MuxLab 500028,500028-F Users Guide [ok]

Specifications

Environment
Devices

Transmission

3dB Bandwidth
Maximum Input
Insertion Loss per balun
pair
Common Mode Rejection

THD
Audio Source Impedance
Audio Receiver Impedance
Max. Distance – Cat 5 UTP
Pin Configuration (RJ45)

Cable – UTP

Cable - Coax
Connectors

Temperature
Enclosure
Dimensions
Weight
Warranty
Order Information

Line level unbalanced analogue audio
DVD players, satellite receivers, MPEG players, laptops, hi-fidelity stereo
audio amplifiers, audio switchers, AV monitors and other line level audio
equipment.
Transparent to the user.
20 Hz to 20 KHz over the distance range.

1.1Vp-p (unbalanced)
Less than 2 dB over the frequency range.

Greater than 60 dB @ 1 KHz
Greater than 40 dB over the frequency range.
Less than 0.007% @ 1KHz
100 ohms maximum
10 k ohms minimum
3,250 ft (1 km)
Audio 1 (White): pins 1[R] & 2 [T]
Audio 2 (Red): pins 3 [R] & 6 [T]
24AWG or lower solid copper twisted pair wire
Impedance: 100 ohms at 1 MHz; Maximum capacitance: 20 pf/foot.
Attenuation: 6.6 dB/1000 ft at 1 MHz
Shielded audio cable.
500028: Two (2) RCA-M 6” cable leads
500028-F: Two (2) RCA jacks
One (1) RJ45
Operating: 0º to 55º C. Storage:-20º to 85º C. Humidity: up to 95%
ABS. Fire retardant plastic

2.40” x 2.25” x 1.00” plus 6” audio lead

3.1 oz (89 gms)
Lifetime
500028 Stereo Hi-Fi Balun, M
500028-2PK Stereo Hi-Fi Balun, M, 2-Pack
500028-F Stereo Hi-Fi Balun, F
500028-F-2PK Stereo Hi-Fi Balun, F, 2-Pack

Stereo Hi-Fi Balun (500028 & 500028-F)

Quick Installation Guide

Introduction

The Stereo Hi-Fi Balun (500028, 500028-F) allows unbalanced line level stereo audio to
be transmitted up to 5,000 ft (1.5km) via unshielded copper twisted pair (UTP) in a
point-to-point connection. Used in pairs, the product is designed for high fidelity
applications where full audio bandwidth (20Hz to 20 KHz) is required. Used in pairs, the
Stereo Hi-Fi Balun eliminates costly and bulky audio cable, allowing audio equipment to
be connected or moved within a structured cabling environment. Applications include;
audio distribution, high-fidelity sound systems, custom residential audio systems.

Installation

To install the Stereo Hi-Fi Baluns, perform the following steps:

1. One pair of Stereo Hi-Fi Baluns is required for each stereo channel.

2. Identify the pin configuration of the baluns. Two (2) twisted pairs are required
as shown in the following diagram.

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Note: The Stereo Hi-Fi Balun is phase polarity sensitive. Therefore, in order to
achieve full stereo audio quality, please ensure that the wiring is straight-through
and according to EIA568 (A or B) standard.

3. Verify the colors of the RCA plugs and connect one (1) Stereo Hi-Fi Balun to
the left-audio and right-audio RCA connectors of the audio source.

4. Verify the colors of the RCA plugs and connect a second Stereo Hi-Fi Balun to
the left-audio and right-audio RCA connectors of the audio receiver at the
remote end.

5. Complete the connection between the two (2) baluns, using standard UTP
cable, connector blocks and appropriate modular RJ45 outlets.

6. 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.

7. The female version requires respective RCA type audio cables (not included)

Troubleshooting

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

Symptom Probable Causes Possible Solutions

Poor audio
quality

No audio No power Check your audio system for power.

Audio phase
cancellation
Audio weak Distance specifications

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.

Open circuit Check wiring to ensure continuity
Defective balun Change Stereo Hi-Fi Baluns for

another pair.

Reversed wires Check for straight-through wiring.

Check DC loop resistance and verify

exceeded

if distance spec is exceeded. Reduce
cable length or eliminate high-loss
components.

© MuxLab Inc.