Manual
Table Of Contents
- Analogue Redbox User Handbook rev 1.92
- Contents
- Figures
- Warranty, Safety & Installation Information
- RB-MA1 Single & RB-MA2 Dual Microphone Amplifiers
- RB-SM1 Single & RB-SM2 Dual Stereo To Mono Converter
- RB-UL1 Single, RB-UL2 Dual & RB-UL4 Quad Stereo Unbalanced
- RB-LU4 Quad Stereo Balanced To Unbalanced Converter
- RB-BL2 Single & RB-BL4 Dual Bi-Directional Matching Converte
- RB-SL2 Twin Mono, or Stereo, Limiter
- RB-DA6 6 Way Stereo Distribution Amplifier
- RB-HD1 Stereo Headphone Amplifier
- RB-HD6 6 Way Stereo Headphone Distribution Amplifier
- RB-SD1 Silence Detection Unit
- RB-PMX4 10 Input, 4 Output Analogue Preset Mixer
- RB-LI2 Stereo Line Isolation Unit
- RB-PLI6 6 Way Mono Passive Line Isolation Unit
- RB-SS10 10 Way Stereo Analogue Source Selector/Mixer
- RB-LC3 3 Way Light/Power Controller
- Glossary
- Connectors And Cabling
- Index
Chapter 12 - RB-LI2 Stereo Line Isolation Unit
Redbox User Handbook 12-1
12. RB-LI2 Stereo Line Isolation Unit
12.1. Introduction
Fig 12-1: RB-LI2 Front Panel
The RB-LI2 stereo line isolation unit is used to isolate audio signals from inter area
ground hum loops, which could be caused by equipment being powered by different
mains power supplies, or different phases on the same supply. The input and output
are connected together through a transformer, which has internal jumpers allowing
the outputs to be balanced about ground.
There is also a loop-through output, so that the RB-LI2 can be inserted into a line,
forming a transformer balanced distribution point.
This unit is useful where audio is required to be driven over a relatively long length of
cable. By isolating the signal using transformers, ground loop currents that can be
present in non-isolated signals, are eradicated completely.
12.2. System Block Diagram
Fig 12-2: RB-LI2 System Block Diagram
Jumper
X2