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Soundcraft Si3  
 

 
 
Frequency Response
  Mic input to Line output +0/-1dB, 20Hz – 20kHz
  Stereo input to master output +0.5/-0.5dB, 20Hz – 20kHz
     
T.H.D. & Noise
  10Hz-22kHz  
  Mic In (min gain) to Bus output 0.006% @ 1kHz
  Mic In (max gain) to Bus output 0.008% @ 1kHz
  Stereo input to master output 0.005% @ 1kHz
     
Mic Input E.I.N. <-126dBu (150Ω source)
   22Hz-22kHz bandwidth, unweighted  
     
Residual Noise <-88dBu
  Master output;
no inputs routed, Mix fader @0dB
 
     
CMRR 80dB @ 1kHz
  Mic input  
     
Sampling Frequency 48kHz
     
Convertor Resolution 24 bit
     
Latency  
  Mic Input to Bus output < 1ms @48kHz
     
DSP Resolution 40-bit floating point
     
Internal Clock  
  Accuracy < +/- 50ppm
  Jitter < +/- 5ns
     
Input & Output Levels  
  Mic Inputs +26dBu max
  Stereo Inputs / Returns +28dBu max
  Bus Outputs +22dBu max
  Nominal Operating Level 0dBu (-22dBFS)
     
Input & Output Impedances  
  Mic Inputs 6k8Ω
  All other analogue Inputs >10kΩ
  Line Ouptuts <75Ω
     
Oscillator 20Hz to 20kHz Sine/Pink Noise, variable level
     
Filters  
Channel HP Filter 22Hz-1kHz,    18dB per octave
Channel LP Filter 500Hz-20kHz, 18dB per octave
     
EQ (Inputs and Bus Outputs)  
  HF 22Hz-20kHz, +/-15dB, Q= 0.3-6.0 or Shelving
  Hi-Mid 22Hz-20kHz, +/-15dB, Q=0.3-6.0
  Lo-Mid 22Hz-20kHz, +/-15dB, Q=0.3-6.0
  LF 22Hz-20kHz, +/-15dB, Q= 0.3-6.0 or Shelving
     
Metering Internal 14-segment LED bargraphs for all Outputs. 12-section plus 9-section gain reduction OLED meters for all Inputs.
     
Mains Voltage Operating Range 90-264V, 47-63Hz, autoranging
     
Mains Power Consumption 400W 
     
Temperature/Humidity Range  
  Operating Temperature Range 0°C  –  45°C (32°F – 113°F)
  Relative Humidity 0%  –  90%, non-condensing Ta=40°C (104°F)
  Storage Temperature Range -20°C  –  60°C (-4°F – 140°F)
     

Soundcraft reserves the right to improve or otherwise alter any information supplied in this document or any other documentation supplied hereafter. E&OE 03/06



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