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D-901 Digital Mixer

D-901

The D-901 is a 19-type rack-mounted (3U high) digital mixer configured with 12 inputs, 8 buses, and 8 outputs. It features signal processing functions necessary for sound systems such as feedback suppression and auto-mixing. Modular construction permits flexible configuration of inputs and outputs, from 2-IN/4-OUT to 12-IN/8-OUT systems. All functional parameters can be set at the unit. Settings can be stored in the unit's internal memory as "preset memory" and can be recalled using the front panel-mounted operation keys.

 

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Specification
* 0 dB = 0.775 V
Power Source 100 - 120 V, 230 V AC, 50/60 Hz
Power Consumption 40 W
Frequency Response 20 - 20,000 Hz, ±1 dB (+4 dB* input)
Input Max. 12 channels, modular construction (modules optional)
Output Max. 8 channels, modular construction (modules optional)
Signal Processing
Feedback Suppression Function 12 filters (auto/dynamic)
Auto-Mixing Function Ducker (automatic muting), NOM attenuation
Auto-Mixing Group 4 groups
Equalizer/Filter Parametric equalizer: 20-20,000 Hz, ±15 dB, Q: 0.267-69.249
Filtering: High-pass filter 20 - 20,000 Hz, 6 dB/oct, 12 dB/oct
Low-pass filter 20 - 20,000 Hz, 6 dB/oct, 12 dB/oct
Notch filter 20 - 20,000 Hz, Q: 8.651 - 69.249
All-pass filter 20 - 20,000 Hz, Q: 0.267 - 69.249
High shelving filter 6 - 20 kHz, ±15 dB
Low shelving filter 20 - 500 Hz, ±15 dB
Horn equalizer 20 kHz, 0 to +18 dB (1 dB steps)
Crossover filter: 20 - 20,000 Hz,
6 dB/oct, 12 dB/oct, 18 dB/oct, 24 dB/oct
Compressor/Auto-Leveler (Compressor mode)
Threshold: -20 to +20 dB (1 dB steps)
Ratio: 1:1, 2:1, 3:1, 4:1, 8:1, 12:1, 20:1, ∞ :1
Attack time: 0.2 ms - 5 s
Release time: 10 ms to 5 s
Gain: -∞ to +10 dB
(Auto-leveler mode)
Target level: -20 to +10 dB (1 dB steps)
Maximum gain: 0 to +20 dB (1 dB steps)
Attack time: 10 ms - 10 s
Release time: 100 ms to 10 s
Delay Delay time: 0 - 682.6 ms (0.021 ms steps)
Matrix 12 × 8
Crosspoint Gain -∞ to 0 dB (1 dB steps)
Preset Memory 16
Auxiliary Function System Locking function
Control RS-232C, D-sub connector (9 pins), Remote control module (option)
Front Panel Section Preset memory recall key: 8
LCD screen, screen shift key (up/down/left/right), setting knob
Input level indicator: Dual color LED
Output level indicator: Dual color LED
Channel selector key: 12 (input channel selection)
8 (output channel selection)
Channel volume control: 1 (input channel selection)
1 (output channel selection)
Rear Panel Input module slot: 6 (input/output module slot: 2)
Output module slot: 2
Remote control module slot: 1
Operating Temperature +5℃ to +40℃
Finish Panel: Aluminum, hair-line finish, black
Others: Pre-coated steel plate, black, 30% gloss
Dimensions 482.6 (W) × 132.6 (H) × 320 (D) mm (excluding projection)
Weight 6.9 kg
Accessory Power cord (2 m) ……1, Rack mounting screw ……4,
Rack mounting bracket (preinstalled on the unit) ……2,
Module mounting screw (spare) ……4,
Blank panel (preinstalled on the module slot) ……9
[Note] When installing the unit, never block the intake vents provided in the unit's bottom near the rear.
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