Ground Zero GZTA 4125X-II24V, Owner'S Manual

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Control and functions
1 Speaker terminals For connection of the speakers
2
Power terminals
GND -> Ground connection
REM -> Remote antenna terminal
BATT -> +24 Volt
3 Status indication
GREEN – OK
RED – Error
4 RCA inputs
Terminal for connection of the RCA wires.
To avoid failure, please use high quality RCA wires.
5 Input level controller With this controller you can adjust the input sensitivity.
6 Bass boost controller For adjusting of the bass boost level in the range from 0 to +12 dB.
7 Mode switch
Adjust the crossover for the chosen utilization.
LPF – Only bass frequencies (below 40Hz -4000Hz) will be reproduced.
FULL – All frequencies will be reproduced.
HPF – Only middle and high frequencies (over 5Hz – 500Hz) will be
reproduced.
At LPF adjustment, also the Highpass (Subsonic) is activated.
This equals a Bandpass filter of 5 – 4000Hz.
8
High pass controller
(Subsonic)
Set the filter switch to „HIGH“ position.
Adjust the variable HPF crossover frequency to the desired frequency using
the controller. All frequency between 5 and 500Hz will be reproduced.
9 Low pass controller
Adjust the variable lowpass frequency to the desired frequency between 40
and 4000 Hz using the controller.
Turning on the amplifier
The amplifier automatically turns on a few seconds after you turn on your radio.
Note: Your amplifier temporarily shuts down if it gets too hot, then restarts automatically once it cools
(At about 80° / 176° F).
Adjusting the audio level
1. LEVEL (Min/Max): Turn fully counter- clockwise to MIN position
2. Turn the auto sound system's volume control to about two-third of its full range.
3. Adjust LEVEL to a comfortable listening level.