DiGiCo S31 Digital Mixing Control Surface

S31 : Overview

Favoured by multitudes of sound engineers all over the world, the S31 brings DiGiCo ownership within easy reach of everyone with flagship audio quality, power and flexibility all in a compact frame that will travel easily in a car. With its increased functionality and accessibility, the S31 opens even more doors to limitless mixing creativity, at an astonishing price point.

The S31’s expanded work surface is as intuitive as it familiar, with three 10-inch multi-touch screens over three banks of 10 faders, giving clear visual feedback and control of 30 channels simultaneously. With 48 flex-channels, the equivalent of 16 busses and benchmark 96kHz performance, the S31 is in every sense worthy of the DiGiCo badge.

Based on the same pioneering design approach as the industry-leading SD-Range, the S31 boasts the same proprietary algorithms plus a new ARM QuadCore RISC processor which runs in harmony with the FPGA core. The result is faster processing with lower power consumption, all packaged in the workflow that the industry’s most respected engineers rely upon – now available to everyone.

Under The Hood

Familiar to the touch and built for the road, the S31 offers mixing without limits. The integration of a high power QuadCore SoC with high bandwidth memory, a low power 484-ball array FPGA and a fourth-generation control SHARC DSP offers unprecedented power today as well as the potential for a future processing upgrade path. The compact footprint of the S31 has no relationship to the scale of processing power going on under the polycarbonate worksurface.

Visual feedback is further reinforced by the HTL (Hidden Till Lit) functionality of the encoder rings, while parameters currently not in use are automatically greyed out, always drawing your attention to the right controls.

The triple screens aim to aid the new user learning curve and remove distractions by not only giving you more channels to view at any one time, but also allowing one screen to be used as a setup or master whilst the others are utilised for operation. All touchscreens are responsive to EQ shaping, with fine-tuning available via the tactile and intuitive rotary encoders.

Altering the Channel Bank layout, and mixing and matching any channel, aux, group, control group, or matrix within a bank, is easily accomplished by drag and drop at the touch of a screen.

I/O

The console’s rear panel offers 24 Mic inputs and 12 Line outputs, a UB MADI interface for DAW recording, in addition to dual DMI (DiGiCo Multichannel Interface) option card slots, interfacing to industry formats such as Analogue, MADI, Dante, Waves SoundGrid, or Calrec’s Hydra 2 Network.

Get instant access to 32 fully integrated low-latency Waves stereo MultiRacks, each with up to eight plug-ins per rack, by fitting the DiGiCo Waves SoundGrid DMI card linked to external SoundGrid or DiGiGrid servers, giving a total of 128 additional I/O.

S31 I/O Racks & Options

• D-Rack
• SD-Rack
• SD-MiNi Rack
• SD-Nano Rack
• A168 STAGE
• D2-Rack
• Orange Box
• Waves SoundGrid
• Little Red Box
• Little Blue Box
• UB MADI

Features:

• 48 Flexi Input Channels
• 16 Flexi Aux / Sub-Group Busses
• LR Master Buss
• 10 x 8 Full Processing Matrix
• 4 Dynamic Equalizers (to follow Yukio)
• 96kHz Sample Rate

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General Specifications

• 48 x Input flex-channels Mono/Stereo (equivalent of 96 DSP channels)
• 46 busses: 16 x flexi-busses Mono/Stereo (equivalent of 32 DSP busses), Stereo Master (2), Solo busses (2 stereo, 4 total), and 10 x 8 Matrix (8)
• 10 x Control Groups
• 1 x Compressor per channel and buss
• 1 x Gate per channel and buss (switchable to ducker, or compressor with side chain access)
• 16 x assignable 32 band Graphic EQs
• 8 x FX engines (reverbs, delays, w/modulation and enhancer)
• 4 x assignable DiGiTuBes
• 4 x assignable Multiband Compressors
• 4 x assignable Dynamic EQ's
• User definable Macros
• An extremely high power headphone amplifier with 1/4 inch and mini jack socket
• 96kHz as standard
• 24 mic/line inputs
• 12 analogue outs
• 2 AES/EBU I/O (mono)
• Word Clock I/O
• 1 GPI and 1 GPO
• DVI out (for an external monitor)
• 2 DMI Card slots (up to 64 I/O per slot)
• 2 Ethernet connections for Networking
• 2 x 24 segment master/solo meters
• Touch sensitive rotaries with integrated switch & HTL
• 3 x multi-touch screens
• 31 x touch sensitive moving faders
• 4 x layers of banks of 10 faders
• Customisable bank and channel layout
• Snapshots
• Integrated USB2 Audio I/O interface for recording and playback of up to 48 channels

Audio Specification

• Sample Rate 48kHz, 96kHz
• Processing Delay 2ms Typical @ 48k (48 Stereo Channels, Stage Input Through L-R Buss to Stage Output) 1.1ms @ 96kHz
• Internal Processing Up to 40-bit, Floating Point
• A>D & D>A 24-bit Converter Bit Depth
• Frequency Response +/- 0.6dB (20Hz - 20kHz)
• THD <0.05% @ Unity Gain, 10dB Input @ 1kHz
• Channel Separation Better Than 90dB (40Hz - 15kHz)
• Residual Output <90dBu Typical
• Noise (20Hz - 20kHz)
• Microphone Input Better Than -126dB Equivalent Noise
• Maximum Output Level +22dBu
• Maximum Input Level +22dBu

Processing Channel Specification

• Input Name: User-Defined
• Channel Selection: Mono / Stereo
• Input Routing: Main Input
• Analogue Gain: -20 to +60dB
• Phase: Normal / Reverse
• Digital Trim: 40 to +40dB
• Delay: 0 - 682ms
• DiGiTuBe Drive: 0.01 - 50.0
• Bias: 0 - 6
• LPF: 20 - 20kHz, 24dB/Oct
• HPF: 20 - 20kHz, 24dB/Oct
• Insert A: (Pre EQ/Dyn) On/Off
• Equalisation 4 Band EQ: Parametric or Dynamic (Low/Lowshelf, Lower-Mid/Lowshelf, Upper-Mid/Hishelf, Hi/Hishelf)
• On/Off
• Freq; 20 - 20kHz
• Gain; +/- 18dB
• Q: 0.1 -20 (Parametric) / 0.10-0.90 (Shelf)
• Dynamics 1: Single or 4 x Multiband (3-Band)
• Compressor; On/Off
• Threshold; -60 - 0dB
• Attack; 500us - 100ms
• Release; 5ms - 5s
• Ratio; 1:1 - 50:1
• Gain; 0 to +40dB
• Hi Crossover; 20Hz - 20kHz
• Lo Crossover; 20Hz - 20kHz
• Knee; Hard, Med, Soft
• Dynamics 2: On/Off
• Gate / Ducker Threshold; -60 - 0dB
• Attack; 50us - 100ms
• Hold; 2ms - 2s
• Release; 5ms - 5s
• Range; 0 - 90dB
• Key; Any Source
• Key Listen
• Freq/Width; 20 - 20kHz
• Compressor; On/Off
• Threshold; -60 - 0dB
• Attack; 500us - 100ms
• Release; 5ms - 5s
• Ratio; 1:1 - 50:1
• Gain; 0 to +40dB
• Link; Any Channel / Buss
• S/C Source : Any Source
• S/C Listen : On/Off
• S/C Filter Freq/Width: 20Hz - 20kHz
• Insert B: (Post EQ/Dyn) On/Off
• Mute: Channel Mute
• Solo: Solo Buss 1 / Solo Buss 2 / Both,
• Channel Safe: Socket Properties, Input Route, Mono/Stereo, Label, Filters, Trim, Delay, Tube, Insert A, EQ, Dyn1, Dyn2, Insert B, Aux, Group Assigns, Pan, Fade, Mute, Direct Outs, Full Safe
• Output: Routing Buss,
• Insert A, Insert B,
• Direct: Post-Fade
• Fader: 100mm Motorised Fader ∞ to +10dB

Processing Channel Specification

• Name: User-Defined
• Phase: Normal / Reverse
• Digital Trim: -40 to +40dB
• Delay: 0 - 682ms
• DiGiTuBe Drive: 0.01 - 50.0 Bias 0 - 6
• LPF: 20 - 20kHz, 24dB / Oct
• HPF: 20 - 20kHz, 24dB / Oct
• Insert A: (Pre EQ/Dyn) On/Off
• Equalisation 4 Band EQ: Parametric or Dynamic (Low/Lowshelf, Lower-Mid/Lowshelf, Upper-Mid/Hishelf, Hi/Hishelf)
• On/Off
• Freq; 20 - 20kHz
• Gain; +/- 18dB
• Q: 0.1 -20 (Parametric) / 0.10-0.90 (Shelf)
• Dynamics 1: Single or 4 x Multiband (3-band)
• Compressor; On/Off
• Threshold; -60 - 0dB
• Attack; 500us - 100ms
• Release; 5ms - 5s
• Ratio; 1:1 - 50:1
• Gain; 0 to +40dB
• Hi Crossover; 20Hz - 20kHz
• Lo Crossover; 20Hz - 20kHz
• Knee; Hard, Med, Soft
• Gate / Ducker Threshold; -60 - 0dB
• Attack; 50us - 100ms
• Hold; 2ms - 2s
• Release; 5ms - 5s
• Range; 0 - 90dB
• Key; Any Source
• Key Listen
• Freq/Width; 20 - 20kHz
• Compressor On/Off
• Threshold; -60 - 0dB
• Attack; 500us - 100ms
• Release; 5ms - 5s
• Ratio; 1:1 - 50:1
• Gain; 0 to +40dB
• Link; Any Channel/Buss
• S/C Source: Any source
• S/C Listen: On/Off
• S/C Filter Freq/Width: 20Hz - 20kHz
• Insert B: (Post EQ/Dyn) On/Off
• Mute: Channel Mute
• Solo: Solo Buss 1 / Solo Buss 2 / Both,
• Channel Safe: Mono/Stereo, Bus Mode, Label, Filters, Trim, Delay, Tube, Insert A, EQ, Dyn1, Dyn2, Insert B, Group Assigns, Fade, Mute, Direct Outs, Full Safe
• Output Routing: Outputs, Insert A, Insert B
• Fader: 100mm Motorised Fader ∞ to + 10dB