Troubleshooting – Muxlab Stereo Hi-Fi Wall Balun, US User Manual

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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.

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

Plug one (1) balun into the stereo hi-fi audio output of the
audio source according to the color code of the RCA
connectors.

Plug the second balun into the stereo hi-fi audio input of the receiver at the remote end.

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.

Power-on the audio equipment and check the audio quality. 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 table describes some of the symptoms, probable causes and possible
solutions in respect to the installation of the Stereo Hi-Fi 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 Causes

Possible Solutions

Poor audio quality

EMI interference

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

Split pair

Ensure that the UTP pairs are not split and that
each pair of wires is twisted.

No audio

No power

Check your audio system for power.

Open circuit

Check wiring to ensure continuity.

Defective balun

Change Stereo Hi-Fi/Video Baluns for another
pair.

Audio phase
cancellation

Reversed wires

Check for straight-through wiring.

Audio weak

Distance specifications
exceeded

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