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
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12
HEADPHONE DISTRIBUTION AMPLIFIERS - RB-HD6
Conguring Insert Inputs/Parallel Outputs
On the main circuit board, you’ll see some jumpers (small black rectangles), the position of
which will dene whether a particular jack socket operates as an input or output.
The drawings below show the dierent jumper settings available. Each input/output can
be congured individually, so you could have three jacks set as inputs and three as outputs
if needed.
Input/Output 1 2 3 4 5 6
Jumpers
to Alter
Left JP1 & 2 JP5 & 6 JP9 & 10 JP13 & 14 JP17 & 18 JP21 & 22
Right JP3 & 4 JP7 & 8 JP11 & 12 JP15 & 16 JP19 & 20 JP23 & 24
Fig 12-4: RB-HD6 Jumper Assignments.
Fig 12-5: RB-HD6 Jumper Positions.
Once you’ve set up the jumpers, slide the circuit board back into the Redbox housing using
the slots along the inside edge of the metalwork as a guide. Replace the screws on the top,
bottom and rear panels of the RB-HD6.
Important Note : The screws provide earthing protection to the chassis and grounding
protection for CE approval – it is important that you reinsert all the screws provided.
Front Panel Connections and Controls
Fig 12-6: RB-HD6 Front Panel Controls.
Stereo Outputs 1-6 (Mono Outputs 1-6)
The outputs available on the front panel through ¼” stereo jack sockets are push-pull,
designed to drive 150 mW into 32Ω to 600Ω professional headphones. Each output is
individually buered.
Volume
Controls
Master
Volume Control
Headphone Outputs
HEADPHONE DISTRIBUTION
AMPLIFIERS