YAMAHA O2R FAQ by jackl17

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									YAMAHA O2R FAQ

 • General
 • Input / output
 • Routing / bus out / direct out
 • Digital I/O, Digital connection
 • Memory / Librarian
 • EQ / pan
 • Fader
 • Dynamics / Effects
 • Automix
 • User interface
 • Sonic Quality

    How many recorders can be hooked up?

     There are four rear-panel slots. When four single-size cards such as the CD8-AT, CD8-TD, and CD8-Y
are installed, 02R is essentially a 32 digital input mixer. When the AES/EBU cards are installed, however,
02R becomes a 16 digital input mixer. This is because the AES/EBU cards (CD8-AE) require two slots

    How does reliability compare to analog mixers?

     It is difficult to compare digital and analog mixers. However, if we compare the 02R with an analog
mixer that has the same specifications as the 02R (not that there is one for the price), then simply
because the 02R achieves the same thing with far fewer parts, it must, by the law of averages, be more

    Does the 02R offer simple operation?

     Yes. Once the input level has been set using the GAIN control and PAD switch, mix operation simply
involves using the faders and ON/OFF switches, essentially the same as that of an analog mixer. EQ and
PAN (and AUX sends and Routing of each channel) are controlled using the dedicated knobs and switches
of the virtual controller, and graphically confirmed in the LCD display. Scene memory makes it possible to
recall exact settings at a later time or a different location.

    How powerful is the CPU?

    The 02R is driven by twin RISC CPUs providing powerful system control of the dynamic automation.

    How many mic pre-amps are there, and for which channels?

     All 16 Mic/line input channels are balanced TRS phone jacks and have mic pre-amps, and the first 8
additionally provide a choice of XLR input or phone jack input, and also supply phantom power.

    Out of 16 mic/line inputs, are only 8 XLR?

    Yes, but all 16 line input channels are balanced. Since the 8 channels with XLR each have phantom
power that is independently switchable on/off, they are especially convenient for condenser microphones.
TRS phone inputs are also provided for these 8 channels.

    Is the phantom power independently switchable on/off ?


    How many detents do the input gain knobs have?

    Since these settings are completely in the analog realm, they cannot be memorized. However, the
input gain knobs have 31 detents, so they can be set manually in a precise and repeatable way.

    What signal levels does the AD/DA card support?

     The AD/DA card (CD8-AD) features +4 dB/-10 dB switches for each input and output. So any analog
multitrack recorder can be hooked up. Furthermore, the +4 dB setting means that 02R can easily be
interfaced with live-sound mixers, which generally operate at +4 dB.

    Are insert points provided?

    Yes. Mic/Line inputs CH1-CH8 provide insert I/O in the form of TRS phone jacks, located after the
Head Amp and before the A/D converter, at a signal level of +0 dBm. This means the customer can still
use his own dynamics processors, although, each 02R input already has dynamics processors built-in.

    Does the Tape input have insert I/O?

    No. However, the built-in dynamics processors are available.
    Do the inputs have a HPF and LPF?

     Yes, the lowest of the four parametric EQ bands for each input and Stereo Out can be used for HPF
(as well as for full sweepable and shelving EQ), and the highest band can be used for LPF.

    How much input delay can be set?

    Up to approximately 60 ms (2,600 samples) can be set independently for each channel (54.2 ms @
48 kHz sampling rate and 59.0 ms @ 44.1 kHz).

    How many AUX's?

     There are 8 auxiliary sends. AUX7 and AUX8 feed the internal effects. AUX1 through AUX6 are for use
with external devices.

    Is there a Stereo Send?

     Odd and Even auxiliaries can be paired AUX 1/2, 3/4, 5/6 except for AUX7 and AUX8, which are for
internal effects. AUX5 and AUX6 can also be routed to C-R and Studio Out for CUE mix, with the internal
effects as effects monitor.

    What is the maximum I/O level?

    For balanced outputs (STEREO OUT, STUDIO MONITOR OUT, and C-R MONITOR OUT), the maximum
output level is +24 dBm (nominal +4 dBm). For unbalanced outputs (RCA/phono STEREO OUT), it is +10
dBV (nominal -10 dBV). For the AUX SENDs, it is +20dB (nominal +4dB). While for the INSERT I/O and
other unbalanced outputs, it is +20dB (nominal 0dB).

    How do you read the meter level?

     Since the 02R can be connected directly to a digital recorder, 0 dB on each meter corresponds to
digital clipping level. -20 dB at the Stereo meter corresponds to +4 dBm for the Stereo and C-R analog

    Is there a Stereo Pair function that allows any two channels to be paired?

    Yes, there is a Pair function that allows adjacent odd and even channels to be paired. For example,
channels 1/2 or 3/4 can be paired, but not 2/3. Paired channels can also be grouped.
Routing/Bus Out/Direct Out

    How many buses can be used for recording simultaneously?

    Eight buses can be used. For example, with two Tascam DA-88s connected to an 02R and a signal
routed to Bus1, that signal goes to Track1 and Track9. The REC Track on/off controls on the DA-88s are
used to determine which track actually records the signal.

    How about direct out?

     There are 16 direct outputs, one for each MIC/LINE input (1-16). Therefore, 16-track direct recording
is possible for live Application Guide.

    What happens when a channel is assigned to the direct outputs and buses?

    The eight outputs of Slot1 work as Direct outputs for Mic/Line channels 1 through 8. The eight
outputs of Slot2 work as Direct outputs for Mic/Line channels 9 through 16. Both slots can also be used as
Bus outputs 1 through 8. When a channel is routed to both the direct output and bus, the direct output
has priority.

    Are the direct outputs pre or post fader?

   The initial setting is post fader. However, this can be changed using the Preferences on the SETUP

    Is there analog Bus output?

    Yes. The bus output format depends on the card that is inserted. Thus, when the AD/DA card (CD8-
AD) is inserted, Bus outputs are analog (1/4" phone balanced, 20 bit linear conversion), and the level can
be set to either -10 dB or +4 dB using a DIP switch for each input and output on the CD8-AD card.

    Is there a reset function for all assignment routing?

     Yes, bus assignment information can be memorized in each Scene memory. Since the memory
function includes Routing, you can store any bus assignment data and recall it.
Digital I/O, Digital Connection

    What is the card configuration?

     One card consists of eight in channels and eight out channels. Which channels are used depends on
which slot the card is installed in. Slot1 and Slot2 support the eight BUS outputs and the direct outputs.
Slot3 and Slot4 support the eight BUS outputs only.

    What is the sampling frequency?

    When Internal clock is used, it is 44.1 kHz or 48 kHz. When External clock is used, frequencies from
30 kHz to 50 kHz are supported.

    How difficult is it to handle wordclock?

    Once the wordclock source has been fixed in a project studio, it will not be necessary to change the
wordclock setting subsequently. Also, the 02R Wordclock Select page in DIGITAL I/O menu provides a
convenient monitoring facility showing which digital sources are currently connected.

    What is the channel status of the digital output?

Format: Consumer or Professional (depends on terminal; S/PDIF out or AES/EBU out)
Category: General
Copy Prohibit: No
Emphasis: No
Type: 2 channel audio signal

    Are there digital AUX send outputs and return inputs?

    No. But since in almost all cases AUX sends are used for effects or cue monitor, analog output is

    Does the AES/EBU input accept a consumer type format digital signal?

     Yes, there is one AES/EBU input and two coaxial (S/PDIF) digital inputs. As well as just monitoring
these digital inputs, the AES/EBU input (2TR IN DIGITAL 1) can be routed to LINE input 17/18, and the
S/PDIF input (2TR IN DIGITAL 2) can be routed to LINE input 19/20. These digital inputs can also be
selected as the wordclock source.
    Does the SPDIF input accept a professional type format digital signal?

    Yes, as above.

    Can the ProMix 01 be used as a submixer for the 02R digital input?

    Yes, but the Promix 01 must be the word clock master. This can be achieved by connecting the
Promix 01's digital output to the 02R's 2TR IN DIGITAL 2 and routing that input to Line inputs 19/20,
which can then be set as the wordclock source.

    Can 24 bit data go directly to a 16 bit recorder?

    No, you need to use the Dither function, which is implemented for the 8 Bus outputs and the Stereo
Out. The number of bits for dither can be set as required (e.g. 16-bit, 18-bit, 20-bit).

    How many Memories are there?

    Scene Memory: 64 Channel Library: 64 (User area only) EQ Library: 128 (40 Preset and 88 User)
Dynamics: 128 (40 Preset and 88 User) Effects: 128 (40 Preset and 88 User) Auto mix 16(512kB)

    How are the libraries used?

     Libraries are provided for EQ, Channel, Effects, and Dynamics. The EQ, Effects, and Dynamics
libraries contain 40 presets. For example, EQ settings can be copied from the library to any EQ. EQ
settings can also be copied between channels via the library. The preset EQ settings are a good place to
start when applying EQ, and they also serve as a useful reference. Unlike scene memories which store all
mix settings, the library allows users to store EQ settings independently.
The Channel library allows users to store channel setups independently. For example, the SNARE setting
includes EQ and Dynamics settings.

    Scene memory looks difficult to use.

     There are dedicated buttons for selecting, storing, and recalling mix scenes. Mix scenes can be titled
for easy identification, and there is also a dedicated Scene Number display LED next to the LCD display.
Scene memory operation is straightforward. Plus there is an UNDO memory function for restoring mix
scene data that has been overwritten accidentally. A preference can be set so that a confirmation message
appears before each scene memory store and recall.

    Is there Scene Memory filtering?

     Yes. For each scene memory you can set the Fader Recall Safe function, using the Preference function
in one of the SETUP menus, to specify whether or not fader information will be protected from Recalling.

    How can scene memory data be saved?

     Scene memory data can be saved via MIDI Bulk Dump to a MIDI Data Filer or MIDI sequencer. The
compact and easy-to-use Yamaha MDF2 MIDI Data Filer is ideal for this job. The 02R Project Manager
software for the Mac can also be used to save scene memory data.

    What EQ functionality is provided?

    Four band full parametric EQ is implemented for each input and for the Stereo output. The lowest EQ
band can be used as shelving or HPF, and the highest EQ band can be used as shelving or LPF.

    What is the frequency range of each EQ?

    Each of the four parametric EQ bands has a range of 20 Hz to 20 kHz, which can be adjusted in 1/12
octave steps, about 120 positions.

    How many steps of gain control in the EQ?

    0.5 dB steps from -18 dB to +18 dB.

    Is there an EQ reset function?

     Yes. Pressing the EQ section's LOW/HPF and HIGH/LPF buttons together resets the selected channel's
EQ, including Frequency, Q, and Gain, to their initial settings. Double-clicking the LOW/HPF, HIGH/LPF,
LMID, or HMID button resets just that band's Gain to 0 dB.

    Does EQ Curve drawing takes a long time?

    No, drawing is very quick due to the twin RISC CPU system (much quicker than ProMix 01). The EQ
curve provides the sound engineer a clear and visual image, allowing him to adjust the EQ accordingly.

    Does the main stereo output have EQ?

    Yes, it has the same EQ as each channel (4 band full parametric EQ), which is very convenient for

    How does Dual Pan work?

     Adjacent odd and even channels can be ganged together using either the PAN menu or by simply
pressing the PAN L/ODD and R/EVEN buttons together on the selected channel. This setting can be made
independently of the Pair settings. Each channel can be panned individually, allowing you to re-locate the
stereo source as desired.

    How is the FLIP key used?

    This key exchanges the function of the faders between the Mic/Line and the Tape inputs including the
[SEL] key; i.e., all functions be exchanged or flipped.

    How do the multifunction faders operate?

    The input channel faders normally work as conventional mixer faders unless an AUX1-8 button has
been pressed. When an AUX send button is pressed, the faders function as the send level controller for
each channel.

    How do I return the faders to their normal operating mode?

    Press any key in the Display Access area except for an AUX button.

    What is the fader resolution in dB steps?

    Physically there are 128 fader steps, and the dB amount of each step depends on the fader position.
Steps are coarse in the lower range, and fine in the upper range, but are well balanced audibly. +10 - -90
and -infinity for input faders 0 - -120 and -infinity for Stereo fader, AUX master, and Bus master

    How many fader groups and mute groups are there?

    There are 4 fader groups (A, B, C, D) and 4 mute groups (E, F, G, H). Fader groups and mute groups
work independently.

    How does the group function work?

      Fader group:Any of the grouped channels can be a master for operation. It is not possible to include
a fader in two or more groups at once.
Mute group:Any channel within a group can be a master. The function depends on the Key On/Off status
at the time that the mute group is defined. For example, suppose that channels 1 through 5 are in the
same mute group, and that when the group is defined, channels 1 to 3 are on and channels 4 and 5 are
off. In this case, pressing an on/off switch for a channel in the group will alternate the on/off setting of
channels 1/2/3 and 4/5.

    How are AUX Send Master levels and the 8 Bus Output levels set?
     The master levels of the eight buses are controlled using the fader icon module in one of the LCD
displays of the [METER] menu page. The Aux Send Master Levels are also controlled in the same display
menu page.

    Is there a crossfade function for channel faders?

    Yes. A crossfade time of up to 10 seconds, in 0.1 sec steps, can be set for individual channel faders
as part of a scene memory.

    Is Auto Fade Out of the master fader possible?

    Yes, by using the built-in automation, which is timecode based, or by setting a crossfade time for a
scene memory.

    Do the faders respond quickly?

    Yes, response is very quick due to the twin RISC CPU system. One of these CPUs is used just for
fader control.

    Are there Dynamics Processors?

    Yes, they are provided for each MIC/LINE and Tape input, for each of the 8 bus outs and for the
STEREO out, for a total of 50 dynamics processors, with functionality that includes Comp, Expand, Gate,
Ducking, and Compander.

    Can dynamics be set independently for each input?

    Yes. Incidentally, parameters of paired channels are linked.

    Do the dynamics effects allow keying from any input channel?

     An input channel can be used as the key in signal for dynamics processing of the channel(s) to its
right; for example, channel 2 can be the key in signal for channel 3, and also for channel 4, channel 5,
and so on. It is also possible to use AUX1 or AUX2 as a key in signal for any channel.

    Are the compressors the same as on the ProMix 01?

     No. A newly developed DSP chip specifically for audio processing is used that is better than those in
the 01.

    How good are the internal effects?

     The 02R uses a Yamaha effect chip for internal effects. Processing capability is similar to the SPX. In
addition, effect parameters have been selected in collaboration with professional sound engineers from
around the world.

    Which parameters can be automated?

   Faders (including AUX send level), channel on/off, EQ, and Pan. About 850 parameters in all. Faders,
ON/OFF, PAN, and EQ can be selected independently for automix editing.

    Will the automation work with SMPTE?

    Yes, and also with MTC (MIDI Time Code). Both SMPTE and MTC can be connected directly.

    What is the accuracy of automation?

    1 frame.

    What timecode frame rates are supported?

     The 02R supports 30NDF, 30DF, 25, and 24. These rates are selected on one of the automix pages.
The internal timecode generator is intended only for checking and trying the automix function. There is no
timecode output.

    What are the fader recording modes?

     There are two fader recording modes: Absolute and Relative. When Absolute mode is selected, the
actual fader movements are recorded. When Relative mode is selected, fader movements relative to the
existing fader data are recorded. This mode, for example, allows you to increase a level by, say, 3 dB
relative to the existing data.

    Can scene memory snapshots be recorded in the automix?

     Yes. Scene memory recalls can be added to the automix either on-the-fly during recording or inserted
into the automix using the Event Edit page (i.e. an off-line edit). The same applies for library recalls too,
such as EQ, Dynamics, Effects, and Channel.

    Can the fader motors be turned off?
    Yes. There is a Motor Off option on one of the automix pages. This can only be used with Automix

    Can automation memory be expanded?

     Yes, optional 1MB ME4M expansion RAM will be available, and one or two ME4Ms can be used for
expansion up to 2 MB. However the 02R comes with 512 KB standard (the same as the DMC1000), and
this will be sufficient for most Application Guide.

    How can Automix data be saved?

    Automix data can be saved via MIDI Bulk Dump to a MIDI Data Filer or MIDI sequencer. The compact
and easy-to-use Yamaha MDF2 MIDI Data Filer is ideal for this job. The 02R Project Manager software for
the Mac can also be used to save Automix data.
User Interface

    How do I use the cursor buttons and the wheel?

    Use the cursor keys to move the cursor in the LCD graphic, the wheel to change parameter values,
and the ENTER key to turn parameters on/off.

    How is the ENTER button used?

    This button works in a number of ways depending on the selected LCD function. In some cases it is
used to enter/confirm execution, for example, selecting the RECALL icon and pressing ENTER to execute a
RECALL in the EQ library. In situations where there are only two options (e.g., EQ on/off, Dynamics
on/off) it is used to set the parameter directly.

    Is there a HELP button or menu?

     No. However the 02R is extremely easy to use, and there are dedicated switches for accessing each
function. In addition, Selected Channel area allows you to use knobs to control bus assignment, AUX, Pan,
and EQ, and also provides a dedicated bus assign button.

    Is there a video output?

    No, but the large and bright LCD graphic is very easy to view.

    What about the LCD display?

    The large FL backlit 320 x 240 dot graphic LCD display allows mix settings and EQ curve graphics to
be seen clearly. The LCD contrast control is located next to the LCD for easy access.

    Is there an Auto Screen function, and for what parameters?

    Yes, for EQ, Pan, Routing, Automix, and Solo. For example, if you adjust an EQ or Pan knob in the
area of the selected channel, the LCD display will automatically change to the EQ or Pan screen.

    How can the input delay be set for all channels in one go?
     By double-clicking the ENTER button in the Delay settings menu all channels can be set to the
currently selected value.

    What other parameters can be set by double-clicking the ENTER button?

   Channel Phase/Attenuator, channel fader crossfade times, AUX pre/post send, channel delay time (as
mentioned above), and all channel select for extracting automix data.
Sonic Quality

    What AD/DA converters are used?

    All inputs (except for Talk Back): 20 bit 64 times oversampling All Outputs (except for AUX Out and
Studio Out): 20 bit 8 times oversampling Aux Out and Studio Out: 18 bit 8 times oversampling Talk Back
input:16 bit, 64 times oversampling

    What is the sonic quality?

     Once past the initial A/D conversion, all processing (EQ, effects, compression, mixing) is performed in
the digital realm. Accordingly, there is no signal degradation and crosstalk. Internal processing is
performed using 32 bits for a dynamic range of 192 dB. The actual analog dynamic range performance is
typically 105 dB Mic/Line In to Stereo Out (A/D + D/A) and typically 110 dB for the Digital In to Analog
Stereo Out (D/A converter).

    What is the S/N?

     Typically it is close to that of analog mixers. All post A/D converter processing (EQ, effects,
compression, mixing) is performed in the digital realm. This means that bus interference noise (i.e., hum
in analog mixers) is completely avoided.
When all channels are off, or channel faders set to their minimum positions, and the ST out fader set to
maximum the 02R is extremely quiet, and the noise level is much lower than that of an analog mixer since
there is no residual noise from the unit itself.

    How much is the residual noise when a fader is bottomed?

    Digital zero, completely -infinity.

    What DSP chips are used?

     The 02R uses new Yamaha DSP chips that contain DSP, digital EQ, and dynamics processing
functions. These have been developed especially for audio processing. The internal audio signal is
processed with 32-bit precision.

    Can all parameters be controlled via MIDI?

     All parameters (i.e. more than 3,000) can be controlled via MIDI (using System Exclusive parameter
changes), including not only faders but also EQ, Effects, and Dynamics. Automation data, setup data,
Scene Memory data, and Library data can be saved to an external computer or a MIDI data filer via MIDI
bulk dump.

    Can the 02R be expanded so that 2 or 3 mixers function as one big mixer?

    Yes. As many units as desired can be cascaded digitally using the optional Cascade Kit (CD8-
CS $BJK (BIT), which includes two cards and one cable. To Cascade two or more mixers together, each
must be fitted with a Cascade card in one of its slots. The Cascade connection carries the 8 bus signals,
any selected four of the eight AUX buses, the Stereo bus, and the SOLO bus.

    Is there a meter bridge?

     Yes, an option called MB02. The meter bridge you to monitor Mic/Line, Tape, Input, AUX Out, and
BUS Out with 12 segment LED (including clip), and Stereo Bus with 32 segment LED. (On the main unit,
the stereo bus meter is 21 segment.)(Meter functionality is also provided in the LCD as a built-in

    What options are available?

    ALESIS, TASCAM (TDIF-1), AES/EBU, YAMAHA, and AD/DA cards are available, with each card
providing 8 in and 8 out. A CASCADE card allows multiple 02R units to be cascaded. Meter Bridge MB02,
Wooden Side Panels W02SP, and a Memory Expansion Kit ME4Mare also available.

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