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
9
3 RB-BL2 Single & RB-BL4 Dual Bi-Directional
Matching Converter
Introduction
Fig 3-1: RB-BL2 Front Panel.
Fig 3-2: RB-BL4 Front Panel.
The RB-BL2 is a bi-directional stereo unit for interfacing domestic, or semi-pro unbalanced
equipment to professional balanced line levels, and vice-versa. The RB-BL4 has dual bi-
directional stereo capability.
All connections are on the rear panel. The XLR-3 electronically balanced inputs have an
impedance of 20kΩ bridging and are routed to unbalanced RCA (phono) outputs with an
output impedance of <50Ω.
The RCA unbalanced inputs have an impedance of 10kΩ bridging and are routed to
balanced XLR-3 outputs with an output impedance of <50Ω.
The output gain can be individually adjusted for left and right channels by using pre-set
potentiometers accessible through the rear panel. An LED power indicator on the front
panel displays the power supply connection.
MATCHING CONVERTERS - RB-BL2 & RB-BL4
MATCHING CONVERTERS
3