400 W          109 dB
HF 8 ohms               200 W          116 dB
   * Sensitivity for the KF750 LF section with both drivers operating is 100 dB.


                                                                                                  5
                   The power handling listed for each EAW transducer is a good indicator of the size of the
                   amplifier that will safely drive it to full output under most conditions. Amplifier selection
                   is dependent upon the load presented at the amplifier output. Each doubling of loud-
                   speaker quantity doubles the required amplifier power. In other words, two KF750s LF
                   drivers in parallel require an amplifier channel capable of at least 1200 W into 4 Ohms.
                   Driving four KF750 LF drivers in parallel (2 ohm impedance) can eliminate one amplifier
    11' 8"
                   per rack. While many amplifiers are capable of driving 2 ohm impedances, low frequency
                   performance may be compromised. Amplifier manufacturers should be consulted to
                   determine the power available and distortion present when driving low impedance loads.

                   5.4.4       LOUDSPEAKER CABLE
                   The resistance of the loudspeaker cable should be as low as possible to keep cable power
             90"   losses low and to maintain an acceptable damping factor, particularly for low frequency
                   transducers. The loudspeaker load will significantly affect both of these factors. For a
                   given wire size and length of loudspeaker cable, a greater impedance load will cause a
                   greater power loss and lower damping factor. This fact must be considered when paral-
                   leling multiple loudspeakers on an amplifier channel.
                   The following are minimum recommended wire sizes for loudspeaker cabling.
                   (AWG = American Wire Gauge; MWG = Metric Wire Gauge):
                   Length of Cable               Nominal Load          Cable Wire Gauge
                   0 - 50 ft / 0 - 15 m          8 ohms                14 AWG / 16 MWG
                   50 - 100 ft / 15 - 30 m       8 ohms                12 AWG / 20 MWG
                   100 - 200 ft / 30 - 60 m      8 ohms                10 AWG / 25 MWG
                   Over 200 ft / 60 m            8 ohms                Not recommended
                   0 - 50 ft / 0 - 15 m          4 ohms                12 AWG / 20 MWG
                   50 - 100 ft / 15 - 30 m       4 ohms                10 AWG / 25 MWG
                   Over 100 ft / 30 m            4 ohms                Not recommended
                   0 - 50 ft / 0 - 15 m          2 ohms                10 AWG / 25 MWG
                   Over 50 ft / 15 m             2 ohms                Not recommended



                   5.5         Array Design
                   5.5.1       APPROPRIATE VERTICAL CONFIGURATION
    11' 8"
                   Each KF750 loudspeaker provides well-controlled 35° x 35° coverage. KF755 loudspeakers
                   provide the same coverage, but are vertically asymmetrical. The vertical pattern lies within
                   0° and -30° with maximum output at -12.5°. EASE data is available for KF700 Series
                   loudspeakers to aid designers in creating an appropriate vertical configuration for a fixed
                   installation.

             90"
                   KF700 (F) Series touring versions require evaluating each venue independently to determine
                   the most appropriate configuration for a given performance. The first step in designing an
                   array is designing a column that will vertically address the audience. It is easiest to determine
                   column requirements by examining a cross-section of the venue with appropriate stage
                   location and array trim height. It is easy to see that audience members seated at varying
                   vertical angles are seated in vastly different acoustical environments. These vertical zones
                   require an integrated array column targeted at seamlessly covering the entire venue from
                   a single location. The primary key to delivering uniform response and SPL to the entire
                   venue is appropriate use of different KF700 Series models to address the complex
                   cross-section of most venues. This topic is covered in detail in the KF700 Series Touring
                   Usage Guide.




6
5.5.2      APPROPRIATE HORIZONTAL CONFIGURATION
The horizontal coverage angle required for a venue can be readily determined through
examination of the plan view. Once the required horizontal coverage has been deter-
mined, it is easy to calculate the number of columns required to thoroughly address the
entire venue. All KF700 Series loudspeakers provide 35° of horizontal coverage. Since the
side angles of KF700 enclosures are constructed at 15° angles, horizontal coverage can be
achieved by simply tight packing as many loudspeakers or columns of loudspeakers as              11' 8"
are needed.The resulting 5° overlap in coverage between enclosures is intentional by
design to provide the smoothest SPL transition between enclosures.



5.6        System Truck-Pack
                                                                                                            96"
5.6.1      DIMENSIONAL INFORMATION
KF700 (F) Series touring versions ride on four-wheeled caster pallets with the wider set of
wheels set 23 inches apart so that ramps 30-in wide or wider are easy to negotiate. Two
individuals can quickly and easily load or unload enough loudspeakers to create even the
largest touring arrays. Two offset handles per side provide an inherent tilt when lifting to
facilitate stacking.
KF700F full-range loudspeakers are 31 inches in height. The SB750F subwoofer is 47
inches in height. KF700 Series caster pallets add 4 inches in overall height to any stacked
column. As a result, 3 high columns of KF700 enclosures or 2 high columns of SB750
enclosures can be stacked in most trucks.

CAUTION: Ensure that you do not exceed the load weighting for the vehicle you are using.
This is especially important to consider when stacking enclosures two or more high.

DANGER: To avoid injury or death to personnel or damage to equipment, only two-high
stacks of enclosures should be rolled up or down ramps with up to a 10° slope. Do not
stack enclosures if the slope of the ramp is greater than 10°.

5.6.2      TRUCK PACKING
Smaller straight trucks typically have 90 to 95 inches of available internal width. KF700
Series enclosures can be packed into a 90-inch truck body in tightly packed rows of four.
Enclosures will stack three high on a single caster pallet. SB750 subwoofers will stack two
                                                                                                11' 8"
high in the same footprint. This configuration provides for a maximum of 48 full-range
loudspeakers within only 12 feet of truck space.
Forty-five inch road cases and decking can be used to create a base upon which two-high
stacks of full-range enclosures will fit.
European trailers can also support a 90-inch configuration. In the event that 96-inches of
internal width is available, an alternate configuration will allow for 54 full-range                      100"
enclosures in 12 feet of trailer space. This configuration calls for two alternating rows
along one wall and a single row at 90 degrees along the other wall. It should be noted that
this configuration does not leave much room for protection between rows of enclosures.
In 102-inch wide flat-floor semi-trailers with 100 inches of internal width, KF700 Series
enclosures pack five wide in alternating rows. This allows for 60 enclosures in just 12 feet
of trailer space. This configuration actually occupies 98.25 inches of actual space, so a
small amount of room remains if the trailer width varies slightly.
Regardless of trailer configuration, grilles and flytrack should be prevented from contacting
one another. Enclosures should be secured so that they do not rub up against each other
during transport. Covers or plywood sheets may be used to minimize contact during
transport. KF700 enclosures are protected with a durable finish, however, care taken during
transport will maintain them in superior condition longer .

                                                                                                                  7
    Section 6               Maintenance and Service
    6.1           Warranty
    Eastern Acoustic Works, Inc. (EAW) guarantees its Loudspeaker Systems (excluding active
    electronics) for a period of six years from date of original purchase against malfunction
    due to defects in workmanship and materials. WP (weather-protected) product
    enclosures are warranted for five years. EAW Professional Active Electronics products are
    guaranteed for a period of three years from the date of original purchase against malfunction
    due to defects in workmanship and materials. During the warranty period, EAW will
    remedy all such defects without charge for parts or labor upon the return of the unit
    together with its original sales receipt or other proof of purchase to EAW or to an
    Authorized EAW Service Facility.

    This warranty does not extend to damage resulting from improper installation, misuse,
    neglect or abuse. Defects in, or damage to, the exterior appearance of EAW products are
    specifically excluded from this warranty. In no event shall EAW be liable for incidental or
    consequential damages. Repairs and/or modifications by other than EAW or its
    Authorized Service Facilities automatically voids this warranty. This warranty gives you
    specific legal rights and you may also have other rights which vary from state to state.

    6.2           How to contact EAW
    For warranty information, repair service, accessories, technical assistance, printed literature,
    CD ROM information, additional performance, or other specifications, contact EAW or
    visit our web site at www.eaw.com.

       S E R V I C E L I T E R AT U R E             S E R V I C E L I T E R AT U R E
       Eastern Acoustic Works                       Eastern Acoustic Works
       EAW Service Department                       EAW Literature Department
       One Main Street                              One Main Street
       Whitinsville, MA 01588 USA                   Whitinsville, MA 01588 USA
       Tel 800-992-5013 (USA only)                  Tel 800-992-5013 (USA only)
       Tel 508-234-6158                             Tel 508-234-6158
       Tel 508-234-4295 ext 133 or ext 164          Fax 508-234-8251
       Fax 508-234-3776                             email service@eaw.com
       email service@eaw.com




8
6.3           System Maintenance and Repair Tips

OBJECTIVE:
This section illustrates the steps to follow when removing the KF700F Series loudspeaker
components. To replace the components and reassemble the loudspeaker, reverse these
instructions.

TA B L E O F C O N T E N T S :
      Section 6.3.1         KF750F .............................9
      Section 6.3.2         KF750P ...........................12
      Section 6.3.3         KF750P-WP ....................14
      Section 6.3.4         KF755F ...........................16
      Section 6.3.5         KF755P ...........................19
      Section 6.3.6         KF755P-WP ....................21
      Section 6.3.7         SB750F ...........................22
      Section 6.3.8         SB750P ...........................23
      Section 6.3.9         SB750P-WP ....................24

CAUTION: Maintenance should only be done by an experienced technician. Improper
maintenance may cause serious injury, damage to the loudspeaker and/or void the warranty.


6.3.1         KF750F LOUDSPEAKER

PROCEDURE:
6.3.1.1  Accessing the Woofer Chamber:
Remove the grille and grille foam.
•     Remove the 4 screws & washers from the center of the grille with a 5/32 allen
      wrench. These attach the internal high frequency horn to the grille.
•     Remove the 18 grille mounting screws and washers from the outside edge of the
      grille with a 5/32 allen wrench. During removal, hold the grille and grille foam in
      place. This prevents the grille foam from tearing. Do not discard the mounting
      hardware.

                                                                    GRILLE FOAM 712028
                                                                          GRILLE 702381-0002



                                                                              22X HORN & GRILLE SCREWS
                                                                               1/4-20 X 1 LG BLACK 104023
                                                                             & WASHERS 1/4 NYLON BLACK
                                                                                 105065 (ONLY 10 SHOWN)




                                                  EAW




                                                                                                            9
     6.3.1.2     Removing the High Frequency Horn Assembly:
     This assembly is heavy. It is made up of a metal bracket, a horn and a driver with 2 elec-
     trical leads. The leads must be disconnected carefully.
     •      While supporting the assembly, remove the mounting screws that hold the assembly
            into the cabinet with a 3/16 allen wrench. These 4 socket head screws, lock washers
            and flat washers are indicated by the arrows. Do not discard the mounting hardware.
     •      Disconnect the red lead + from the red pushbutton terminal and the black lead –
            from the black pushbutton terminal. The terminals are on the back of the driver.
     •      Lift the horn assembly away from the cabinet.

           NOTE: The high frequency diaphragm is not self aligning. Its replacement requires a
           signal/tone generator for alignment. Please contact our factory for further details.




         KF750
         HORN
         ASSEMBLY

                                                                                  DISCONNECT RED LEAD +
                                                                                  FROM RED PUSHBUTTON
                                                                                     TERMINAL AND BLACK
                                                                                       LEAD – FROM BLACK
                                                                                   PUSHBUTTON TERMINAL
                                                                                        ON REAR OF DRIVER




     6.3.1.3 Removing the Two Woofers:
     The woofer to be removed should rest in the lower half of the cabinet (as shown).
     •      Remove the 4 woofer mounting screws with a 3/16 allen head wrench. Do not
            discard the mounting hardware.
     •      Lift the woofer enough to access and disconnect the two electrical leads. The top
            woofer’s red pushbutton terminal has a blue lead+, and its blue pushbutton termi-
            nal has a green lead–. The bottom woofer ‘s red pushbutton terminal has a blue
            lead +, and its blue pushbutton terminal has an orange lead –.



     TOP 12" WOOFER 804091
     DISCONNECT BLUE LEAD + FROM
     RED PUSHBUTTON TERMINAL AND
     GREEN LEAD – FROM BLUE
     PUSHBUTTON TERMINAL




     4X SCREWS 1/4-20 SOCKET HEAD
     CAP 102017 USE 3/16 ALLEN


     BOTTOM 12" WOOFER 804091
     DISCONNECT BLUE LEAD + FROM
     RED PUSHBUTTON TERMINAL AND
     ORANGE LEAD – FROM
     BLUE PUSHBUTTON TERMINAL




10
•   Lift the woofer from the cabinet.
•   Flip the cabinet and repeat the above steps for the second woofer.

6.3.1.4    Removing the Doghouse:
To access the mid frequency driver/phase plug assembly, remove the doghouse.
•   Remove the 10 phillips head screws that attach the doghouse to the loudspeaker
    cabinet (5 per side, indicated by the arrows). Do not discard hardware.




                     KF750F
                     DOGHOUSE
                     508001




After removing the 10 mounting screws, carefully move the doghouse away from the
cabinet. The internal electrical leads that connect the components are short in length
and must be handled carefully.
•   Disconnect the two electrical connectors (indicated by the arrows).
•   Remove the yellow lead + from the red pushbutton terminal on the phase plug
    assembly.
•   Remove the violet lead– from the black pushbutton terminal on the phase plug
    assembly.




                              4-




                                   2-




                         4-




                         3-




                                                        KF750 PHASE PLUG ASSEMBLY 251147



                                                                                           11
     6.3.1.5   Removing the Phase Plug Assembly:
     • Remove the 4 phillips head screws, lock washers and flat washers. This assembly
         is heavy and must be supported during removal. Do not discard the mounting
         hardware.


                                       KF750F CABINET WITH
                                       DOG HOUSE REMOVED

                   KF750 PHASE PLUG
                   ASSEMBLY 251147


         4X WASHER 1/4
         FLAT 105007




      4X WASHER
      1/4 LOCK
      105008




                                   4X SCREW 1/4-20 X 3/4 LG
                                   PHILIPS PAN HEAD 102039




     6.3.1.6 Disassembling the Phase Plug Assembly :
     • Remove the 4 hex head screws, lock washers and flat washers. Do not discard the
         mounting hardware.
     •      Remove the yellow lead + from the red pushbutton terminal on the cone driver.
     •      Remove the black lead– from the black pushbutton terminal on the cone driver.

                                                 ASSEMBLY/SFP      10" CONE            THROAT MODE
                                                 MID               DRIVER              BARRIER 801014


            4X WASHER          4X WASHER
            1/4 LOCK           1/4 FLAT
            105008             105007




                                                                                             BRACKET
                                                                                    10" MID PHASE PLUG 801015
                                                                                    & HOUSING 801019

                                                                 DISCONNECT YELLOW LEAD +
                         4X SCREW HEX                            FROM RED PUSHBUTTON
                                              NOTE ORIENTATION
                         HEAD 1/4-20 X                           TERMINAL AND BLACK LEAD –
                                              OF MID COVER AND
                         6-3/4 LG 102238                         FROM BLACK PUSHBUTTON
                                              10" CONE DRIVER
                                                                 TERMINAL ON CONE DRIVER


     6.3.1.7    Reinstallation of KF750F components:
     To reinstall any of the components listed in this section, reverse the appropriate disas-
     sembly procedure.



     6.3.2          KF750P LOUDSPEAKER

     PROCEDURE:
     6.3.2.1  Accessing the Woofer Chamber:
     Remove the grille and grille foam.

12
•   Remove the 4 screws and washers from the center of the grille with a 5/32 allen
    wrench. These attach the front of the internal high frequency horn to the grille.
•   Remove the16 grille mounting screws and washers from the outside edge with
    a phillips head screwdriver. During removal, hold the grille and grille foam in place.
    This prevents the grille foam from tearing. Do not discard the mounting hardware.

                                                                  GRILLE FOAM 712028

                                                                         GRILLE 702381-0002




                                                                           4X HORN MOUNTING
                                                                      GRILLE SCREWS 1/4-20 X 1
                                                                      LG BLACK 104023 USE 5/32
                                                                          ALLEN HEAD WRENCH
                                                                               (ONLY 2 SHOWN)


                                                                            4X GRILLE WASHERS
                                                                       1/4 NYLON BLACK 105065
                                                                              (ONLY 2 SHOWN)




                                                                            16X GRILLE SCREWS
                                                                            #8 X 5/8"LG PHILLPS
                                                                            HEAD BLACK 102102
                                               EAW                             (ONLY 7 SHOWN)




6.3.2.2    Removing the High Frequency Horn Assembly:
Refer to Section 6.3.1.2.

6.3.2.3    Removing the Two Woofers:
Refer to Section 6.3.1.3.

6.3.2.4    Disconnecting the Doghouse:
To access the mid frequency driver/phase plug assembly, disconnect the doghouse.
•   Remove the 22 phillips head screws that attach the doghouse to the cabinet. The 18
    side mounting screws (9 per side, indicated by the arrows) are 5/8”long, and the 4
    back mounting screws are 1-1/4”long. Do not discard the
    mounting hardware.




                       4X BACK DOGHOUSE
                       MOUNTING SCREWS
                       10-24 X 1-1/4 LG
                       PHILLIPS HEAD
                       102053




                       ARROWS INDICATE THE 9
                       DOGHOUSE MOUNTING
                       SCREWS 10-24 PHILLIPS
                       HEAD X 5/8 LG 102057
                       THAT MUST BE REMOVED
                       FROM EACH SIDE OF THE
                       CABINET




                                                                                                  13
     After removing the 22 mounting screws, carefully move the doghouse to access the
     phase plug assembly. The internal electrical wires that connect the components are
     short in length and must be handled carefully.
     •   Remove the yellow lead + from the red pushbutton terminal on the phase plug
         assembly.
     •   Remove the violet lead – from the black pushbutton terminal on the phase plug
         assembly




         KF750 PHASE PLUG
         ASSEMBLY 251147




     6.3.2.5     Removing the Phase Plug Assembly:
     Refer to Section 6.3.1.5.

     6.3.2.6     Disassembling the Phase Plug Assembly:
     Refer to Section 6.3.1.6.

     6.3.2.7    Reinstallation of KF750P components:
     To reinstall any of the components mentioned in this section, reverse the appropriate
     disassembly instructions.



     6.3.3      KF750P-WP LOUDSPEAKER

     PROCEDURE:
     6.3.3.1  Accessing the Woofer Chamber:
     Remove the grille, grille foam and wire mesh.
     •   Remove the 4 central screws from the grille with a 5/32 allen wrench. These attach
         the front of the internal high frequency horn to the grille.
     •   Remove the16 grille mounting screws and washers from the outside edge with a
         phillips head screwdriver. During removal, hold the grille, grille foam and wire
         mesh in place. This prevents the grille foam from tearing. Do not discard the
         mounting hardware.




14
                                                                   WIRE MESH STAINLESS STEEL


                                                                          GRILLE 702381-0002




                                                                   4X HORN MOUNTING GRILLE
                                                                   SCREWS 1/4-20 X 1 LG BLACK
                                                                  104023 (ONLY 2 SHOWN) USE
                                                                    5/32 ALLEN HEAD WRENCH



                                                                  4X WASHERS 1/4 NYLON BLACK
                                                                       105065 (ONLY 2 SHOWN)


                                                                 16X GRILLE SCREWS #8 X 5/8"LG
                                                                   PHILLPS HEAD BLACK 102102
                                                                              (ONLY 7 SHOWN)

                                                                          GRILLE FOAM 712028




                                    EAW




Care must be taken when handling the wire mesh; it can easily cut into the skin.
•   The wire mesh is held in place by double sided black foam tape.
•   Separate the wire mesh from the cabinet along the bottom seam.
•   Keeping a tight roll, roll the mesh upward to the top of the cabinet.
•   Leave the rolled mesh fastened to the cabinet by the top strip of tape. This will aid
    re-assembly.



                                                                      ROLLED STAINLESS STEEL
                                                                        WIRE MESH TO REMAIN
                                                                           TAPED ALONG TOP
                                                                                 OF CABINET




                                                                                                 15
     6.3.3.2    Removing the High Frequency Horn Assembly:
     Refer to Section 6.3.1.2.

     6.3.3.3    Removing the Two Woofers:
     Refer to Section 6.3.1.3.

     6.3.3.4    Disconnecting the Doghouse:
     Refer to Section 6.3.2.4.

     6.3.3.5    Removing the Phase Plug Assembly:
     Refer to Section 6.3.1.5.

     6.3.3.6    Disassembling the Phase Plug Assembly:
     Refer to Section 6.3.1.6.

     6.3.3.7    Reinstallation of KF750P-WP Components:
     To reinstall any of the components mentioned in this section, reverse the appropriate
     disassembly instruction.



     6.3.4     KF755F LOUDSPEAKER

     PROCEDURE:
     6.3.4.1  Accessing the Woofer Chamber:
     Remove the grille and grille foam.
     •   Remove the 18 grille mounting screws and washers with a 5/32 allen wrench.
         During removal, hold the grille and grille foam in place. This prevents the grille
         foam from tearing. Do not discard the mounting hardware.


                                                     GRILLE FOAM 712028

                                                             GRILLE 702359-0002




                                                               18X GRILLE SCREWS 1/4-20 X 1 LG
                                                                5/32 ALLEN HEAD BLACK 104023
                                                                             (ONLY 8 SHOWN)

                                                                18X GRILLE WASHERS 1/4 NYLON
                                                                 BLACK 105065 (ONLY 8 SHOWN)

                                 EAW




16
6.3.4.2    Removing the High Frequency Horn Assembly:
This assembly is heavy, made up of a horn, a metal bracket, 2 metal standoffs, and a
driver with two electrical leads. The leads must be disconnected carefully.
•      Remove the phillips head screw and lock washer that attaches the top and bottom
       supports to the cabinet.
•      While supporting the assembly, remove the bracket mounting screws with a 3/16
       allen wrench. These 4 socket head screws, lock washers and flat washers are indi-
       cated by the arrows. Do not discard the mounting hardware.
•      Disconnect the red lead + from the driver’s red pushbutton connector.
•      Disconnect the black lead – from the black pushbutton connector on the back of
       the driver.
•      Lift the horn assembly away from the cabinet.
                                                TOP HORN SUPPORT 606141 & 606142




                                                                          2X #10 X 3/4 LG PHILLIPS
                                                                           HEAD SCREW 102039 &
                                                                         #10 LOCK WASHER 205007

                                                                          HORN ASSEMBLY 251121




                                                                          BOTTOM HORN SUPPORT
                                                                                606127 & 606128




6.3.4.3  Removing the Woofer:
The woofer should rest in the lower half of the cabinet (as shown).
•      Remove the 4 woofer mounting screws with a 3/16 allen head wrench. Do not
       discard the mounting hardware.
•      Lift the woofer enough to remove the blue lead + from the red pushbutton
       terminal and the orange lead – from the blue pushbutton terminal.
•      Lift the woofer from the cabinet.




    DISCONNECT BLUE
    LEAD + FROM RED
    PUSHBUTTON
    DISCONNECT AND
    ORANGE LEAD – FROM
    BLUE PUSHBUTTON
                                                                               4X 1/4-20 SOCKET
                                                                         HEAD CAP SCREW 102017
                                                                         USE 3/16 ALLEN WRENCH




                                                                               12" WOOFER 804091




                                                                                                     17
     6.3.4.4    Removing the Doghouse:
     To access the mid frequency driver/phase plug assembly, remove the doghouse.
     •    Remove the 10 phillips head screws that attach the doghouse to the back of the
          loudspeaker cabinet (5 per side, indicated by the arrows).




          KF755F
          DOGHOUSE
          508001




     After removing the 10 mounting screws, carefully move the doghouse away from the
     cabinet. The internal electrical leads that connect the components must be handled
     carefully.
     •    Disconnect the two electrical connectors indicated below by the arrows.
     •    Remove the 2 leads from the phase plug assembly, the yellow lead + from the red
          pushbutton terminal, and the violet lead – from the black pushbutton terminal.




         KF750 PHASE PLUG
         ASSEMBLY 251147




                                           4-              1-
                                                 1+

                                      4+                        2+

                                 3-
                                                 3+

                                                           2-




                                      4-         1+
                                                                1-

                                 4+                        2+


                                                3+
                                      3-              2-




     6.3.4.5   Removing the Phase Plug Assembly:
     • Remove the 4 phillips head screws, lock washers and flat washers. The assembly is
         heavy and must be supported during removal. Do not discard the mounting hard-
         ware.


18
                                                     KF755F CABINET WITH
                                                     DOG HOUSE REMOVED
                                KF750 PHASE PLUG
                                ASSEMBLY 251147
          4X WASHER 1/4
          FLAT 105007



    4X WASHER 1/4
    LOCK 105008




                          4X SCREW 1/4-20 X 3/4 LG
                          PHILIPS PAN HEAD 102039




6.3.4.6    Disassembling the Phase Plug Assembly:
Refer to Section 6.3.1.6.

6.3.4.7   Reinstallation of KF750F Components:
To reinstall any of the components listed in this section, reverse the appropriate
disassembly procedure.


6.3.5       KF755P LOUDSPEAKER

PROCEDURE:
6.3.5.1  Accessing the Woofer Chamber:
Remove the grille and grille foam.
•   Remove the 16 phillips head screws that hold the grille and grille foam to the
    cabinet. During removal, hold the grille and grille foam in place. This prevents the
    grille foam from tearing. Do not discard the grille screws.




                                                                                   GRILLE FOAM 712028




                                                                                   GRILLE 702381-0002




                                                                           16X GRILLE SCREWS #8 X 1"LG
                                                                           PHILLPS HEAD BLACK 102102
                                                                                      (ONLY 7 SHOWN)




                                           EAW



                                                                                                         19
     6.3.5.2    Removing the High Frequency Horn Assembly:
     Refer to Section 6.3.4.2.

     6.3.5.3    Removing the Woofer:
     Refer to Section 6.3.4.3

     6.3.5.4    Disconnecting the Doghouse:
     To access the mid frequency driver/phase plug assembly, remove the doghouse.
     •   Remove the 22 phillips head screws that attach the doghouse to the loudspeaker
         cabinet. The 18 side mounting screws (9 per side) are 5/8”long, and the 4 back
         mounting screws are 1-1/4”long.


           4X BACK DOGHOUSE
           MOUNTING SCREWS
           10-24 X 1-1/4 LG
           PHILLIPS HEAD
           102053




           ARROWS INDICATE THE 9
           DOGHOUSE MOUNTING
           SCREWS 10-24 PHILLIPS
           HEAD X 5/8 LG 102057
           THAT MUST BE REMOVED
           FROM EACH SIDE OF THE
           CABINET




     After removing the 22 mounting screws, carefully move the doghouse to access the
     phase plug assembly. The internal electrical leads that connect the components are
     short in length and must be handled carefully.
     •   Remove the red lead + from the phase plug’s red pushbutton terminal.
     •   Remove the violet lead– from the assembly’s black pushbutton terminal.




          KF750 PHASE PLUG
          ASSEMBLY 251147




     6.3.5.5    Removing the Phase Plug Assembly:
     Refer to Section 6.3.4.5.

     6.3.5.6    Disassembling the Phase Plug Assembly:
     Refer to Section 6.3.1.6.
20
6.3.5.7    Reinstallation of KF755P Components:
To reinstall any components mentioned in this section, reverse the appropriate disas-
sembly instruction.


6.3.6     KF755P-WP LOUDSPEAKER

PROCEDURE:
6.3.6.1  Accessing the Woofer Chamber:
Remove the grille, grille foam and wire mesh.
•   Remove the 16 grille mounting screws with a phillips head screwdriver. During
    removal, hold the grille, grille foam and wire mesh in place. This prevents the grille
    foam from tearing. Do not discard the grille screws and washers.
•   Rollong up the Wire Mesh:
    Refer to Section 6.3.3.1.
                                                                 WIRE MESH STAINLESS STEEL




                                                                       GRILLE 702381-0002




                                                              16X GRILLE SCREWS #8 X 5/8"LG
                                                                PHILLPS HEAD BLACK 102102
                                                                           (ONLY 7 SHOWN)

                                                                       GRILLE FOAM 712028




                                  EAW



6.3.6.2    Removing the High Frequency Horn Assembly:
Refer to Section 6.3.4.2.

6.3.6.3    Removing the Woofers:
Refer to Section 6.3.4.3.

6.3.6.4    Removing the Doghouse:
Refer to Section 6.3.4.4.

6.3.6.5    Removing the Phase Plug Assembly:
Refer to Section 6.3.4.5.

6.3.6.6    Disassembling the Phase Plug Assembly:
Refer to Section 6.3.1.6.

6.3.6.7    Reinstallation of KF755P-WP Components:
To reinstall any of the components mentioned in this section, reverse the appropriate
disassembly instruction.

                                                                                              21
     6.3.7       SB750F LOUDSPEAKER

     PROCEDURE:
     6.3.7.1  Accessing the Woofer Chamber:
     Remove the grille/grille foam assembly.
     •   During removal, hold the grille/grille foam assembly in place. This prevents the
         grille foam from tearing.
     •   Remove the 18 grille mounting screws and washers with a 5/32 allen wrench.
         Do not discard the hardware.




                                                                     GRILLE 702432-0002
                                                                  & GRILLE FOAM 712038
                                                                       GLUED TOGETHER




                                                         18X GRILLE SCREWS 1/4-20 X 1 LG
                                                          BLACK 104023 (ONLY 8 SHOWN)
                                                          USE 5/32 ALLEN HEAD WRENCH




                                                         18X GRILLE WASHERS 1/4 NYLON
                                 EAW                      BLACK 105065 (ONLY 8 SHOWN)




     6.3.7.2 Removing the Two Woofers:
     • Lay the cabinet on its back before removing the woofers.




     DISCONNECT BLUE LEAD +                                            2X 18" WOOFER 804104
     FROM RED PUSHBUTTON
     TERMINAL AND BLACK
     LEAD- FROM BLACK
     PUSHBUTTON TERMINAL
     ON WOOFER




                                                                                  8X SCREWS
                                                                                PER WOOFER
                                                                             1/4-20 X 1-1/2 LG
                                                                               SOCKET HEAD
     2X GASKET 555124                                                             CAP102021


                                                                                 8X WASHERS
                                                                                 PER WOOFER
                                                                             1/4 LOCK 105008




22
•   Remove the 8 woofer mounting screws with a 3/16 allen wrench. Do not discard
    the mounting hardware.
•   Lift the woofer from the cabinet only enough to access and disconnect the blue
    lead+ from the red pushbutton terminal, and the black lead– from the black push-
    button terminal. These terminals are located behind the woofer.
•   Remove the woofer and repeat the above steps for the second woofer.


6.3.7.3    Reinstallation of the SB750F Components:
To reinstall any of the components mentioned in this section, reverse the appropriate
disassembly instruction.


6. 3.8     SB750P LOUDSPEAKER

PROCEDURE:
6.3.8.1    Accessing the Woofer Chamber:
Remove the grille/grille foam assembly. Be careful handling the wire mesh; it can easily
cut into the skin.
•   During removal, hold the grille/grille foam assembly in place. This prevents the
    grille foam from tearing.
•   Remove the 16 grille mounting screws with a phillips head screwdriver. Do not
    discard the mounting hardware.




                                                            16X GRILLE SCREWS #8 X 5/8"LG
                                                              PHILLPS HEAD BLACK 102102
                                                                        (ONLY 10 SHOWN)




                                                                      GRILLE 702432-0002
                                                                   & GRILLE FOAM 712038
                                                                        GLUED TOGETHER




                                EAW




6.3.8.2    Removing the Two Woofers:
Refer to Section 6.3.7.2.

6.3.8.3    Reinstallation of the SB750P Components:
To reinstall any of the components mentioned in this section, reverse the appropriate
disassembly instruction.

                                                                                            23
     6.3.9     SB750P-WP LOUDSPEAKER

     PROCEDURE:
     6.3.9.1     Accessing the Woofer Chamber:
     Remove the grille, grille foam and wire mesh. Be careful handling the wire mesh; it can
     easily cut into the skin.
     •   During removal, hold the grille, grille foam and wire mesh in place. This prevents
         the grille foam from tearing.
     •   Remove the16 grille mounting screws with a phillips head screwdriver. Do not dis-
         card the mounting hardware.
     •   Rolling up the Wire Mesh: Refer to Section 6.3.6.1.




                                                               GRILLE MESH STAINLESS STEEL




                                                                 GRILLE 702432-0002 & GRILLE
                                                               FOAM 712038 GLUED TOGETHER




                                                                    16X GRILLE SCREWS #8 X 5/8"LG
                                                                      PHILLPS HEAD BLACK 102102
                                                                                (ONLY 10 SHOWN)




                                     EAW




     6.3.9.2    Removing the Two Woofers:
     Refer to Section 6.3.7.2.

     6.3.9.3    Reinstallation of the SB750P-WP Components:
     To reinstall any of the components mentioned in this section, reverse the appropriate
     disassembly instruction.




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Section 7       Specifications
MODEL                             KF750                                        KF755

Configuration                     3-way, full range                            3-way, full range
Powering                          triamplified (MX8600 processor)              triamplified (MX8600 processor)
Drivers:
  LF                              (2) 12 in cones, dipolar array, vented       12 in cone, vented
  MF                              10 in cone, radial phase plug, horn-loaded   10 in cone, radial phase plug, horn-loaded
  HF                              2 in exit / 100 mm voice coil                2 in exit / 100 mm voice coil
                                  compression driver on CD hornQ horn          compression driver on asymmetrical high
Enclosure Shape                   trapezoidal                                  trapezoidal
Enclosure Materials               Baltic birch plywood                         Baltic birch plywood
Finish                            black, catalyzed polyurethane                black, catalyzed polyurethane
Connectors                        (2) Neutrik NL8 Speakon                      (2) Neutrik NL8 Speakon
Suspension Hardware               (8) 4-position fly tracks                    (8) 4-position fly tracks
                                  (4 each front and rear)                      (4 each front and rear)
Grille                            powder-coated perforated steel               powder-coated perforated steel
                                  foam-backed                                  foam-backed
Dimensions:
  Height                          31.0 in / 787 mm                             31.0 in / 787 mm
  Width (Front)                   27.0 in / 686 mm                             27.0 in / 686 mm
  Width (Rear)                    8.8 in / 233 mm                              8.8 in / 233 mm
  Depth                           34.0 in / 864 mm                             34.0 in / 864 mm
Trapezoid Angle                   15 degrees per side                          15 degrees per side
Weight                            See page 2
Companion Systems:
  Sub Bass                        SB750/SB850R / SB1000e / KF940               SB750/SB850 / SB1000e / KF940
  Full Range                      KF755F downfill                              KF750F full-range
Accessories:
  KF700 Series Caster Pallet      P/N 255049                                   P/N 255049
  Stack Pallet                    P/N 151047                                   P/N 151047
  Cable Links                     P/N 179064                                   P/N 179064
  Shoulder Eyebolts               P/N 104013                                   P/N 104013
Frequency Response:
  ±3 dB                           48 Hz to 18 kHz                              48 Hz to 18 kHz
  -10 dB                          30 Hz                                        30 Hz
Recommended High-Pass Filter
  (24 dB/Octave)                  35 Hz                                        35 Hz
Axial Sensitivity (SPL @ 1 W/1 m):
  LF                               103 dB                                      99 dB
  MF                               109 dB                                      108 dB
  HF                               116 dB                                      115 dB
Impedance:
  LF                              (2) 8 Ω                                      8Ω
  MF                              8Ω                                           8Ω
  HF                              8Ω                                           8Ω
Power Handling:
  LF                              1200 W                                       600 W
  MF                              400 W                                        400 W
  HF                              200 W                                        200 W
Calculated Maximum Output (SPL @ 1 m, Peak/Long Term):
  LF                           139 / 133 dB                                    133 / 127 dB
  MF                           141 / 135 dB                                    140 / 134 dB
  HF                           145 / 139 dB                                    144 / 138 dB
Beamwidth (-6 dB)              35° H x 35° V                                   35° H x 35° V (0° to -35°)

                                                                                                                       25
                                               The Laws of Physics | The Art of Listening

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