Ground Zero GZTA 2155X-B, Owner'S Manual

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Controls and functions
1 Speaker terminals For connection of the speakers
2
Power terminals
GND -> Ground connection
REM -> Remote antenna terminal
BATT -> +12 Volt
3 Satus indication
GREEN – OK
RED – Error
4 Cinch 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 Remote control input For connection of the bass remote control.
10 Low pass controller
For subwoofer and Kickwoofer operation -
Only frequencies from 40Hz to 4000Hz will be reproduced (depending on
the LPF filter controller position). Set the filter switch to „LOW“ position.
Adjust the variable LPF frequency to the desired frequency using the
controller.
At LPF adjustment, also the Highpass (Subsonic) is activated.
This equals a Bandpass filter of 5 – 4000Hz.
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.