Audio Interfaces - Redbox - Stereo To Mono Converters
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The RB-SM2 Dual Stereo to Mono Converter.
RB-SM2 Dual Stereo to Mono Converter
The RB-SM2 is a dual version of the RB-SM1, consisting of two independent converters which will produce two fully buffered and balanced mono line outputs from two stereo inputs.
All connections are on the rear panel. The XLR-3 inputs are electronically balanced with an impedance of 20kΩ bridging. These can be wired unbalanced to accept an output from domestic equipment.
The XLR-3 line outputs are electronically balanced with an output impedance of <50Ω. The outputs can be wired unbalanced by grounding the non-phase signal, allowing you to feed both balanced and unbalanced equipment.
Output gain adjustment using pre-set potentiometers for both converters allows a normalised mono output from domestic stereo equipment. The potentiometers are accessible through the rear panel.
RB-SM2 Block Diagram.
Technical Specification For RB-SM2 |
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Audio Specification |
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| Maximum Input Level: | +28dBu |
| Maximum Output Level: | +28dBu |
| Input Impedance: | >20kΩ balanced bridging |
| Output Impedance: | <50Ω balanced |
| Frequency Response: | 20Hz to 20kHz ±0.1dB (600Ω load, ref 1kHz) |
| Gain Range: | Adjust -8dB to +18dB gain, ref. 0dB input on L and R |
| Common Mode Rejection: | >66dB typically |
| Distortion: | 0.01% THD @ 1kHz, ref +8dBu output |
| Noise: | -100dB, unity gain, ref +8dBu output |
Connections |
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| Inputs: | 4 x XLR 3 pin female (Balanced, can be unbalanced) |
| Outputs: | 2 x XLR 3 pin male (Balanced, can be unbalanced) |
| 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-SM2: | Dual stereo to mono converter |
Physical Specification |
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| Dimensions (Raw): | 28cm (W) x 10.8cm (D) x 4.2cm (H) (1U) 11” (W) x 4.3” (D) x 1.7” (H) (1U) |
| Dimensions (Boxed): | 36cm (W) x 20.5cm (D) x 6cm (H) 14.2” (W) x 8” (D) x 2.4” (H) |
| Weight: | Nett: 1.05kg Gross: 1.50kg Nett: 2.3lbs Gross: 3.3lbs |
