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
18
Redbox User Handbook No 2
MATCHING CONVERTERS - RB-LI2
Internal Jumpers
The unit has jumpers that are used to balance the output about ground. By default these are
not tted when the unit leaves the factory.
To get inside the RB-LI2, rst ensure that it has been disconnected from the mains power
and that the mains IEC lead to the unit has been removed. Observing anti-static precautions,
undo the four-crosshead screws on the back panel at the far left and far right of the panel
(2 at each end). Also undo the small brass screws, which hold the top and bottom panels to
the rear panel. The rear panel should slide backwards out of the unit together with the main
circuit board.
Fig 5-4: RB-LI2 Jumper Positions on the PCB.
Technical Specications
Audio Specication
Output Impedance: <150Ω
Frequency Response: 10Hz to 36kHz ±0.5dB
Common Mode Rejection: <64dB
Distortion: 0.5% THD @ 40Hz, ref +17dBu output
Noise: -100dB unity gain ref +8dB
Gain Range: -15dB to +13.5dB (28.5dB)
Connections
Inputs: 2 x XLR 3 pin female
Isolated Outputs: 2 x XLR 3 pin male
Loop Outputs: 2 x XLR 3 pin male
Fuse Rating: Anti-surge fuse 100mA 20 x 5mm (230VAC)
Anti-surge fuse 250mA 20 x 5mm (115VAC)
Equipment Type
RB-LI2: Stereo line isolation unit
Physical Specications
Dimensions (Raw): 28cm (W) x 10.8cm (D) x 4.2cm (H) (1U)
Dimensions (Boxed): 36cm (W) x 20.5cm (D) x 6cm (H)
Weight: Nett: 1.10kg Gross: 1.50kg
MATCHING CONVERTERS
5