Ground Zero GZTA 2155X-II User manual

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

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.

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

Controls and functions – GZTA 4125X-II

Controls and functions

Speaker terminals

For connection of the speakers

Power terminals

GND -> Ground connection

REM -> Remote antenna terminal

BATT -> +12 Volt

Satus indication

GREEN – OK

RED – Error

Cinch inputs

Terminal for connection of the RCA wires.

To avoid failure, please use high quality RCA wires.

Input level controller

With this controller you can adjust the input sensitivity.

Bass boost controller

For adjusting of the bass boost level in the range from 0 to +12 dB.

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.

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.

Remote control input

For connection of the bass remote control.

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.

Stereo wiring – GZTA 2155X-II

Mono Wiring – GZTA 2155X-II

Trimode wiring – GZTA 2155X-II

Stereo wiring – GZTA 4125X-II

Bridge mode – GZTA 4125X-II

Trimode wiring – GZTA 4125X-II

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