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Troubleshooting – Muxlab Quad Audio Wall Balun, US User Manual

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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. Place a Decora® faceplate (not included) and secure with the

2 front screws.

4. Plug one (1) balun into the stereo audio outputs of the audio

source(s) according to the color code of the RCA connectors.

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

6. 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.

7. Power-on the audio equipment. The audio should be clear within the maximum

specified distances. The following diagram shows a typical configuration.

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.