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Bipole Metronome with 2 x CSS EL70 by ntz11397

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									Bipole Metronome with 2 x CSS EL70
Mass Loaded Quadratic Quarter Wave Tube (ML-QQWT)
concept by Steve Cresswell, designed by D Dlugos & S Lindgren




Elegant bipole floorstander utilizing 2 CSS EL70 or Planet10-hifi EL70eN.
• Bipolar radiation means no bafflestep problems
• Large spacious soundstage.
• Quarter wave design gives bass into the high 30s in room
• Optional side mount of 2nd driver if insufficient space to the rear wall
                                                                                 Bipole Metronome
                                                                                 ML-QQWT for 2 x CSS EL70 0v9
                                                                                 concept by Steve Cresswell
                                                                                 designed by D Dlugos & S Lindgren
                                                                                 09-feb-10 | drawn by dld




 6 13/32
 [162.4]
   5                                                                                                    5
 [127]                                                                                                [127]




                                                                                                                       7 5/8
                                                                                                                      [193.9]
                                                                                      48 1/8
                                                                                     [1222.4]
                                                                                                                  120°



                        48
                     [1219.2]                                     52 5/8
                                                                  [1337]
                            52 1/2
                           [1333.5]



                                   35 3/4
                                  [908.1]




                                                  85.83°




                                                                                                        6
                                                4                                                    [152.3]
                                             [101.6]
                                                                                                       12
     12                                                                                             [304.8]
  [304.8]              3 3/4
   14 1/16            [95.3]
  [356.9]                                         Notes:
                                                  1/ drawing made with 3/4" (19.1 mm) material. Baltic Birch or other high
                                                  ply plywood recommended
Port is 3/4" long (thickness of                   2/ line internal panel behind driver to reduce reflections. Use very little or
    material in this drawing)                     no other damping in the box to taste – additional damping best placed
                                                  above driver.
                                                  3/ Driver brace should be snug with the speaker's magnet, but not so
                                                  much as to stress the basket
                                                  4/ a round-over or champher on the vertical edges is recommended
                  Front width dimensions          5/ holes & details of the holey brace are suggestive only
                  same as in the side view        6/ maximum bass requires a hard platform for the speaker to sit on
                                                                                             5
                                                                                           [127]
                                                                                         4 57/64
                                                                                         [124.22]



                                    4 57/64
                                    [124.22]                         6 25/64
                                                                     [162.42]                                  4.17°




4.15°                                               16 37/64
                                                    [421.19]
                                                                                          4.16°




                                         52 11/16
                                        [1338.43]




        12 17/32
        [318.15]
                                                           14 3/64                     1/16
                                                          [356.89]                  [1.39273]
         This projection is only of the face,
  Specified dimension includes added 1/16"
        (1.39mm) due to angle and ignores
compound angle at the edges (very small)                  top & bottom are square




Bipole Metronome EL70
Side Panel Auxilury Projection
concept by Steve Cresswell                                                                 12
designed by D Dlugos & S Lindgren
08-feb-10 | drawn by dld                                                                [304.8]
                                                                                                     12 7/64
                                                                                                    [307.58]
       16
Zd = [406.4]




                 Driver holes
               on the Zd Line




                           Bipole Metronome EL70
                           Alternate Side Mount
                           concept by Steve Cresswell
                           designed by D Dlugos & S Lindgren
                           07-feb-10 | drawn by dld
Bipole Metronome EL70
5' x 5' Cut Sheet
concept by Steve Cresswell
designed by D Dlugos & S Lindgren
09-feb-10 | drawn by dld




  24 7/16
  [620.2]




                                     12 1/8
                                    [307.6]
Bipole Metronome EL70
4' x 8' Cut Sheet
concept by Steve Cresswell
designed by D Dlugos & S Lindgren
09-feb-10 | drawn by dld

								
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