Allen & Heath CDM48

Features

• 48 mic/line inputs, 24 line outputs
• XCVI 160×64 FPGA core
  • 96kHz sample rate
  • Variable bit-depth for ultimate precision and noise performance
  • Virtually infinite mix headroom thanks to 96bit accumulator
  • Class leading, ultra-low latency at 0.7ms
     
• 128 Input Channels with full processing
• 64 Mix Outputs with full processing
• Configurable 64 bus architecture (group, FX, aux, matrix, mains)
  • LR, LCR and up to 5.1 mains mode
  • Multiple PFLs
     
• 16 RackExtra FX with dedicated stereo returns
• 24 DCAs
• AMM (Automatic Mic Mixer) up to 64 channels across 1, 2 or 4 zones
• Built-in signal generator and RTA
• New preamp design for extra transparency
• Unique Active PAD circuit for consistent performance with any source
• Connection hub
  • gigaACE gigabit link to Surface
  • 2x DX links for I/O expansion
  • I/O Port – 128 ch 96 kHz
  • Dedicated ME-1 48kHz port
  • 2x Network ports
  • Wordclock BNC I/O
     
• Add up to 22 DX I/O expanders via DX Hub modules or DX Link cards
• Flush front panel with ultra quiet fan
• Reversible rack ears design

Specifciations

• Mic/Line XLR Inputs: Balanced XLR, +48V phantom power
• Mic/Line Preamp: Fully recallable
• Input Sensitivity: -60 to +15dBu
• Analogue Gain: +5 to +60dB, 1dB steps
• Pad: -20dB Active PAD
• Maximum Input Level: +30dBu (PAD in)
• Input Impedance: >4k? (Pad out), >10k? (Pad in)
• Mic EIN: -127dB with 150? source
• Phantom Power indication: Per socket, internal or external phantom power sensing, triggered at 24V

• Analogue XLR Outputs: Balanced, Relay protected
• Output Impedance: <75?
• Nominal Output: +4dBu = 0dB meter reading
• Maximum Output: Level +22dBu
• Residual Output: Noise
  • -92dBu (muted, 20-20kHz)
  • -90dBu (muted, 20-40kHz)

• Measured balanced XLR in to XLR out, 20-20kHz, minimum Gain, Pad out, signal @ 0dB (meter)
• Dynamic Range: 110dB
• System Signal to Noise: -92dB
• Frequency Response: 20Hz - 30kHz +0/-0.8dB
• THD+N (analogue in to out): 0.0015% @ +16dBu output, 1kHz 0dB gain
• Headroom: +18dB
• Internal operating Level: 0dBu
• dBFS Alignment: +18dBu = 0dBFS (+22dBu at XLR output)
• Meter Calibration; 0dB meter = -18dBFS (+4dBu at XLR out)
• Meter Peak: indication: -3dBFS (+19dBu at XLR out)
• Sampling Rate: 96kHz +/- 20 PPM
• ADC: 24-bit Delta-Sigma
• DAC: 24-bit Delta-Sigma
• Latency
  • 0.7 ms (MixRack XLR in to XLR out, Input to Mix)
  • + 5 samples, Surface to Mixrack (GigaACE hop)
  • + 8 samples, DX32 to Mixrack (DX hop)

• Dimensions
  • Width: 481.6 mm
  • Depth: 309 mm
  • Height: 310 mm
     
• Weight: 12kg