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.Features8-in/4-out digital matrix architectureStackable with enlarged matrix up to 24-in/12-outFront panel level controls with activity LEDs6 filters plus compressor on each input9 filters plus compressor/limiter on each outputUSB and RS-232 interfaces for setup and controlFully balanced audio signal flow through entire systemDigital I/O ports for connection to other LecNet 2 devicesProportional gain auto mixing algorithm with AutoSkew™ - US Patent 5,414,776Simultaneous LecNet2 and Third-Party controlAudio InputsGain: -10 dB to +60 dB, programmable in 1 dB stepsInput impedance: 2.5 k OhmPhantom voltage: 15 V, programmableConnector: 5-pin PhoenixAudio Outputs - Floating balanced, either side can be groundedNominal level: 0 dBu all outputs, -40 dBu selectable on outputs 9 through 12Output impedance: 450 Ohms differential programmable outputs at line level; 5 Ohm differential programmable outputs at microphone levelAudio PerformanceIMD + noise: 0.1% max. 0.02% nominal input levelTHD + noise: 0.1% (worst case) 0.02% nominal input levelEIN: -126 dBuConnectorsAudio I/O: 5-pin PhoenixExpansion: RJ45Logic I/O: DB25Serial: Standard USB and mini TRSDigital Audio Network Interface (DANI)Physical level: LVDS (Low Voltage DIfferential Signal)Connector: Four RJ-45Cable quality: Shielded CAT-5Transmission speed: 50 Mbits/sProgrammable Control InputsNumber of inputs: 11Analog voltage range: 0-5VLogic input: TTL, LVTTL, CMOS, LVCMOSProgrammable Control OutputsNumber of logic outputs: 8Logic control: active lowMax sink current: 100 mAMax supply voltage: 40 VSupply voltage for control I/O: 5 VMax current: 750 mASpecificationsInput 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 HzPower consumption: 15 Watts