The DM84 from Lectrosonics is an eight-input, four output matrix mixer, with extensive DSP both on input and output, and includes automatic feedback suppression, an automatic mixing algorithm and remote control capabilities. The unit is suitable for sound reinforcement applications, recording in boardrooms, courtrooms, worship centers, distance learning systems and hotels, and can function stand-alone, or as part of a larger LecNet2 system.
Main Benefits
- 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
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 expandability - 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 buses are normally treated as independent NOM buses 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.
Tech Specs
| Frequency Response |
20Hz to 20kHz |
| Dynamic Range |
Input: 96dB @ -50dBu input level; 102dB at all other levels (unweighted 20Hz to 20kHz)
Output: 105dB (unweighted 20Hz to 20kHz) |
| Inputs |
5-pin Phoenix |
| Outputs |
5-pin Phoenix |
| Other Connectors |
4 x RJ-45 Expansion
1 x DB-25 Logic I/O
1 x USB
1 x 1/8" TRS Stereo Mini Serial |
| Input Impedance |
2.5kΩ |
| Output Impedance |
450Ω differential programmable outputs at line level
5Ω differential programmable outputs at microphone level |
| Maximum Input Level |
20dBu |
| Maximum Output Level |
+20dBu |
| Sample Rate |
48KHz |
| Phantom Power |
+15VDC, programmable |
| Crosstalk |
Line Level -103 dB
Mic Level -101 dB |
| THD + N |
0.02%, nominal input level |
| Dimensions (WxDxH) |
19" 1U Rackmount |
| Weight |
3.6 lbs (1.6kg) |
| Specialties |
Up to three units can be stacked to create a 24x 24 mixing matrix |
Contents
- 1 - Power Cord (Part #21499)
- 1 - Interconnect Cable - Black (Part #21529-1)
- 1 - Interconnect Cable - Red (Part #21710-1)
- 1 - 25-Pin Female Connectors (Part #21558)
- 6 - 5-Position Plug (Part #21580)
- 1 - USB Cable (Part #21713)
- 1 - CAT5 Cable (Part #21716)
- 1 - Adjustment Tool (Part #35679)
- 1 - LecNet2 Software CD
- 1 - Manual
