Muxlab Quad Audio Balun User Manual

Specifications

Environment
Devices

Transmission
Bandwidth
Peripherals’ Impedance
Insertion Loss
Common Mode Rejection Ratio
THD
Maximum Input Level
Impedance Transformation Ratio
Cable: Cat 5E UTP/STP

Unbalanced In/ Out Cable
Ground Loop Isolation
Connectors
Pin Configuration

Max. Distance:
Cat 5E/6 UTP/STP
Temperature

Enclosure
Weight
Dimensions
Warranty
Order Information

Unbalanced line-level analog audio.
DVD players, audio receivers, audio amplifiers and
audio mixers, audio matrix switchers and other
unbalanced line-level audio equipment.
Transparent to the user
20 Hz to 20 kHz
Source 100 Ω Mx, Receiver 10 kΩ min.
Less than 2 dB per pair over the frequency range
Greater than 60 dB at 1 kHz
Less then 0.007% @ 1 kHz

1.1 Vp-p
Single unit: 4:1 (source: line)
24 AWG or lower solid copper twisted pair wire
Impedance: 100 ohms at 1 MHz
Maximum capacitance: 20 pf/ft
Attenuation: 6.6 dB/1,000 ft at 1 MHz
Shielded, coaxial
Range of +/-50VDC
Four (4) RCA receptacles for audio, one (1) RJ45 jack

Audio 1: Pins 7(R) & 8(T)
Audio 2: Pins 3(R) & 6(T)
Audio 3: Pins 4(R) & 5(T)
Audio 4: Pins 1(R) & 2(T)

3250 ft (1 km)

Operating: 0° to 55°C
Storage: -20° to 85°C
Humidity: Up to 95% non-condensing
Fire retardant plastic

3.6 oz (103 g)

2.40” x 2.25” x 1.00” (6.10 x 5.72 x 2.54 cm)
Lifetime
500033 Quad Audio Balun

Quad Audio Balun

500033

Quick Installation Guide

Overview

The Quad Audio Balun allows up to four (4) analog line audio signals to be transmitted
via an unshielded twisted pair (UTP) cable in a point-to-point connection. Used in pairs,
the Quad Audio Balun eliminates up to four (4) coaxial cables, allowing audio-video
equipment to be connected via a space-efficient and cost-effective Category 5E/6
twisted pair cable and supports Hi-Fi audio signal transmission. The Quad Audio Balun
also works in conjunction with other MuxLab analog audio baluns such as the 500019.

8495 Dalton Road, Mount Royal, Quebec, Canada. H4T 1V5

Tel: [phone] Fax: [phone]

Toll Free (North America): [phone]

E-mail: [e-mail] URL: www.muxlab.com

© MuxLab Inc. 94-000309-D SE-000412-D

Installation

Troubleshooting

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.

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

Poor Quality Audio

EMI interference

Split pair

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

Weak Audio

Lower grade UTP cable
is introducing high
signal losses.

Check that wiring is not too close to transformers
and ballasts.
Check if the UTP pairs are split and correct.
Each signal pair must be twisted.

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

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).

© MuxLab Inc.