Ground Zero GZTA 2155X-II Manuale utente
TITANIUM-SERIES
AMPLIFIER
OWNER’S MANUAL
GZTA 2155X-II
GZTA 4125X-II
Ausstattungsmerkmale
•4 Ohm / 2 Ohm stable Stereo
•Mosfet power supply
•Power & Protection indicator
•Variable 12dB bass boost (45Hz)
•Variable highpass
•Variable lowpass
•Adjustable input sensitivity
•Soft delayed remote turn- on
•Bass remote control (GZTA 2155X-II optional)
•Thermal / Short / Overload protection
2
Tools and materials you need
•Screwdriver
•Electric drill, 3 mm / 0.12” carbide drill bit
•Mounting screws
•Power wire min. 16 mm² / 5AWG
•Ground wire min. 16 mm² / 5AWG
•Speaker wire min. 2 x 1,5 mm² / 15AWG
Please note!
•As a precaution it is advisable to disconnect the vehicle’s battery before making connection
to the +12 Volts supply wiring (see owner’s manual of your car for further information).
•Please use great caution drilling your trunk. Your gas tank and brake lines can be damaged by puncturing with your drill bit –
this could cause damage or failure of your cars operating systems.
•Never pass wires over sharp angles. It is recommended to buffer the power supply of the amplifier with a capacitor min. 1
Farad to guarantee a stable operation voltage.
WARNING !
High powered audio systems in a vehicle are capable of generating "Live Concert" levels of sound pressure. Continued exposure to
excessively high volume sound levels may cause hearing loss or damage. Also, operation of a motor vehicle while listening to audio
equipment at high volume levels may impair your ability to hear
external sounds such as; horns, warning signals, or emergency vehicles, thus constituting to a potential traffic hazard. In the interest of
safety, Consumer Electronics recommends listening at lower volume levels while driving.
Planning your system
Before beginning the installation, consider the following:
a. If you plan to expand your system by adding other components sometime in the future, ensure adequate space is left, and
cooling requirements are met.
b. If your radio / source is equipped with pre-amp outputs, it is possible to utilize them to drive the amplifier and connecting
(amplifier) to the 2 rear speakers.
Mounting your amplifier
a. Select a suitable location that is convenient for mounting, is accessible for wiring
and has ample room for air circulation and cooling.
b. Use the amplifier as a template to mark the mounting holes, remove the amplifier.
3
Warning
Chose a mounting position where all electric wires are protected from being damaged by sharp edges, heat or other conditions. +12Volt
DC electrical connections must be fused on the battery side. Make sure your radio and all other devices will be turned off while connection
your system.
If you need to replace the power fuse, replace it only with a fuse identical to that supplied with the system. Using a fuse of different type or
rating may result in damage to this system which isn’t covered by the warranty.
Controls and functions – GZTA 2155X-II
4
Controls and functions – GZTA 4125X-II
5
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.
6
Stereo wiring – GZTA 2155X-II
7
Mono Wiring – GZTA 2155X-II
Trimode wiring – GZTA 2155X-II
8
Stereo wiring – GZTA 4125X-II
9
Bridge mode – GZTA 4125X-II
10
Trimode wiring – GZTA 4125X-II
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