sonifex cm lux1 1

The Sonifex CM-LUX1 allows the connection of a stereo balanced line input via 2 x female XLRs to a stereo unbalanced output on phono connectors.

It is transformer balanced, with a 2:1 ratio, so 6dB of attenuation is added to the input to help interface with the lower signal levels associated with consumer outputs.

This unit is a passive version of the RB-LU4 (though only 1 x stereo channel), and provides you with an alternative to having to interface a balanced output to an unbalanced input via specialist cables (either by shorting the non-phase to ground or disconnecting it).

It is particularly useful where a shared balanced audio feed needs interfacing to an unbalanced input on one or more pieces of equipment. Using a CM-LUR1 or CM-LUX1 galvanically isolates the audio, allowing you to connect via phono cables to an unbalanced input without compromising the distributed feed.

cm-lux1 Diagram

Audio Specification

Input/Output Level Ratio:2:1
Input/Output Impedance Ratio:4:1
Max Input Level:+28dBu
Max Output Level:+22dBu
Frequency Response:20Hz to 20kHz, +0/-0.5dB
Noise:<-115dBu A-wgtd
Distortion Ref +8dBu (Output):<0.01%
Common Mode Rejection:>80dB


Balanced Line Input::2 x female XLRs
Unbalanced Line Output:2 x RCA phono connectors

Equipment Type

CM-LUX1:Balanced to unbalanced audio converter, XLR input

Physical Specification

Dimensions (Raw):7.7cm (W) x 8.3cm (D) x 4.2cm (H) 3.0” (W) x 3.3” (D) x 1.7” (H)
Dimensions (Boxed):12.7cm (W) x 22.9cm (D) x 7.6cm (H) 5” (W) x 9” (D) x 3” (H)
Weight:Nett: 0.22kg Gross: 0.33kg Nett: 0.49lbs Gross: 0.73lbs
BW Price Guarantee

(Subject to conditions)

Sonifex CM-LUX1


Tech Support

2-Year Warranty


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