Soundcraft Si Expression 2 24-Channel Digital Mixer

Soundcraft Si Expression 2 24-Channel Digital Mixer Specifications

- Frequency Response: Mic / Line In to any Output: ±1.5 dB, 20 Hz - 20 kHz
- T.H.D.: Mic Sensitivity -30 dBu < 0.01% @ 1 kHz

Noise:
- Residual noise: -86 dBu
- Mic Input E.I.N.: 22 Hz - 22 kHz, Unweighted. (max gain)
- -126dBu (150 Ω source)
- Mix noise, masters at unity: < -86 dBu
- 1 input to mix at unity gain: -84 dBu
- CMRR mic @1 KHz (max gain): -80 dBu

Crosstalk (@ 1 kHz):
- Channel ON attenuation: <120 dB
- Channel Fader attenuation: <120 dB
- Mic - Mic: -100 dB @ 1 KHz, -85 dB @ 10 kHz
- Line - Line: -100 dB @ 1 KHz, -85 dB @ 10 kHz

Input Gain:
- Mic Gain: -5 dB - 58 dB integrated pad design, 1 dB steps
- Line Trim: -10 dB - +16 dB

Gate:
- Threshold: -60 dBfs - -6 dBfs
- Depth: -6 0dB - 3 dB
- Attack: 0.1 ms - 200 ms
- Release: 20 ms - 500 ms
- Side-chain HPF: 22 Hz - 2.5 kHz
- Side-chain LPF: 160 Hz - 20 kHz

Compressor:
- Threshold: -52 dBfs - -6 dBfs
- Ratio: 1:1 - 20:1
- Attack: 0.1 ms - 200 ms
- Release: 5 ms - 900 ms
- Makeup Gain: 0 dB - 24 dB

EQ:
- HI MID & LO MID: 22Hz - 20 KHz, ±15 dB Q 6-0.3
- Shelf (HF): 800 Hz - 20 kHz, ±15 dB
- Shelf (LF): 20 Hz - 500 Hz, ±15 dB
- HPF: 40Hz - 1KHz

Delay:
- User adjustable delay: 1 sample - 500 ms
- GEQ: 31 Hz - 16 KHz 1/3 octave

Digital I/O:
- AES Sample rate converter range: 8 KHz - 200 KHz
- External Word Clock In range: 48 KHz ±7 Hz (internal systems), ±3 Hz with stageboxes.
- Word clock out jitter: ± 7 ns
- Analogue out for 0 dBfs: +21.5 dBu
- Converter resolution: 24-bit
- DSP resolution: 40-bit floating point

Latency:
- Mic In to Line Out: <0.8 ms
- Analogue in to AES out: <0.6 ms
- AES in to Line Out: <0.8 ms
- AES in to AES out: <0.5 ms
- Stagebox Mic In to Stagebox: <0.9mS

Input & Output Levels:
- Mic Input: +22 dBu max
- Line Input: +22 dBu max
- Mix Output: +21.5 dBu max
- Headphones: (@150 Ω) 300mW (recommended impedance 75 Ω to 200 Ω)

Input & Output Impedances:
- Mic Input: 3k Ω
- Line Input: 10k Ω
- AES Input: 110 Ω
- Outputs: 150 Ω (balanced), 75 Ω (unbalanced)
- Word Clock used as Output: 50 Ω
- Word Clock used as Input: 4K7 Ω
- AES Output: 110Ω

- USB: Max current 200mA
- Lamp Output: - 12v DC 100mA max (per socket)

Electrical:
- Consumption (typical): < 130W
- 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)

Physical:
- Dimensions (W x H x D): 716 x 168 x 520 mm
- Weight: 15.5 kg

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