Description
Sonifex REDBOX RB-DHD6 Digital 6-Way Stereo Headphone Distribution Amplifier.
The RB-HD6 headphone distribution amplifier is a 1U rack-mount which distributes stereo audio to up to 6 different sets of headphones, or can be used as 6 independent headphone amplifiers, each with their own input and volume control. A typical application might be to provide common headphone feeds for guests in a radio studio, with a separately derived feed, perhaps including talk-back, for the presenter.
The main stereo input is on XLR-3 connectors on the rear panel which are electronically balanced and can be wired unbalanced. A stereo/mono input select switch on the rear panel sums left and right outputs to provide a mono feed to the headphones. The unit can receive an override audio signal via a jack socket for each output channel. Plugging in the jack plug will divert the headphone output from the master audio signal to the audio present on the jack plug.
The override audio inputs can also be individually configured as parallel outputs of the front sockets, by setting internal jumpers. The master volume control adjusts overall level of the 6 outputs and does not affect the level of channels using the override inputs. The master volume can be disabled by internal jumpers.
| Technical Specification For RB-DHD6 | |
| Audio Specification | |
| Output Level: | Drives 150mW into 32Ω to 600Ω headphones |
| Dynamic Range: | >100dB |
| Input Impedance: | 110Ω ±20% AES/EBU 75Ω ±15% S/PDIF |
| Max Output Level: | 12dBu unbalanced |
| Headphone Gain Range: | -80dBu to 12dBu |
| Sample Frequency Range: | 30kHz-100kHz |
| Connections | |
| Digital Inputs: | 1 x AES/EBU XLR 3 pin female, 1 x S/PDIF RCA phono |
| Headphone Outputs: | 6 x ¼” (6.35mm) A/B-gauge 3-pole stereo jack sockets |
| Mains Input: | Filtered IEC, 110V-120V, or 220-240V, fused, 10W max |
| Fuse Rating: | Anti-surge fuse 100mA 20 x 5mm (230VAC) Anti-surge fuse 250mA 20 x 5mm (115VAC) |
| Operational Controls | |
| De-emphasis On/Off: | DIP switch selection |
| Digital Input Select: | AES/EBU or S/PDIF, via push-switch |
| Equipment Type | |
| RB-DHD6: | Digital 6 way stereo headphone distribution amplifier |
| Physical Specification | |
| Dimensions (Raw): | 48cm (W) x 10.8cm (D) x 4.2cm (H) (1U) 19” (W) x 4.3” (D) x 1.7” (H) (1U) |
| Dimensions (Boxed): | 58.5cm (W) x 22.5cm (D) x 7cm (H) 23” (W) x 8.9” (D) x 2.8” (H) |
| Weight: | Nett: 1.6kg Gross: 2.2kg Nett: 3.5lbs Gross: 4.8lbs |
- Discription
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Sonifex REDBOX RB-DHD6 Digital 6-Way Stereo Headphone Distribution Amplifier.
The RB-HD6 headphone distribution amplifier is a 1U rack-mount which distributes stereo audio to up to 6 different sets of headphones, or can be used as 6 independent headphone amplifiers, each with their own input and volume control. A typical application might be to provide common headphone feeds for guests in a radio studio, with a separately derived feed, perhaps including talk-back, for the presenter.
The main stereo input is on XLR-3 connectors on the rear panel which are electronically balanced and can be wired unbalanced. A stereo/mono input select switch on the rear panel sums left and right outputs to provide a mono feed to the headphones. The unit can receive an override audio signal via a jack socket for each output channel. Plugging in the jack plug will divert the headphone output from the master audio signal to the audio present on the jack plug.
The override audio inputs can also be individually configured as parallel outputs of the front sockets, by setting internal jumpers. The master volume control adjusts overall level of the 6 outputs and does not affect the level of channels using the override inputs. The master volume can be disabled by internal jumpers.
- Specifications
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Technical Specification For RB-DHD6 Audio Specification Output Level: Drives 150mW into 32Ω to 600Ω headphones Dynamic Range: >100dB Input Impedance: 110Ω ±20% AES/EBU 75Ω ±15% S/PDIF Max Output Level: 12dBu unbalanced Headphone Gain Range: -80dBu to 12dBu Sample Frequency Range: 30kHz-100kHz Connections Digital Inputs: 1 x AES/EBU XLR 3 pin female,
1 x S/PDIF RCA phonoHeadphone Outputs: 6 x ¼” (6.35mm) A/B-gauge 3-pole stereo jack sockets Mains Input: Filtered IEC, 110V-120V, or 220-240V, fused, 10W max Fuse Rating: Anti-surge fuse 100mA 20 x 5mm (230VAC)
Anti-surge fuse 250mA 20 x 5mm (115VAC)Operational Controls De-emphasis On/Off: DIP switch selection Digital Input Select: AES/EBU or S/PDIF, via push-switch Equipment Type RB-DHD6: Digital 6 way stereo headphone distribution amplifier Physical Specification Dimensions (Raw): 48cm (W) x 10.8cm (D) x 4.2cm (H) (1U)
19” (W) x 4.3” (D) x 1.7” (H) (1U)Dimensions (Boxed): 58.5cm (W) x 22.5cm (D) x 7cm (H)
23” (W) x 8.9” (D) x 2.8” (H)Weight: Nett: 1.6kg Gross: 2.2kg
Nett: 3.5lbs Gross: 4.8lbs
