The Soundcraft Si Expression 3 Digital Mixer is a digital mixing console designed for live sound applications. The mixer features 32 microphone preamps, 4 line inputs, AES in, 4 internal stereo FX returns, 30 faders, a 64 x 64 expansion slot for additional routing possibilities, and 66 input processing channels.
Every input processing channel on the board can be routed through a dedicated high-pass filter, input delay, compressor, gate, and four-band equalizer. Each channel is also under the control of an automation system with four mute groups and illuminated faders to keep track of signal processing. For outputs, the mixer includes 16 balanced line outputs, a headphone monitor output, AES output, and the 64 x 64 expansion slot.
Soundcraft Si Expression 3 Specs
Mixer
Number of Analog Input Channels
32
Number of Mic Preamps
32
Faders & Level Adjustment
30
Signal Processing
Gain/Trim Range
Mic: -5 dB to 58 dB (in 1 dB Steps) Line: -10 dB to +16 dB
Gate Parameters
Threshold: -60 to -6 dBFS Depth: -60 to -3 dB Attack: .1 ms to 200 ms Release: 20 ms to 500 ms
Compressor Parameters
Threshold: -52 to -6 dBFS Ratio: 1:1 to 20:1 Attack: .1 to 200 ms Release: 5 to 900 ms Makeup Gain: 0 to 24 dB
Sidechain Filters
Gate: High-Pass: 22 Hz to 2.5 kHz Low-Pass: 160 Hz to 20 kHz
EQ Parameters
1x HF Shelf: ±15 dB at 800 Hz to 20 kHz 2x MF Notch/Peak: ±15 dB at 22 Hz to 20 kHz, 6 to 0.3 Q 1x LF Shelf: ±15 dB at 20 Hz to 500 Hz
Graphic EQ
28-Band 1/3 Octave, 31 Hz to 16 kHz
Filters
High-Pass: 40 Hz to 1 kHz
Audio Delay
Adjustable Up to 500 ms
Digital Audio
Sample Rates
AD/DA Conversion: Up to 200 kHz
Bit Depth
AD/DA Conversion: 24-Bit
DSP
40-Bit Floating Point
Jitter
± 7 ns
Word Clock Input
48 kHz ±7 Hz
Latency
< 0.8 ms (Mic Input to Line Output) < 0.6 ms (Analog Input to AES Output) < 0.8 ms (AES Input to Line Output) < 0.5 ms (AES Input to AES Output) < 0.9 ms (Stagebox Input to Stagebox Output)
Performance
dBFS Reference Level
+21.5 dBu = 0 dBFS
Frequency Response
Mic/Line Input: 20 Hz to 20 kHz ±1.5 dB
Max Input Level
Mic Input: +22 dBu Line Input: +22 dBu
Output Level
Mix Output: +21.5 dBu (2901653168)
Headphone Output Power
300 mW into 150 Ohms
I/O Impedance
Mic Input: 3 Kilohms Line Input: 10 Kilohms AES3 Input: 110 Kilohms Output: 150 Ohms (Balanced) 75 Ohms (Unbalanced) Word Clock Output: 50 Ohms Word Clock Input: 47 Kilohms AES3 Output: 110 OhmsÂÂ
Crosstalk
Adjacent Channels: < 120 dB Adjacent Inputs: -100 dB at 1 kHz -85 dB at 10 kHz
CMRR
-80 dBu
EIN
-84 dBu at Unity Gain -126 dBu (2901653041)
Noise Floor
< -86 dBu < -86 dBu (at Unity Gain)ÂÂ
THD
< 0.01%ÂÂ
Connectivity
Analog Inputs
32x XLR Balanced Mic Input
Power
AC Input Power
88 to 264 VAC, 50 / 60 Hz
Power Consumption
130 W (Maximum)
Lamp Power
12 VDC at 100 mA per Socket
Physical
Operating Temperature
41 to 113°F / 5 to 45°C
Operating Humidity
0 to 90%
Storage Temperature
-4 to 140°F / -20 to 60°C
Dimensions
6.7 x 36.5 x 20.5″ / 169 x 928 x 520 mm
Weight
46.2 lb / 21 kg
Packaging Info
Package Weight
53.3 lb
Box Dimensions (LxWxH)
41 x 27 x 11″
Additional information
Weight
55.2 lbs
Dimensions
25 × 40.5 × 9.8 in
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