Quick-Start Guide

© MuxLab Inc.
Installation
One (1) pair of baluns supports four (4) mono unbalanced analog audio channels or two
(2) stereo audio channels via a Cat 5E/6 twisted pair. To install the baluns, perform the
following steps:
1. Identify the pin configuration of the baluns. Four (4) twisted pairs are required if
all four (4) signals are transmitted. The pin configuration follows the EIA/TIA
568A/B standard. The Quad Audio Balun is reverse polarity sensitive. Please
ensure that wiring is straight-through (Ring to Ring, Tip to Tip).
2. At the audio source end, connect a Quad Audio Balun to the audio output using the
appropriate number of RCA cables.
3. At the audio receiver end, connect a Quad Audio Balun to the audio input using the
appropriate number of RCA cables.
4. Complete the connection between the two baluns, using standard Cat 5E/6 twisted
pair cable and connecting hardware, terminated on RJ45 plugs at both ends. Ensure
that there are no split pairs or taps.
5. Power-on the audio equipment. Check the sound quality and refer to the
troubleshooting table below if the sound quality is unsatisfactory. The following
diagram shows a typical installation.
Troubleshooting
The following table describes some of the symptoms, probable causes and possible
solutions in respect to the installation of the Quad Audio Balun:
Symptom Probable Cause Possible Solutions
EMI interference
Check that wiring is not too close to transformers
and ballasts.
Poor Quality Audio
Split pair
Check if the UTP pairs are split and correct.
Each signal pair must be twisted.
Power-off Check power supply.
Open contact Check wiring to ensure continuity.No Audio
Defective Audio Balun Change Audio Baluns for another pair.
Distance exceeds specs
Check DC loop resistance and verify if distance
spec is exceeded.
Reduce cable length or eliminate high-loss
components.
Weak Audio
Lower grade UTP cable
is introducing high
signal losses.
Use signal repeater for extended distance.
Replace cable by higher grade.
If you still cannot diagnose the problem, please call MuxLab Customer Technical
Support at 877-689-5228 (toll-free in North America) or ([phone]
(International).