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
49
Volume
Controls
Sync & Power LED
Headphone Outputs
13 RB-DHD6 Digital 6 Way Headphone Distribution Amplier
Fig 13-1: RB-DHD6 Front Panel.
The RB-DHD6 digital 6 way headphone distribution amplier is a 1U rack-
mount which receives a digital input signal, as either AES/EBU or S/PDIF and
converts it to 6 individually buered, jack-plug, headphone outputs, each with
their own volume control.
Useful for connection to digital mixing desks, digital routers and matrices, the RB-DHD6
connects directly to an AES/EBU or S/PDIF output to provide the highest quality audio
directly to the headphones. The input connectors consist of a single balanced XLR-3 for the
AES/EBU input and a single unbalanced phono connector for the S/PDIF input.
A button located on the rear panel is used to select either the AES/EBU, or S/PDIF, input and
de-emphasis on the output can be controlled via dipswitch. If de-emphasis is selected, the
RB-DHD6 will decode 50/15µs emphasis when indicated by certain channel status bits in the
incoming digital audio data.
When operating, the front panel power LED ashes red and amber whenever the unit is not
synchronised to the incoming digital signal.
System Block Diagram
Fig 13-2: RB-DHD6 System Block Diagram.
Front Panel Indicators & Controls
AUDIO DISTRIBUTION AMPLIFIERS - RB-DHD6
Introduction
AUDIO DISTRIBUTION
AMPLIFIERS
13
AES/EBU Volume
Control
Stereo Jack
Output
X6
S/PDIF
Digital
Input
Audio
Output
Amp
AES
Receiver
DAC
Fig 13-3: RB-DHD6 Front Panel Controls.