Unika UZ-25II User manual

UNIKA – UZ-25II
Stereo Dual Source Five Zone Distribution Mixer
OPERATION MANUAL
INTRODUCTION
The UZ-25II is designed for remote volume control of multiple amplifiers or powered speakers in a distributed audio system. Two stereo sources are available to
each of five output zones. Each source input pair handles separate left and right balanced line level signals. Each output zone features independent level control
from inputs 1 and 2, stereo/mono selector with mono indicator, LED level metering, and left and right balanced line level zone outputs. All audio connections are
balanced XLR. The built in power supply and single high 19” rack mount format allows for easy installation and reliable operation.
What Is A Zone Distribution Mixer?
The use of multiple power amplifiers, each driving one or more speakers, or multiple powered speakers is now commonplace in most distributed audio systems.
Whether the installation is a club, a hall, a restaurant, a church, an arena, an office, a recreational facility, or even a portable PA with distributed speakers,
systems like this offer the potential to balance the audio level throughout the coverage area. You can adjust the volume of every amplifier or powered speaker,
either in groups or individually, from a centralized location with a zone distribution mixer like the Model UZ-25II. Basically the input of the Model UZ-25II is
connected to the PA mixer’s line-level output (the Model UZ-25II will accept the output of two mixers or stereo signal sources) and the power amps or powered
speakers are connected to the Model UZ-25IIs zone outputs. As you adjust volume for each zone within the system the independent LED level metering gives a
quick visual reference to the level variations throughout the system.
FEATURES:
 Left and right balanced Source 1 and 2 Inputs, accepts stereo or mono signal sources.
 Source 1 and 2 input channels are internally routed to all five Zone channels.
 Five Zone channels each feature Source 1 and 2 level controls and left and right balanced output XLRconnectors.
 Stereo/Mono selector on each zone sums left and right into Mono mode when engaged.
 Mono indicator LED on each zone channel indicates that mono has been selected.
 Five LED level metering (-25, -20, -15, -10, Clip) on each zone channel indicate signal activity for eachzone.
 Source 1 and 2 indicator LEDs show you when signal is present in each sourcechannel.
SPECIFICATIONS:
Input Connections: XLR-F balanced (4)
Output Connections: XLR-M balanced (10)
Input Impedance: 47k Ohms
Output Impedance: 200 Ohms
Maximum Input Level: +20dBu balanced
Maximum Output Level: +24dBu balanced
Maximum Gain: +6dB
Signal to Noise Ratio: >90dB typical
THD: < 0.05% typical
Power Requirements: USA: 105 to 125 VAC / 50-60Hz, 15 Watts typical
Dimensions: (HxWxD in) 1.75 x 19.0 x 7.25
Dimensions: (HxWxD mm) (44.5 x 483 x 184)
Weight: 5.34 lbs. (2.42kg)
OPERATION
a) Verify proper voltage selection on the IEC style power connector for your location. Connect the AC cord to a grounded AC outlet.
b) Using balanced XLR cables connect the balanced stereo output of the primary audio source (mixer) to the UZ-25II’s left & right Line 1 In source connectors.
Alternately a mono signal source can be connected to either L or R input. Repeat the process with Line 2 In source for an additional mixer or other audiosource.
c) Using balanced XLR cables connect the Zone Out connectors to the inputs of the appropriate power amplifiers and/or poweredspeakers.
d) In many situations the Stereo/Mono selector would be in the Mono position. There are two reasons for this. Firstly, stereo separation works well in the home
where the listener can be situated more exactly between the speakers to hear each one equally. But away from that environment in a club, restaurant, office, rec
hall, etc, listeners often find themselves closer to one speaker than the other. Stereo separation can cause a situation where you primarily hear just part of the
program e.g., guitar but no keyboard or vice-versa. With the system in Mono mode, all of the program music comes out all of the speakers. Secondly, if you
connect a mono source to one of the Left or Right Source Input connectors then switch one or more zones into Stereo, that source will only come out the
amp/speakers connected to the Left or Right Zone outputs. People not situated close to those speakers may not be able to hear that source atall.
e) Adjust the Source level controls to produce the desired volume in each area. If a CLIP indicator lights, reduce either that Zones level control, or the output of
the signal source to prevent distortion.
f) The LED level indicators in each Zone show the relative signal level for thatZone.
g) The Source Indicator 1 and 2 lights show signal activity of eachsource.

WARNINGS
All operating instructions should be read before using this equipment.
To prevent the risk of electrical shock, do not remove the cover or the back.
There are no user-serviceable parts inside. Please refer servicing to a qualified service technician.
Do not expose this unit to rain or moisture or to heat sources such as radiators, stoves, or other items that generate excessive heat.
This unit should be cleaned only with a damp cloth. Do not get moisture inside the unit.
When moving this equipment, it should be placed in its original carton and packing, to reduce the risk of damage in transit.
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