PRO IS2 Pro Series Audio Interface Dual Passive ISO Transformer
UNiKA PRO IS2 User Manual
Product Information
The UNiKA PRO IS2 is a passive two-input and two-output isolated
signal splitter designed and made in Taiwan. It features a dual
passive ISO transformer design, eliminating ground loop noise and
leakage. The product does not require batteries or phantom
power.
Product Usage Instructions
- General Precautions: Before using the PRO IS2,
please read the manual carefully and follow the instructions
provided. When connecting a mixer to the interface, ensure that the
mixer power and +48V phantom power are turned off before connecting
the signal cables. For passive models, do not turn on the phantom
power to avoid equipment damage. - Volume Knob: If your model has a volume knob,
turn it to the minimum position before use. - Wiring: During use, avoid plugging or
unplugging wires arbitrarily to prevent signal loss. Refer to the
instructions for proper soldering of plugs to maintain expected
signal levels and smooth transmission. - Installation and Operation Guidance: For
further assistance with installation or operation, contact UNiKA’s
dealer or distributor directly or email [email protected] for
support.
Contact Information
For warranty claims or any other inquiries, please contact:
UNiKA Electronic Co., Ltd.
Website: www.unikapro.com
Address: 6F, No.168, Xin-Hu 2nd Rd. Nei-Hu District, Taipei
City. 11494. Taiwan, R.O.C.
Phone: +886 2 27933017
Fax: +886 2 27928264
Email: [email protected]
USER MANUAL
PRO IS2 PRO SERIES AUDIO INTERFACE DUAL PASSIVE ISO TRANSFORMER DESIGN & MADE IN TAIWAN
Index
GENERAL PRECAUTION BEFORE USE PRODUCT OVERVIEW CAUTION PARAMETER TEST CONDITIONS FEATURES WHEN TO USE PRO IS2 APPEARANCE PARTS & FUNCTIONS ELIMINATING GROUND LOOP NOISE CONNECTORS WIRING GUIDE SYSTEM CONNECTION GUIDE-STAGE SYSTEM CONNECTION GUIDE-FIXED INSTALLATION SPECIFICATIONS
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 [email protected]
UNiKA PRO IS2 User Manual
GENERAL PRECAUTION BEFORE USE
Thank you for purchasing the UNiKA PRO SERIES AUDIO INTERFACE. Before using, please read this manual carefully and pay attention to every detail that you must pay attention to. If you use a mixer to connect to this interface, please turn off the mixer power and +48V phantom power before connecting, and then turn on the power and phantom power after inserting the signal cables. For passive models, please do not turn on the phantom power to avoid leakage or damage the equipment.
If using a model with a volume knob, turn the volume knob to the minimum. During use, please do not plug or unplug the wires arbitrarily to avoid signal loss. Please refer to the following instructions for the soldering method of the plugs to ensure the expected level and keep the signal smooth.
IIf you need further installation or operation guidance, please directly contact UNiKA’s dealer or distributor, or write to the following mail address for help:
[email protected]
PRODUCT OVERVIEW
PRO IS2 is a passive two-input and two-output isolated signal splitter without the need to install batteries or provide phantom power.
PRO IS2 has a pair of built-in UNiKA-PRO EI9AE3R3 1.25:1 isolation transformer with special coating and surrounded by Oriental silicon steel shield which has a special copper foil layer and a dedicated ground layer, which allows this device to restore high signal/noise ratio and dynamic sound, and can avoid unnecessary Leakage caused by radio frequency interference, ground interference and potential difference. PRO IS2 is particularly suitable for recording studios, live performances and fixed installation projects. PRO IS2’s input uses Combi sockets, suitable for both balance XLR and TRS plugs. The CH-1/CH-2 output channels each have independent UNiKAPROTM isolation transformer and independante GND/LIFT switch for easy connection to remote or different power sources at the end of the equipment to eliminate the leakage and noise caused by the potential difference and the ground loop.
CAUTION
This product has undergone rigorous inspection before leaving the factory. If customers encounter failures during use, please contact your local dealer or distributor for replacement or repairing, do not disassemble the case or replace parts by yourself, which will invalidate the warranty.
For details, please refer to the warranty regulations in the enclosed warranty card, and fill in the details, and get a valid stamp or signature of the dealer or distributor.
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UNiKA PRO IS2 User Manual
PARAMETER TEST CONDITIONS
In the development and manufacturing process, Audio Precision’s 2700 series and 500 series are used to test and verify electrical characteristics.
FEATURES
· One input & three output audio splitter · CH-1/CH-2 are equipped with separate UNiKA-PRO EI9AE3R3 isolation transformer · Use XLR jack for input · Set the PHASE REVERSE button for CH-2 input · The output is equipped with independent GND/LIFT switches
WHEN TO USE PRO IS2
PRO IS2’s CH-1/CH-2 are each equipped with independent EI9AE3R3 professional audio isolation transformer, which is a transformer that works in the audio range, also known as a low-frequency transformer. The frequency range is generally from 20 to 20000 Hz. It is mainly used for audio transmission between systems or devices. It can completely isolate the potential difference between two systems, avoid hum interference caused by ground loop problems, and prevent excessive potential difference from damaging the input level of the device. The safe transmission of signals is an essential product for long-distance transmission of analog audio systems. However, since it does not have an input amplifier circuit and attenuator, it can only transmit balanced signals through an isolation transformer or convert unbalanced signals into balanced signals for transmission, and does not have the function of increasing the level. If the input signal is of a high-impedance type, such as musical instruments or some players, it is recommended to use other DIs with input attenuators in the PRO series to transmit signals. These DIs also have built-in EI9AE3R3 professional audio isolation transformer. The CH-2 is attached with an invert button. If your wire’s hot pin is pin-3, you can press this button to switch the hot pin to pin-2. Each output has an independent GND/LIFT button to ground or float pin-1 of the output to eliminate noise or leakage in the event of ground noise or inadvertent ground loops.
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UNiKA PRO IS2 User Manual
APPEARANCE PARTS & FUNCTIONS
CH-1 signal output: XLR terminal pass through the isolation transformer.
Output grounding/floating switch: when the switch is not pressed, the first pin (PIN-1) of XLR is grounded. PIN-1 will be disconnected from ground after pressing. This button should depend on the system.
Used in the situation, in order to isolate the ground loop noise or leakage.
CH-1 signal output: XLR terminal pass through the isolation transformer.
Signal input: One XLR jack be able to input balance LINE signal.
Direct monitor output: XLR terminal, direct-through output without isolation transformer.
REV: The CH-2 is attached with an invert button. If your wire’s hot pin is pin-3, you can press this button to switch the hot pin to pin-2.
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UNiKA PRO IS2 User Manual
ELIMINATING GROUND LOOP NOISE
The built-in channel independent balanced isolation transformer has solved the potential difference leakage problem. When the system causes a ground loop due to poor wiring, the noise can be eliminated through the GND/LIFT button. The GND/LIFT button determines whether pin 1 of the output XLR is grounded, grounded when it bounces, and disconnected from ground when pressed.
CONNECTORS WIRING GUIDE
XLR-Female connector XLR-Male output jack
21 3
12 3
1-Shield pin 2-Hot pin 3-Cold pin
The unbalanced connection, pin-2 is hot, pin-3 is shield paralleled with pin-1.
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UNiKA PRO IS2 User Manual SYSTEM CONNECTION GUIDE-STAGE
When the stage and F.O.H. be powered by different power supply source FOH CONSOLE
SELF-POWERED STAGE MONITOR OR FOH SPEAKER POWERED BY DIFFERENT POWER SOSURCE
MONITOR OR PRODUCTION CONSOLE POWERED BY DIFFERENT POWER SOSURCE
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UNiKA PRO IS2 User Manual
SYSTEM CONNECTION GUIDE-FIXED INSTALLATION
When the main and extension system be used by different power supply source
MAIN VENUE
REAL TIME RECORDING
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UNiKA PRO IS2 User Manual
SPECIFICATIONS
(Specifications are subject to change without notice.)
PRO IS2 Circuit principle Input connector Monitor out connector Input impedance Output impedance Max. input level before clipping Max Output level Output connector Output GND/LIFT switch Frequency response S/N ratio @20Hz~20KHz un-weight T.H.D. @1KHz 0dBV output Transformer Ratio Chassis Surface finished Dimension (W x D x H) Weight Shipping weight Packing per carton Shipping dimension per carton
Passive/Transformer balance output 2 x Combi jacks N/A 4.7K balance/10K unbalance 600 +22dB +22dB 2 x Male XLR through ISO Transformer Independent push button for each channel 20Hz-20KHz, -0.3/+0.1dB >120dB <0.02% 1.25:1 1.6mm/1.2mm steel cabinet and chassis Durable complex painting 78 x 124 x 46 mm 0.62kg 0.65kg 20pc/13.60kg 305 X 283 X 195 mm
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