The RB-SM2 consists 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 20kohm 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 <50 ohm. The outputs can be wired
unbalanced by grounding the non-phase signal, allowing you to feed 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.
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Audio Specification
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+28dBu
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+28dBu
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20Hz to 20kHz +/- 0.1dB (600 ohm load, ref 1kHz)
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Adjustable 8dB loss to 18dB gain, ref. 0dBu in on L and R
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>66dB typically
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THD @ 1kHz +8dBu 0.01%
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-100dB unity gain ref +8dBu
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>20kohm balanced bridging
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<50ohm
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Connections
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4 x XLR 3 pin female (balanced, can be unbalanced)
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2 x XLR 3 pin male (balanced, can be unbalanced)
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Filtered IEC, switchable 110-120V, or 220-240V, fused, 6W max
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Physical Specification
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Nett: 1.05kg Gross: 1.5kg
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Raw: 28cm (W) x 10.8cm (D) x 4.2cm (H) Boxed: 36cm (W) x 20.5cm (D) x 6cm (H)
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Sonifex RB-SM2 Dual Stereo to Mono Converter datasheet