USER GUIDE Stage Series Made in Taiwan ISO-2 Index Overview Features Audio Connection Various System Connection Eliminating Hum and Buzz and the Ground Loop Specifications Measurement Unika Electronic Co., Ltd. www.unikapro.com 6F, No.168, Xin-Hu 2nd Rd. Nei-Hu District, Taipei City. 11494. Taiwan, R.O.C. +886 2 27933017 +886 2 27928264 info@unikapro.
UNiKA ISO-2 User Guide OVERVIEW The ISO-2 is a passive audio isolator designed to be inserted into the signal chain to block hum and buzz caused by ground loops. The ISO-2 accepts unbalanced or balanced signals and is equally suitable for consumer electronics and professional line-level devices. The ISO-2 can be operated as a dual input and outputs, and since the circuit is passive, no power is required.
UNiKA ISO-2 ① ② ③ ④ ⑥ User Guide ⑤ ⑦ ① Ch-1 input: transformer balanced XLR-1/4” TRS Combo Connector. ② Ground Lift switch for Ch-1: disconnects pin-1 on output-1 XLR connector. ③ Phase reverse switch: Swaps pin-2 and pin-3 on Ch-2 when REV is selected. ④ Ground Lift switch for Ch-2: disconnects pin-1 on output-2 XLR connector. ⑤ Ch-2 input: transformer balanced XLR-1/4” TRS Combo Connector. ⑥ Output-2: transformer balanced XLR output. ⑦ Output-1: transformer balanced XLR output.
UNiKA ISO-2 User Guide AUDIO CONNECTION Before connection: As with all audio gear, always ensure audio system levels are turned down or equipment turned off before making connections. This will avoid plugin or turn-on transients from damaging more sensitive components such as tweeters. Connect ISO-2 to system: The ISO-2 has two combination XLR/TRS input connectors, wired to the AES standard pin-1 ground, pin-2 hot (+), pin-3 cold (-).
UNiKA ISO-2 Female 2 XLR-TRS Combo input Male 1 1 3 User Guide 2 2-Signal Hot + 3 1-Ground 3-Signal Cold - Fig-2: XLR-¼"TRS Combo socket for direct input Fig-1: XLR Plugs Balanced connection: 1-Ground 2-Signal Hot (+) 3-Signal Cold (-) For Unbalanced connection, pin-3 should be connected to Ground with pin-1.
UNiKA ISO-2 User Guide VARIOUS SYSTEM CONNECTION Mobile device FOH System Mixer Fig-5: Mobile device to mixing console FOH System Mixer Outside Broadcast Truck Digital Audio Work Station Fig-6: Mixing console to devices with different power source Powered speakers Computer playback Fig-7: Computer playback to powered speakers ELIMINATING HUM AND BUZZ AND THE GROUND LOOP The ISO-2 is equipped with output isolation transformers to eliminate hum and buzz caused by stray DC voltage and ground loops.
UNiKA ISO-2 SPECIFICATIONS User Guide (Specifications are subject to change without notice.) Circuit design Input connectors 2 Balance combo jack ( Pin-2 hot, Pin-3 cold, Pin-1 ground ) Input impedance 47KΩ Max. input level before clipping +26dBv Output device 2 XLR w/balance transformer isolated Output impedance 600Ω nominal, Transformer balance Output level +26dBv Frequency resonponse 20Hz to 20KHz +0.2 / 0 dB Dynamic range >130dB S/N ratio~ un-weight 20Hz to 20KHz -136dB T.H.
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