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.
Features
- 32 Microphone Pre-Amplifiers
- 30 Multi-Color Illuminating Faders
- 64 x 64 Channel Expansion Slot
- 14 Auxiliary/Group Mixes
- 4 Stereo Lexicon FX Engines
- 66 Input Processing Channels
- Direct Ouput Gain Stabilization
- Copy and Paste Channel Strip
- Global Mode Encoders
- ViSi Remote Control over iPad
Specification
Mixer
| Number of Analog Input Channels | 32 |
| Number of Mic Preamps | 32 |
| Faders | 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 | 1 x HF Shelf: ±15 dB at 800 Hz to 20 kHz 2 x MF Notch/Peak: ±15 dB at 22 Hz to 20 kHz, 6 to 0.3 Q 1 x 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 (Max) |
| 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 Ohms |
| 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) |
| THD | < 0.01% |
Connectivity
| Analog Inputs | 32 x 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″ |
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