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Lectrosonics DM84 Digital Matrix Audio Processor

 
  • Dale #:

    LECT-DM84
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Description

The DM84 is an 8-in, 4-out digital matrix processor with the capability to route any combination of inputs to any combination of outputs with extremely low throughput latency. Automatic microphone mixing is accomplished via a patented Adaptive Proportional Gain algorithm. Sophisticated filtering ... Read More

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Description

The DM84 is an 8-in, 4-out digital matrix processor with the capability to route any combination of inputs to any combination of outputs with extremely low throughput latency. Automatic microphone mixing is accomplished via a patented Adaptive Proportional Gain algorithm. Sophisticated filtering is offered on each input and output. A compressor is available on each input, a compressor and limiter on each output. In addition, each input and output can be configured with a delay setting of up to 100 ms for inputs, 250 ms for outputs. The DM84 runs on the latest-generation DSP architecture and can be integrated as part of a larger system by connecting other DM units (like the DMTH4) via the Digital Audio Network Interface (DANI) bus.

The DM84 has enhanced expandibility - up to a limit of three, combining multiple DM84 units expands not only the number of the mic inputs, but also the number of distinct outputs/mix busses in the system. Stacking 2 units creates a 16x8 mixing matrix; stacking 3 units creates a 24x12 mixing matrix. While individual outputs/mix busses are normally treated as independent NOM busses for microphone mixing, the DM84's phantom mix mode capability allows multiple mix busses to be combined into a single NOM bus for mix-minus sound reinforcement applications.

The DM84 offers eight mic/line inputs with four mic/line outputs; switchable phantom power to handle condenser microphones; programmable front-panel control knobs for easy input and output gain adjustment; front panel indicators for input and output channel activity; and auto mic mixing with Proportional Gain and AutoSkew. The unit is AMX® and CRESTRON® compatible with USB and RS-232 interfaces for setup and control. Also, a programmable I/O interface allows control using contact closures or voltage levels as well as system status monitoring.

  • 8-in/4-out digital matrix architecture
  • Stackable with enlarged matrix up to 24-in/12-out
  • Front panel level controls with activity LEDs
  • 6 filters plus compressor on each input
  • 9 filters plus compressor/limiter on each output
  • USB and RS-232 interfaces for setup and control
  • Fully balanced audio signal flow through entire system
  • Digital I/O ports for connection to other LecNet 2 devices
  • Proportional gain auto mixing algorithm with AutoSkew™ - US Patent 5,414,776
  • Simultaneous LecNet2 and Third-Party control

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Product Specs

Audio inputs
Gain-10 dB to +60 dB; programmable 1 dB steps
Input impedance2.5 k Ohm
Phantom voltage15V, programmable
Connector5-pin Phoenix
Audio outputsFloating balanced, either side can be grounded
Nominal level0 dBu all outputs, -40 dBu selectable on outputs 9 through 12
Output impedance•450 Ohm differential programmable outputs at line level
•5 Ohm differential programmable outputs at microphone level
Input Dynamic Range96 dB at -50 dBu input level; 102 dB at all other levels (unweighted 20 - 20 kHz)
Output Dynamic Range105 dB (unweighted 20 - 20 kHz)
Audio Performance
IMD + noise0.1% max. 0.02% nominal input level
THD + noise0.1% (worst case) 0.02% nominal input level
EIN-126 dBu
Connectors
Audio I/O5-pin Phoenix
ExpansionRJ45
Logic I/ODB25
SerialStandard USB and mini TRS
Digital Audio Network Interface ( DANI)
Physical levelLVDS (Low Voltage DIfferential Signal)high speed
ConnectorFour RJ-45
Cable qualityShielded CAT-5
Transmission speed50 Mbits/s
Programmable control inputs
Number of inputs11
Analog voltage range0-5V
Logic inputTTL, LVTTL, CMOS, LVCMOS
Programmable control outputs
Number of logic outputs8
Logic controlActive low
Max sink current100 mA
Max supply voltage40 V
Supply voltage for control I/O5 V
Max current750 mA
Power requirements100-240 VAC, 47-63 Hz
Power consumption15 Watts

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