Features & Applications
Features
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Applications
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Detailed Description CDM32
CDM32 is the processing MixRack in an Allen & Heath dLive digital mixing system. Its 96 kHz XCVI FPGA engine supports 128 input channels and 64 configurable mix buses, independently of the amount of local analog I/O. This model provides 32 microphone/line inputs and 16 line outputs.
The mix engine includes full input and output processing, DEEP embedded processing, sixteen RackExtra FX engines and dedicated stereo returns. Flexible buses can serve groups, auxiliaries, FX sends, matrices and mains. Automatic mic mixing, DCAs, a signal generator, RTA and spectrogram support a broad range of live and installed workflows.
1 optional 128-channel I/O slot provides connections for compatible audio-network formats. gigaACE, DX and the dedicated ME port connect compatible control and I/O hardware. A dLive surface or compatible software provides control. RackUltra FX requires the optional upgrade; it is not included in the original base MixRack.
Manufacturer documents: Technical Datasheet · dLive System Brochure
Technical Specifications CDM32
Mix engine and connections |
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|---|---|
| TYPE | dLive MixRack; 96 kHz XCVI FPGA processing |
| INPUT PROCESSING CHANNELS | 128; mono / stereo configurable |
| MIX BUSES | 64 configurable: group, aux, FX, matrix or mains |
| MAIN MODES | LR, LCR and up to 5.1 |
| RACKEXTRA FX | 16 engines with dedicated stereo returns |
| AUTOMATIC MIC MIXING | Up to 64 channels across 4 zones |
| DCA GROUPS | 24 |
| LOCAL MIC/LINE INPUTS | 32 |
| LOCAL XLR OUTPUTS | 16 |
| I/O SLOTS | 1 × 128-channel / 96 kHz |
| SURFACE LINK | Single gigaACE |
| DX EXPANSION | 2 DX links |
| ME CONNECTION | Dedicated 48 kHz ME port |
| CONTROL NETWORK | 2 Ethernet ports; BNC wordclock input / output |
| PROCESSING | Input and mix processing; DEEP embedded processing; signal generator, RTA and spectrogram |
| RACKULTRA FX | Optional upgrade; not included on the original base MixRack |
Analog inputs |
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| MIC/LINE INPUT TYPE | Balanced XLR; +48 V phantom power |
| PREAMP | Fully recallable |
| INPUT SENSITIVITY | −60 to +15 dBu |
| ANALOG GAIN | +5 to +60 dB in 1 dB steps |
| PAD | −20 dB Active PAD |
| MAXIMUM INPUT LEVEL | +30 dBu, PAD in |
| INPUT IMPEDANCE | >4 kΩ, PAD out; >10 kΩ, PAD in |
| MIC EIN | −127 dB with a 150 Ω source |
| PHANTOM-POWER INDICATION | Per socket; internal / external sensing, triggered at 24 V |
Analog outputs |
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| OUTPUT TYPE | Balanced XLR; relay protection |
| OUTPUT IMPEDANCE | <75 Ω |
| NOMINAL OUTPUT | +4 dBu = 0 dB meter reading |
| MAXIMUM OUTPUT | +22 dBu |
| RESIDUAL NOISE, MUTED | −92 dBu, 20 Hz–20 kHz; −90 dBu, 20 Hz–40 kHz |
System performance |
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| MEASUREMENT PATH | Balanced XLR input to XLR output, minimum gain, PAD out; 20 Hz–20 kHz |
| DYNAMIC RANGE | 110 dB |
| SYSTEM SIGNAL-TO-NOISE ENTRY | −92 dB, as specified |
| FREQUENCY RESPONSE | 20 Hz–30 kHz, +0/−0.8 dB |
| THD+N, ANALOG INPUT TO OUTPUT | 0.0015% at +16 dBu output, 1 kHz, 0 dB gain |
| HEADROOM | +18 dB |
| INTERNAL OPERATING LEVEL | 0 dBu |
| DBFS ALIGNMENT | +18 dBu = 0 dBFS; +22 dBu at XLR output |
| METER CALIBRATION | 0 dB meter = −18 dBFS; +4 dBu at XLR output |
| METER PEAK INDICATION | −3 dBFS; +19 dBu at XLR output |
| SAMPLE RATE | 96 kHz ±20 ppm |
| ADC | 24-bit Delta-Sigma |
| DAC | 24-bit Delta-Sigma |
| LATENCY | 0.7 ms, MixRack XLR input to XLR output, input to mix; +5 samples per gigaACE hop; +8 samples per DX hop |
Power and environment |
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| MAINS | 100–240 V AC, 50/60 Hz |
| MAXIMUM POWER | 175 W in Technical Specifications; rear-panel illustrations have different ratings — verify supplied unit label |
| OPERATING TEMPERATURE | 0–35°C |
Dimensions and weight |
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| DIMENSIONS (W × D × H) | 481.6 × 309 × 221 mm |
| WEIGHT | 10 kg |
| PACKED DIMENSIONS (W × D × H) | 600 × 430 × 380 mm |
| PACKED WEIGHT | 12 kg |
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