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
26
Redbox User Handbook No 2
8 RB-DA4x5 4 Input 4 x 5 Output Distribution Amplier/Mixer
Introduction
Output
Gain
Controls
Input
Gain
Controls
Input/
Output
Levels
Input
Selectors
Fig 8-1: RB-DA4x5 Front Panel.
The RB-DA4x5 is a 1U rack-mount combined distribution amplier and mixer. It has 4
mono analogue audio inputs on female XLR and 4 groups of 5 outputs on 15 way D-type
connectors. Each output group has a ve way front-panel DIP switch assigned to it which is
used to select the input(s) to send to the output group. This enables each of the four inputs,
and a 1kHz 0dBu tone, to be mixed to the output group.
The inputs and outputs are electronically balanced and can be wired unbalanced. Each
input has adjustable gain using a preset potentiometer, providing a gain range of -8dB to
+18dB. Each output is individually buered so that a short circuit on one output will not
aect the others. The output gain of each group can similarly be adjusted between -8dB and
+18dB using preset potentiometers.
The DIP switch settings and gain controls are recessed beneath a front-mounting screw-on
cover so that settings can not be accidentally altered, for secure applications. Four bright
front-panel signal present LEDs show the levels of either the inputs or the output groups by
pressing the AUDIO PRESENCE button. The LEDs will show green illumination from -12dBu
through to 0dBu, amber from 0dBu through to +6dBu and red for inputs and outputs at
+6dBu and over.
AUDIO DISTRIBUTION AMPLIFIERS - RB-DA4x5
AUDIO DISTRIBUTION
AMPLIFIERS
8