Specifications Environment Devices Transmission 3 dB Bandwidth Maximum Input Insertion Loss per Balun Pair Common Mode Rejection Ratio (CMRR) THD Audio Source Impedance Audio Receiver Impedance Max. Distance via Cat 5E/6 UTP/STP Cable Pin Configuration (RJ45) Cable: Cat 5E/6 UTP/STP Cable: Coax Connectors Temperature Enclosure Dimensions Weight Warranty Order Information Line level unbalanced analogue audio DVD players, satellite receivers, MPEG players, laptops, hifidelity 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 1.1 Vp-p Less than 2 dB over the frequency range Greater than 60 dB at 1 kHz Greater than 40 dB over the frequency range Less than 0.007% at 1 kHz 100 ohm maximum 10 kohm minimum 3,250 ft (1 km) Audio 1 (White): Pins 1(R) & 2(T) Audio 2 (Red): Pins 3(R) & 6() 24 AWG or lower solid copper twisted pair wire Impedance: 100 ohm at 1 MHz Maximum capacitance: 20 pf/ft Attenuation: 6.6 dB/1,000 ft at 1 MHz Shielded audio cable Two (2) RCA-M 6” cable leads One (1) RJ45 Operating: 0º to 55ºC Storage: -20º to 85ºC Humidity: Up to 95% non-condensing ABS. Fire retardant plastic 2.40” x 2.25” x 1.00” plus 6” audio lead 3.1 oz (89 g) Lifetime 500028 Stereo Hi-Fi Balun 8495 Dalton Road, Mount Royal, Quebec, Canada. H4T 1V5 Tel: (514) 905-0588 Fax: (514) 905-0589 Toll Free (North America): (877) 689-5228 E-mail: email@example.com URL: www.muxlab.com © MuxLab Inc. 94-000556-B SE-000589-B Stereo Hi-Fi Balun 500028 Quick Installation Guide Overview The Stereo Hi-Fi Balun (500028) allows unbalanced line level stereo audio to be transmitted up to 5,000 ft (1.5 km) via an unshielded copper twisted pair (UTP) cable in a point-to-point connection. Used in pairs, the product is designed for high fidelity applications where full audio bandwidth (20 Hz to 20 kHz) is required. Used in pairs, the Stereo Hi-Fi Balun eliminates costly and bulky audio cables, allowing audio equipment to be connected or moved within a structured cabling environment. Applications include: Audio distribution, high-fidelity sound systems, and custom residential audio systems. Installation Troubleshooting To install the Stereo Hi-Fi Baluns, perform the following steps: The following table describes some of the symptoms, probable causes and possible solutions in respect to the installation of the Stereo Hi-Fi Balun: 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. Symptom Probable Cause EMI interference Poor audio quality Split pair No audio No power Open circuit Defective balun Audio phase cancellation Reversed wires Audio weak 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 straightthrough 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. © MuxLab Inc. Distance specifications exceeded Possible Solutions Check that wiring is not too close to transformers and ballasts. Ensure that the UTP pairs are not split and that each pair of wires is twisted. Check your audio system for power. Check wiring to ensure continuity Change Stereo Hi-Fi Baluns for another pair. Check for straight-through wiring. Check DC loop resistance and verify if distance spec is exceeded. Reduce cable length or eliminate high-loss components. 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).