Sonifex CM-LUX1

Balanced to Unbalanced Audio Converter

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.

SKU: 106038

225

Description

Sonifex CM-LUX1

CM-LUX1 Balanced to Unbalanced Audio Converter

This product 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.

Block Diagram

cm-lux1 Diagram

Analogue Inputs

The stereo analogue input is on two female 3 pin XLR connectors with the following pin assignments:
Pin 1: 0V Common
Pin 2: Phase
Pin 3: Non Phase

RCA Phono Analogue Outputs

This unit uses a stereo unbalanced line output on an RCA phono connector with the following connections:

Pin Type Connection
White Tip: Left
White Screen: Ground
Red Tip: Right
Red Screen: Ground

CM-LUX1 Technical Specification

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

Connections

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