Ground Zero GZNA 2850XII Owner'S Manual Download Page 2

Tools and materials you need 

 

 

Screwdriver 

 

Electric drill,  3 mm / 0.12” carbide drill bit 

 

Mounting screws  

 

Power wire min. 35 mm² / 2 AWG 

 

Ground wire min. 35 mm² / 2 AWG 

 

Speaker wire min. 2 x 4 mm² / 11 AWG 

 

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 an additional battery 

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 and drill 4 holes. Then mount the amplifier 

with the mounting screws. 

 

Warning 

 

Chose a mounting position where all eclectic 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. 

This amplifier has no internal fuse. Therefore it is absolutely necessary to connect the ANL- fuseholder (included in delivery) with its 200 A 

fuse.  The cable length between amplifier and fuseholder must not be longer than max 20 cm / 7.9”. Please see the connection diagram on 
the following page for correct wiring. 

 

 

 

Summary of Contents for GZNA 2850XII

Page 1: ...pply SMD Technology Power Protection indicator Variable 12dB Bass Boost High pass filter Subsonic filter with 1 10 switch variable to 4000Hz Low pass filter with 1 10 switch variable to 4000Hz Variable phase shift 0 180 Adjustable input sensitivity Soft delayed remote turn on Remote control Thermal Short Overload protection ...

Page 2: ...rest 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 utili...

Page 3: ...Power connection 3 ...

Page 4: ...Controls and functions 4 ...

Page 5: ...ill be reproduced In this adjustment the Highpass Subsonic is also activated FULL All frequencies will be reproduced HIGH Subsonic Only middle and high frequencies over 5Hz 4000Hz will be reproduced 10 Low pass controller For subwoofer and Kickwoofer operation Only frequencies from 30Hz to 4000Hz will be reproduced depending on the lowpass filter controller position Set the filter switch to LOW po...

Page 6: ...Connecting the speaker 6 ...

Page 7: ...ter out low frequencies and Air core or Ferrit ore coils with a minimum diameter of 1 mm 0 039 for the lowpass crossover to filter out high frequencies The capacitor and inductor values as written in the below table The front and rear channels of this amplifier get this capability Only the rear left and right channels are shown on the following pictures Values for 6dB passive crossover Frequency I...

Page 8: ... Power 2Ω bridged CEA Standard CEA 2006 A 1 x 2600W 1 THD N 1 x 3000W 10 THD N Damping factor 150 Signal to noise Ratio 90 dB Lowpass 30 400 Hz 300 4000 Hz Highpass 5 400 Hz 50 4000 Hz Bandpass 5 Hz 4000 Hz Subsonic filter 5 Hz 4000 Hz Bass boost 0 12 dB Bass boost frequency 30 Hz 80 Hz Phase shift 0 180 Frequency response 5 Hz 38 KHz 1 dB Input sensitivity 200 mV 9 V 5 Bass remote At Lowpass oper...

Page 9: ...orzunehmen ohne den Kunden darüber zu informieren Limited warranty defective products must be returned in original packaging please add a copy of the original purchasing invoice showing the purchasing date and a detailed description of the failure Failure caused by overload misuse or by using the product for competition purpose are not covered by the warranty We reserve the right to make needed ch...

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