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
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Redbox User Handbook No 2
Technical Specications
Audio Specications
Maximum Input Level: +28dBu
Maximum Output Level: +28dBu
Input Impedance (RCA) : >10kΩ unbalanced
Input Impedance (XLR) : >20kΩ balanced bridging
Output Impedance (RCA) : <50Ω
Output Impedance (XLR) : <50Ω
Distortion: 0.01% THD @ 1kHz, ref +8dBu output
Noise: -100dB, unity gain, ref +8dBu output
Common Mode Rejection: >66dB typically
Frequency Response: 20Hz to 20kHz ±0.1dB (600Ω load, ref 1kHz)
Gain Range: Unbalanced Output: -28dBu to +15dBu, ref -15dBu into
balanced XLR input
Gain Range: Balanced Output: -15dBu to +15dBu, ref -15dBu
into unbalanced RCA input
Connections
Inputs: 2 (4 on RB-BL4) x XLR 3 pin female (balanced),
2 (4 on RB-BL4) x RCA phono (unbalanced)
Outputs: 2 (4 on RB-BL4) x XLR 3 pin male (balanced),
2 (4 on RB-BL4) x RCA phono (unbalanced)
Mains Input: Filtered IEC, 110V-120V, or 220-240V switchable, fused,
6W maximum
Fuse Rating: Anti-surge fuse 100mA 20 x 5mm (230VAC)
Anti-surge fuse 250mA 20 x 5mm (115VAC)
Equipment Type
RB-BL2: Single stereo bi-directional matching converter
RB-BL4: Dual stereo bi-directional matching converter
Physical Specication
RB-BL2:
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: 1.0kg Gross: 1.4kg
RB-BL4:
Dimensions (Raw) 48cm (W) x 10.8cm (D) x 4.2cm (H) (1U)
Dimensions (Boxed) 53cm (W) x 20.5cm (D) x 6cm (H)
Weight Nett: 1.3kg Gross: 1.9kg
MATCHING CONVERTERS - RB-BL2 & RB-BL4
MATCHING CONVERTERS
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