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© MuxLab Inc. 2011

 

2.

 

To install the balun in a single back box, choose a back box 
with a depth of 40 mm or more. Connect the RJ45 plug into 
the rear of the balun. Secure the balun with the 2 front screws. 

3.

 

Plug one (1) balun into the stereo audio outputs of the video 
source(s) according to the color code of the RCA connectors. 

4.

 

Plug the second balun into the stereo audio inputs of the receiver(s) at the remote end. 

5.

 

Complete the connection between the two baluns, using standard Cat 5E/6 twisted pair 
cable and connecting hardware, terminated by RJ45 plugs at both ends. Ensure that 
there are no split pairs or taps. 

6.

 

Power-on the audio equipment. The audio should be clear within the maximum 
specified distances. The following diagram shows a typical configuration. 

 

7.

 

To mount the wall plate balun in a gang plate, you must first remove the 4 rear screws, 
then remove the balun. Next unclip the balun front plastic panel. 

 

 

 

8.

 

Clip the front plastic panel to a standard gang plate and secure the 
balun using its 4 screws. Multiple wall baluns can be mounted side 
by side on a gang plate. 

 

Front view  

Side view 

Rear view 

Troubleshooting 

The following tables describe some of the symptoms, probable causes and possible 
solutions in respect to the installation of the Quad Audio Balun. If you still cannot 
diagnose the problem, please call MuxLab Customer Technical Support at 877-689-
5228 (toll-free in North America) or (+1) 514-905-0588 (International). 

Symptom 

Probable Cause 

Possible Solutions 

Poor Quality Audio 

EMI interference 

Check that wiring is not too close to transformers 
and ballasts. 

Split pair 

Check if the UTP pairs are split and correct. 
Each signal pair must be twisted. 

No Audio 

Power-off 

Check power supply. 

Open contact 

Check wiring to ensure continuity. 

Defective Audio Balun  Change Audio Baluns for another pair. 

Weak Audio 

Distance exceeds specs 

Check DC loop resistance and verify if distance 
spec is exceeded. 
Reduce cable length or eliminate high-loss 
components. 

Lower grade UTP cable 
is introducing high 
signal losses. 

Use signal repeater for extended distance. 
Replace cable by higher grade. 

 
 

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