Handbook

Table Of Contents
32
Redbox User Handbook No 3
Rear Panel Connections and Operation
Fig 5-3: RB-MA1 Rear Panel.
Fig 5-4: RB-MA2 Rear Panel.
Mic Inputs
The XLR 3 pin sockets used for the microphone are electronically balanced. They have the
following connections:
Pin 1: Screen
Pin 2: Phase
Pin 3: Non-phase
Input Gain
Recessed pre-set potentiometers allow for adjustment of the gain of the microphone
inputs. This provides a gain range of 36dB to 75dB which enables the use of dynamic and
powered microphones. Connect the mic input and adjust the gain until the line output is at
the level that you need.
MICROPHONE AMPLIFIERS & LIMITERS - RB-MA1 & RB-MA2
Phantom powerInput Gain
Control
Mic Input LF Filter Output
Input Gain
Control
Phantom Power
Switch
Mic Input
LF Filters Stereo Outputs
MICROP HONE AMPLIF IERS
& LIMITERS
5