SOUNDCRAFT Si3

The Soundcraft Si3 is designed for live use on both touring sound systems and in fixed installations and its intuitive operation and high input and bus count makes it a perfect choice for House of Worship sound systems. Theatre users will also find the Soundcraft Si3 very applicable in their area.

Soundcraft has revisited the control topology employed on the ground-breaking Spirit 328 and 324 digital consoles, and made it even easier. The model is this - above each fader is a rotary encoder, the function of which changes according to the mode selected. This ‘bank’ of encoders, known as the VCS or Virtual Channel Strip can be set to control every function of a channel (known as Channel mode), so mic gain, EQ, dynamics, auxes, panning are all controlled as if you had a normal analogue channel strip laid sideways in front of you. The VCS also incorporates all the switching you would find on an individual analogue channel strip (48v, Phase Reverse, EQ In etc.). Alternatively, in what is called Global mode, each encoder controls the same function for each channel. So, for example, the encoders could control all the mic gains, pans or a chosen Aux bus (very useful for creating monitor mixes).

Technical Specifications

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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