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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Technical Specications
Audio Specications RB-HD1 & RB-HD2:
Maximum Input Level: +28dBu
Input Impedance: >20kΩ balanced bridging (main)
Input Gain Range: -12dB to +20dB (pre-set pots) (RB-HD2)
Output Level: Drives 150 mW into 32Ω to 600Ω headphones
Volume Control: -80dB to +11dB gain
Mono Mix Input Gain Range: 22dBu (RB-HD1)
Connections
RB-HD1:
Main Stereo Input: 2 x XLR 3 pin female (Balanced, can be wired unbalanced)
Mono Mix Input: 1 x XLR 3 pin female (Balanced, can be wired unbalanced)
Outputs: 2 x ¼” (6.35mm) A/B gauge 3-pole stereo jack sockets
Remote Control: 9-pin D-type socket
Mains Input: Filtered IEC, 110V-120V, or 220-240V switchable, fused,
9W maximum
Fuse Rating: Anti-surge fuse 100mA 20 x 5mm (230VAC)
Anti-surge fuse 250mA 20 x 5mm (115VAC)
RB-HD2:
Main Stereo Input 2 x XLR 3 pin female (Balanced, can be wired unbalanced)
Outputs 2 x ¼” (6.35mm) A/B gauge 3-pole stereo jack sockets
Mains Input Filtered IEC, 110V-120V, or 220-240V, fused, switchable,
9W maximum
Fuse Rating: Anti-surge fuse 100mA 20 x 5mm (230VAC)
Anti-surge fuse 250mA 20 x 5mm (115VAC)
Equipment Type
RB-HD1: Stereo headphone amplier
RB-HD2: Dual stereo headphone amplier
Physical Specications
RB-HD1:
Dimensions (Raw): 48cm (W) x 10.8cm (D) x 4.2cm (H) (1U)
Dimensions (Boxed): 53cm (W) x 20.5cm (D) x 6cm
Weight: Nett: 1.35kg Gross: 2.0kg
RB-HD2:
Dimensions (Raw): 48cm (W) x 10.8cm (D) x 4.2cm (H) (1U)
Dimensions (Boxed): 53cm (W) x 20.5cm (D) x 6cm
Weight: Nett: 1.35kg Gross: 2.0kg
HEADPHONE DISTRIBUTION AMPLIFIERS-RB-HD1 & RB-HD2
HEADPHONE DISTRIBUTION
AMPLIFIERS
11