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Lectrosonics DM812
Digital Automatic Matrix Processor, 8 In, 12 Out

OUR PART #:  DM812

The DM812 is a powerful digital audio processing, mixing and routing system.
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Our Price: $2,610.08
List Price: $3,200.00
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The DM812 is a powerful digital audio processing, mixing and routing system. The primary applications are sound reinforcement and conferencing in boardrooms, courtrooms, worship centers, distance learning systems, hotels and other applications with multiple microphones and loudspeakers. The design represents a milestone in DSP technology in its basic architecture and in its processing speed and efficiency.

The basic architecture consists of 8 mic/line inputs and 12 outputs with a full DSP-based crosspoint matrix that allows every input to be routed to any or all outputs. Following the A-D conversion at each input, the signal passes through multiple DSP filters, ADFE (automatic digital feedback eliminator), a compressor and a digital delay. In the matrix, gain is adjustable from -69 to +20 dB in 1 dB steps at each crosspoint. Each of the 12 outputs provides a digital delay, multiple DSP filters and a compressor/limiter.

Lectrosonics DM812 Features:

  • 8 mic/line inputs, 12 line outputs (4 outputs are mic/line switchable)
  • 8 x 12 digital matrix mixing; gain is adjustable from -69 to +20 dB
  • Proportional gain auto mixing algorithm with AutoSkew™ - US Patent 5,414,776 and 5,402,500
  • Auto mixing operates at the output of the matrix - each input channel can participate differently in each output mix
  • Each output has its own NOM mixing bus
  • 6 filter stages plus compressor, ADFE and delay on each input
  • 9 filter stages plus compressor, limiter and delay on each output
  • 128 macros available for storing up to 64 commands per macro
  • USB and RS-232 interfaces for setup and control
  • Digital I/O ports for "daisy chaining" and to connect other LecNet 2devices
  • AMX© and CRESTRON™ compatible
  • Simultaneous LecNet2 and Third-Party control

Audio Inputs

  • Gain: -10 dB to +60 dB, programmable in 1 dB steps
  • Input impedance: 2.5 k Ohm
  • Phantom voltage: 15 V, programmable
  • Connector: 5-pin Phoenix

Audio Outputs - Floating balanced, either side can be grounded

  • Nominal level: 0 dBu all outputs, -40 dBu selectable on outputs 9 through12
  • Output impedance: Line Only: 50 Ohms differential line level only outputs; Mic/Line: 600 Ohm differential programmable outputs at line level, 130 Ohm differential programmable outputs at microphone level

Audio Performance

  • IMD + noise: 0.1% max. 0.02% nominal input level
  • THD + noise: 0.1% (worst case) 0.02% nominal input level
  • EIN: -126 dBu

Connectors

  • Audio I/O: 5-pin Phoenix
  • Expansion: RJ45
  • Logic I/O: DB25
  • Serial: Standard USB and mini TRS

Proprietary Network

  • Physical level: LVDS (Low Voltage DIfferential Signal) high speed
  • Connector: Four RJ-45
  • Cable quality: Shielded CAT-5
  • Transmission speed: 50 Mbits/s

Programmable Control Inputs

  • Number of inputs: 22
  • Analog voltage range: 0-5V
  • Logic input: TTL, LVTTL, CMOS, LVCMOS

Programmable Control Outputs

  • Number of logic outputs: 16
  • Logic control: active low
  • Max sink current: 100 mA
  • Max supply voltage: 40 V
  • Supply voltage for control I/O: 5 V
  • Max current: 750 mA

Lectrosonics DM812 Specifications:

  • Input Dynamic Range: 96 dB at -50 dBu input level 102 dB at all other levels (unweighted 20 - 20 kHz)
  • Output Dynamic Range: 105 dB (unweighted 20 - 20 kHz)
  • Power requirements: 100-240 VAC, 47-63 Hz
  • Power consumption: 30 Watts
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