Sonifex RB-DA24MD 24 Way Mono Audio Distribution Amplifier
24 Way Mono Distribution Amp With Input Gain Control
MPN: RB-DA24MD SKU: RB-DA24MD
The RB-DA24MD is a 1U rack mount high performance 24 way audio distribution amplifier. It has 2 inputs which can be each individually routed to 12 outputs, or mixed and routed to all 24 outputs. The inputs can be configured as either dual mono, input 1 routed to outputs 1-12 and input 2 routed to outputs 13-24, or mixed-mono, inputs 1 and 2 mixed at a pre-set level and routed to all 24 outputs. When set to mixed-mono operation there are 3 different output mix level modes, enabled by altering internal jumpers, providing -6dB, -3dB or 0dB adjustment of the output.
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The RB-DA24MD is a 1U rack mount high performance 24 way audio distribution amplifier. It has 2 inputs which can be each individually routed to 12 outputs, or mixed and routed to all 24 outputs. The inputs can be configured as either dual mono, input 1 routed to outputs 1-12 and input 2 routed to outputs 13-24, or mixed-mono, inputs 1 and 2 mixed at a pre-set level and routed to all 24 outputs. When set to mixed-mono operation there are 3 different output mix level modes, enabled by altering internal jumpers, providing -6dB, -3dB or 0dB adjustment of the output.
The XLR inputs and D-type outputs are electronically balanced and can be wired unbalanced. Each output is individually buffered so that a short circuit on one won’t affect the others. Each output is also protected against connection to both POE (power over Ethernet) and phantom power circuits.
The RB-DA24MD has master gain controls for both input 1 and input 2 which are pre-set potentiometers accessible through the rear panel. These controls allow the gain to be adjusted from -15dB to +15dB, useful for normalising consumer to professional signals and vice versa. An LED power indicator on the front panel shows that the unit is powered.
A 125Hz 6dB per octave roll off filter is activated by a push switch on the rear panel. When selected the filter is the applied to both inputs.
Audio Specification
- Input impedance: >20kΩ bridging
- Output impedance: <50Ω
- Maximum Input Level: +28dBu
- Maximum Output Level: +28dBu
- Frequency Response: 20Hz to 20kHz ±0.1dB (600Ω load, ref 1kHz)
- Gain Range: Adjustable -15dB loss to +15dB gain
- Common Mode Rejection: >66dB typically
- LF Roll Off Filter : 125Hz at 6dB/octave
- Distortion: 0.01%THD @ 1kHz, red + 8dBu output
- Noise: -100dB unity gain, ref +8dBu output
Connections
- Inputs: 2 x XLR 3 pin female (balanced)
- Outputs: 2 x 25 way D-type plug (balanced, can be unbalanced)
- Mains Input: Filtered IEC, switchable 110-120V, or 220-240V, fused, 6W max
- Fuse Rating: Anti-surge fuse 100mA 20 x 5mm (230VAC) Anti-surge fuse 250mA 20 x 5mm (115VAC)
Equipment Type
- RB-DA24MD: 24 way mono distribution amplifier
Physical Specification
- Dimensions (Raw): 48cm (W) x 15.8cm (D) x 4.2cm (H) (1U)
19” (W) x 6.2” (D) x 1.7” (H) (1U) - Dimensions (Boxed): 58.5cm (W) x 27.4cm (D) x 10.8cm (H)
23” (W) x 8.9” (D) x 2.8” (H) - Weight: Nett: 1.6kg Gross: 2.2kg
- Nett: 3.5lbs Gross: 4.8lbs
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