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SD 312

High Output Series
Full Range Main Monitor

HOS SD312 High Output Series Modular Main Monitor

Specifications

Power handling as per EIA standard RS-426A continuous / program / peak
  HF 300 / 600 / 1200w
  MF 350 / 700 / 1400w
  LF 960 / 1920 / 3840w
 
Sensitivity 2.83v @ 1m   (low impedance drivers)
  HF 102dB
  MF 103dB (105dB)
  LF 101dB (103dB)
 
Peak SPL   137dB
 
Impedance   (low impedance drivers)
  HF 6 Ohm
  MF 8 Ohm (4 Ohm)
  LF 4 Ohm (2.7 Ohm)
 
2nd/3rd Harmonic Distortion (with supplied Hot House amps and SDX Crossover)
        1% full power HF .54 / .01%
  MF .11 / .11%
  LF .12 / .32%
        10% full power HF .63 / .16%
  MF .14 / .12%
  LF .15 / .50%
 
Crossover point range, 4th order @ 24dB/octave with SDX Crossover
  HF 1900-2800Hz
  MF 180-210Hz
  LF 80-110Hz (w/ SB 412)
 
Frequency Response +/- 2dB 37-5000Hz
        (320 liter enclosure) +/- 3dB 5000-22000Hz

Three basic enclosure volumes offered are 320, 420, and 530 liters. The table below shows low frequency capability of each cabinet size/tuning combination beyond the above quoted specification. Sealing one port lowers system tuning with a 2dB loss in sensitivity. Flat response to 20Hz can be achieved in any configuration with a slight decrease in power handling by installing the Low Frequency Contour option in the SDX Crossover.


LF Extension   320 liter 420 liter 530 liter
        4 / 3 ports flat 35 / 31Hz 31 / 27Hz 27 / 25Hz
  -3dB 30 / 28Hz 28 / 24Hz 24 / 22Hz
  -6dB 28 / 25Hz 25 / 22Hz 22 / 20Hz
 
Dimensions 31.9"H x 35.8"W x 21.2"D 27.2"D 33.2"D

Connection to all cabinets is via 3 high current Speakon NL4FC jacks.

All voice coils are damped and cooled with magnetic fluid.


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