Manual
Table Of Contents
- Contents
- Figures
- Warranty
- Safety Information
- 1 RB-UL1 Single, RB-UL2 Dual & RB-UL4 Quad Stereo Unbalanced To Balanced Converters
- 2 RB-LU4 Quad Stereo Balanced To Unbalanced Converter
- 3 RB-BL2 Single & RB-BL4 Dual Bi-Directional Matching Converter
- 4 RB-PA2 Dual Stereo RIAA Phono Amplifier
- 5 RB-LI2 Stereo Line Isolation Unit
- 6 RB-PLI6 6 Way Mono Passive Line Isolation Unit
- 7 RB-DA6 & RB-DA6G 6 Way Stereo Distribution Amplifier
- 8 RB-DA4x5 4 Input 4 x 5 Output Distribution Amplifier/Mixer
- 9 RB-DDA6A 6 Way Stereo AES/EBU Digital Distribution Amplifier and RB-DDA6S 6 Way Stereo S/PDIF Dig
- 10 RB-DDA6W 6 Way Word Clock Distribution Amplifier
- 11 RB-HD1 Stereo Headphone Amplifier & RB-HD2 Dual Headphone Amplifier
- 12 RB-HD6 6 Way Headphone Distribution Amplifier
- 13 RB-DHD6 Digital 6 Way Headphone Distribution Amplifier
- 14 Connectors & Cabling
- Glossary
Redbox User Handbook No 2
27
System Block Diagram
Fig 8-2: RB-DA4x5 Block Diagram.
Rear Panel Connections and Operation
Inputs Outputs
Fig 8-3: RB-DA4x5 Rear Panel.
Audio Inputs 1-4
The XLR 3 pin sockets used for the audio inputs are electronically balanced and have
an impedance of 20kΩ bridging. They are routed to the switch matrix. Each XLR has the
following connections:
Pin 1: Screen
Pin 2: Phase
Pin 3: Non-phase
AUDIO DISTRIBUTION AMPLIFIERS - RB-DA4x5
Balanced XLR
Input 1
Gain
Balanced XLR
Input 2
Gain
Balanced XLR
Input 3
Gain
Balanced XLR
Input 4
Gain
Reference
Tone
Output 1
Switch Bank
Meter 2
Output
Gain
Output 1
Switch Bank
Meter 4
Output
Gain
Output 1
Switch Bank
Meter 1
Output
Gain
Output 1
Switch Bank
Meter 3
Output
Gain
Meter In 3
Meter Out 3
Meter 3
Meter In 1
Meter Out 1
Meter 1
Meter In 4
Meter Out 4
Meter 4
Meter In 2
Meter Out 2
Meter 2
AUDIO DISTRIBUTION
AMPLIFIERS
8