Description
SONIFEX REDBOX DISTRIBUTION AMPLIFIERS - Analogue audio
This range of rack mounting distribution amplifiers with separately buffered, electronically balanced outputs now offers models with six stereo, or twelve mono, outputs and a four-input mixing-matrix design with four groups of five outputs.
All models are housed in red-anodised aluminium cases with apertures for fixing screws, they can be attached to any flat surface, or rack-mounted from the front with the standard front panels, or in reverse, with the rear panel facing out of the rack, using accessory panels.
RB-DA6 Distribution Amplifier
A multi-function distribution amplifier offering either six-way stereo, dual six-way mono, or twelve-way mono operation. There are two inputs, which may be fed with dual mono sources or a single stereo source. Each input feeds six outputs. Alternatively, one mono input can be distributed to twelve outputs.
The front panel has a power indicator, two pre-set input gain controls and a recessed switch to select mono or stereo operation.
All connections are on the rear panel. There are two inputs and six pairs of outputs, using XLR3 connectors. All audio connections may be wired balanced, or unbalanced, without loss of level, for use with domestic equipment. Power is connected using an IEC inlet, which has an associated fuse and voltage selector switch.
Input: +28dBu maximum, 20kohms, balanced. Common-mode rejection: Greater than 66dB. Gain: -8dB to +18dB, adjustable separately for each input. Response: 20Hz to 20kHz +/- 0.1dB. Distortion: 0.01% THD, 1kHz, +8dBu. Noise: -100dB, unity gain, +8dBu output. Output: +28dB maximum, 50 ohms, balanced. Power source: 110-120V or 220-240V AC 6W maximum, switchable, fused, IEC Inlet. Dimensions: 1U rack mounting, 108mm deep. Weight: 1.3kg.
Included accessories: Handbook and IEC AC power cable. UK 13A plug.
Optional accessories: The RB-RK3 (1U) rear-panel kit reverse mounts the unit in a 19" rack.
RB-DA6G Distribution Amplifier
Based on the RB-DA6 (see above), this variant has twelve separate output gain-adjustment trimmers on the front panel.
Specifications and accessories: As RB-DA6.
SONIFEX RB-DA4x5 Distribution Amplifier/Mixer
This model has four mono inputs, and four groups of five outputs. All inputs and outputs can be wired balanced, or unbalanced, without loss of level, for use with domestic equipment. Each output has a separate buffer amplifier so that loading or a short-circuit on one output of a group does not effect the others.
On the front panel there are four, tri-colour LED audio presence indicators. These indicate either the input signals or the level of the output groups, selected by a single switch. A removable panel conceals four gain trimmers for inputs and four for output level. Miniature switches configure the internal routing; each of the four output groups is fed from a mix of the four input signals or a test tone signal.
The rear has four XLR-3 input connectors and four 15-pin, male D-Sub connectors, one for each group of outputs, an IEC AC power inlet and fuse.
Specification is similar to the RB-DA6 except the following. Power consumption: 9W maximum. Depth: 158mm. Weight: 1.6kg.
Included accessories: Handbook and IEC AC power cable. UK 13A plug.
Optional accessories: The RB-RK3 (1U) rear-panel kit reverse mounts the unit in a 19" rack.