INPUT/OUTPUT PROTECTION -
The input circuits are isolated by resistors. An ultrasonic network uncouples RF from the output and helps to keep
the amplifier stable with reactive loads.
OPERATING VOLTAGE (AC MAINS) -
On the rear panel will indicate the correct AC mains voltage. Connecting to the wrong voltage is dangerous
and may damage the amplifier. Always be sure the source voltage for your areas matches the required voltage for your amplifier.
GAIN CONTROLS -
The gain controls are located on the front panel and are calibrated in 2dB of attenuation from full gain. It is best to a d j ust the
amplifier so no “hissing” is heard from speakers with no music being played, this will ensure the lowest possible distortion d u ring normal operation.
AMPLIFIER FEATURES:
THRU :
THRU will allow the user to daisy-chain one amplifier’s signal input into another amplifier. Plug the signal source outputs into the first amplifier’s
input, patch from the amplifier’s THRU jacks to the next amplifier’s input, and so on, daisy-chaining as many amplifiers as there is no excessive level loss.
GROUND LIFT SWITCH (GX-3000 only) :
Applying or lifting the ground switch will change level for background noise and hum, if the noise level
remains the same in either position, better to keep the ground lift switch in the ground position. This will eliminate 50Hz/60Hz cycle hum that is sometimes
induced when mounting several units in the same rack.
LED INDICATORS :
Each channel has six LEDS (for the GX-3000 only has five LEDs). Four LEDs indicate signal level activity; two green LED and two
yellow LED. One red LED indicates signal. One red LED indicates protections mode for shorts / overload.
FUNCTION INDICATORS :
These green/white/green LED indicators detail the amplifiers current operating mode (Parallel, Stereo, or Bridge).
INPUT GAIN SWITCH :
The input gain switch will change the volume or output of an amplifier. In the rear panel of the GX series, you can find the
switch to select the desired input gain: for the GX-4000/5000/7000 is 26dB, 32dB or 0.775V selection, and for the GX-3000 is 1.44V, 1V or 0.775V
selection. It is set at the factory to 0.775V for rated output into 8 ohms. Before you change the input gain, please turn off the amplifier and disconnect its
power cord from the AC mains power receptacle to avoid danger.
page 16
Introduction Front Panel Rear Panels Set Up Speakon Assembly Operating Modes
Specifications
Protection
Features
UNiKA
GX-3000/GX-4000/GX-5000/GX-7000
