2
1 Audio Distribution Amplifier - RB-DA6
Connections and Operation
Fig 1-3: RB-DA6 Rear Panel
Inputs (Left and Right)
The XLR-3 input connectors can take balanced professional levels, or
unbalanced by using the front panel gain controls, and by connecting the
non-phase to the signal ground. The input can be configured as either a
stereo input with six stereo outputs or a mono input with twelve outputs.
The XLR 3 pin input has the following connections:
Pin 1: Screen
Pin 2: Phase
Pin 3: Non-phase
Stereo Outputs 1-6 (Mono Outputs 1-12)
The XLR 3 pin outputs are electronically balanced, and can be wired
unbalanced. Each output is individually buffered so that a short circuit on
one output will not affect the others. They have the following connections:
Pin 1: Screen
Pin 2: Phase
Pin 3: Non-phase
Outputs
Inputs
Input Gain Control
The input gain on the RB-DA6 can be varied –8dB to 18db by adjusting the
pre-set potentiometers. These are accessible through the holes in the front
panel. The RB-DA6 has separate left and right master gain controls.
Stereo/Mono Operation
The mode of operation may be switched between a stereo distributed
channel to 6 stereo channels, and a mono channel to 12 mono channels, by
the push button on the front panel, which is recessed to prevent accidental
switching.
