Audio Interfaces - Redbox - Matching Converters
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The RB-UL4 Quad Stereo Unbalanced to Balanced Converter.
RB-UL4 Quad Stereo Unbalanced to Balanced Converter
The RB-UL4 is a 1U rack-mount quad stereo unit for interfacing domestic or semi-professional unbalanced equipment to professional balanced line levels.
All connections are on the rear panel. The eight RCA unbalanced inputs have an impedance of 10kΩ and
are routed to eight 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.
RB-UL4 Block Diagram.
Technical Specification For RB-UL4 |
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Audio Specification |
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| Maximum Input Level: | +28dBu |
| Maximum Output Level: | +28dBu |
| Input Impedance: | >10kΩ |
| Output Impedance: | <50Ω |
| Distortion: | 0.01% THD @ 1kHz, ref +8dBu output |
| Noise: | -100dB, unity gain, ref +8dBu output |
| Frequency Response: | 20Hz to 20kHz ±0.1dB (600Ω load, ref 1kHz) |
| Gain Range: | Balanced output : -15dBu to +15dBu, ref -15dBu into unbalanced RCA input |
Connections |
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| Inputs: | 8 x RCA phono (Unbalanced) |
| Outputs: | 8 x XLR 3 pin male (Balanced) |
| Mains Input: | Filtered IEC, switchable 110-120V, or 220-240V, fused, 6W max |
| Fuse Rating: | Anti-surge fuse 100mA 20 x 5mm (230VAC) Anti-surge fuse 250mA 20 x 5mm (115VAC) |
Equipment Type |
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| RB-UL4: | Quad stereo unbalanced to balanced converter |
Physical Specification |
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| 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: 1.3kg Gross: 1.9kg Nett: 2.9lbs Gross: 4.2lbs |
