Rb-Ul2 Dual Stereo Unbalancedto Balanced Converters; Introduction; System Block Diagram; Rear Panel Connections And Operation - Sonifex Redbox Series User Handbook Manual

2 RB-UL2 Dual Stereo Unbalanced to Balanced Converters

Introduction

Fig 2-1: RB-UL2 Front Panel

The RB-UL2 dual stereo unit is used for interfacing domestic, or semi-pro
unbalanced equipment to professional balanced line levels.
All connections are on the rear panel. The RCA unbalanced inputs have an
The RB-UL2 has four inputs & outputs.
The output gain can be individually adjusted for left and right channels
by using pre-set potentiometers accessible through the rear panel. A LED
power indicator on the front panel displays the power supply connection.

System Block Diagram

Phono
Left Input
Consumer/
Unbalanced
Phono
Right Input
Consumer/
Unbalanced

Fig 2-2: RB-UL2 System Block Diagram

Rear Panel Connections and Operation

RCA Phono Inputs (Left and Right)
The stereo left and right RCA inputs are unbalanced and have an impedance
connectors.
Outputs (Left and Right)
Pin 1: Screen
Pin 2: Phase
Pin 3: Non-phase
Gain
Gain
Matching Converters - RB-UL2
Left Output
Professional/Balanced
Right Output
Professional/Balanced
2
3