Manual

Chapter 2 - RB-SM1 Single & RB-SM2 Dual Stereo to Mono Converter
Redbox User Handbook 2-1
2. RB-SM1 Single & RB-SM2 Dual Stereo To
Mono Converter ……
2.1. Introduction
Fig 2-1: RB-SM1 & RB-SM2 Front Panel
The RB-SM1 consists of an independent converter that will produce a fully buffered
and balanced mono line output from a stereo input. The RB-SM2 consists of two
independent converters and will produce two fully buffered and balanced mono line
outputs from two stereo inputs.
All connections are on the rear panel. The XLR-3 inputs are electronically balanced
with an impedance of 20kΩ bridging. These can be wired unbalanced to accept an
output from domestic equipment.
The XLR-3 line output’s are electronically balanced with an output impedance of
<50Ω. The output’s can be wired unbalanced by grounding the non-phase signal,
allowing you to feed both balanced and unbalanced equipment.
Output gain adjustment using a pre-set potentiometer for both converters allows a
normalised mono output from domestic stereo equipment. The potentiometer is
accessible through the rear panel. An LED power indicator on the front panel displays
the power supply connection.
The rest of this manual will refer to the SM1 unless stated otherwise.