User Manual
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Soundcraft Si Expression User Guide V1.0 0213
E & OE.
Soundcraft reserves the right to change specications without notice.
Digital I/O
AES Sample rate converter range 8KHz – 200KHz
External Word Clock In range 48KHz +/-7Hz (internal systems), +/-3Hz with stageboxes.
Word clock out jitter +/- 7ns
Analogue out for 0dBfs +21.5dBu
Converter resolution 24bit
DSP resolution 40 bit oating point
Latency
Mic In to Line Out <0.8 ms
Analogue in to AES out <0.6 ms
AES in to Line Out <0.8ms
AES in to AES out <0.5ms
Stagebox Mic In to Stagebox <0.9mS
Input & Output Levels
Mic Input +22dBu max
Line Input +22dBu max
Mix Output +21.5dBu max
Headphones (@150Ω) 300mW (recommended impedance 32 to 200Ω)
Input & Output Impedances
Mic Input 3kΩ
Line Input 10kΩ
AES Input 110Ω
Outputs 150Ω (balanced), 75Ω (unbalanced)
Word Clock used as Output 50Ω
Word Clock used as Input 4K7Ω
AES Output 110Ω
Lamp Output
12v DC 100mA max (per socket)
Power
Consumption (typical) <130w Si EXPRESSION 3
AC Input voltage range 88-264VAC auto sensing
AC Frequency range 47-63Hz
Operating Conditions
Operating Temperature Range 5°C to 45°C
Humidity 0%-90%, non condensing Ta=40°C (104°F)
Storage Temperature Range -20°C to 60°C (-4°F to 140°F)