Ground Zero Competition Series User manual

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COMPETITION SERIES

AMPLIFIER

OWNER’S MANUAL

GZCA 35K-SPL

Features

•Pure competition amplifier

•1 Ohm stable low frequency amplifier

•High efficient class D technology

•Status LED monitoring

•Illuminated GZ logo as power on indication

•Adjustable input sensitivity

•Link mode option

•Thermal / short circuit / overload protection

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Recommended wiring

GZCA 35.0K-SPL

Speaker wires

Max possible

Power supply wires

According to competition rules / max possible

Remote wire

min 0.75 mm² / 20 AWG

Mounting instructions

•As a precaution, it is recommended to disconnect the vehicles battery before mounting (also note the vehicles manual!)

•The power supply wire (+12 V) has to be protected within max. 20 cm / 8” by a main fuse holder with matching fuse value

(Main fuse value has to be equal to the sum of the recommended fuses of all connected devices to the power wire)

•If necessary, replace a defective fuse with the identical value only

•Never drill a hole to the vehicles gas tank or brake lines, to wirings or any other important vehicle part!

•Never pass wires over sharp edges or vehicle parts

•Keep the wiring away from the antenna and electronic devices contributing to radio reception

•Lay the power supply wiring always separated from speaker wiring

•The amplifier contains a temperature protection circuit that turns the device off in case of overheating. After a cooling time,

it will turn on again automatically. To avoid heat build-up, sufficient air supply for cooling must be provided. Never cover the

surface of the heatsink entirely.

•The amplifier should not be mounted on a strongly vibrating part or surface (e.g. subwoofer enclosure)

•Some amplifiers offer a high-level input option, however if a pre-amplified output (RCA) is available (at the head unit),

it is strongly recommended to make use of them.

WARNING !

Powerful car audio systems are able to create extremely high SPL similar to real live concert levels. Permanent exposure to excessively high

sound levels may cause damage to or loss of the hearing.

Furthermore, operation of a motor vehicle while listening to audio equipment at high volume levels may impair your ability to concentrate

on road traffic and external sounds such as horns, warning signals or emergency vehicles. In the interest of general and own safety, it is

recommended to listen to music at appropriately low volume levels while driving.

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Controls & Features – GZCA 35K-SPL

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Controls & Features – GZCA 35K-SPL

INPUT socket

to connect RCA wire from the audio source / head unit

OUTPUT socket

to connect another amplifier /provides the original audio signal

LEVEL control

to adjust the input sensitivity

OUTPUT terminal

(+) positive speaker wire connection

( - ) negative speaker wire connection

LINK IN socket

input signal from the previous GZCA 35K-SPL in link mode

LINK OUT socket

output signal for the next GZCA 35K-SPL in link mode

POWER supply terminal

+BAT

-> to the battery connection /+12 V

REM -> to the remote output of the head unit

GND

-> to the ground connection

STATUS signs

POWER indication sign

PROTECTION indication sign

CLIPPING indication sign

* To avoid any kind of malfunction, it is strongly recommended to use high quality RCA wires!

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Input & Output wiring – GZCA 35K-SPL

Autogoods “130”

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Signal Input wiring – GZCA 35K-SPL

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Link Mode – GZCA 35K-SPL

This amplifier offers an exclusive feature enabling to connect a vast amount of speakers to up to 10 amplifiers

controlled by only one (master) of them. Separate signal wiring is not necessary. To receive the maximum output power

of each amplifier in the line of linked units, it´s recommended to spread the amount of speakers evenly to all amplifiers

and to decrease the load for each amplifier to 1 Ohm by connecting the speakers in series and/or parallel.

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Specifications

Model

GZCA 35K-SPL

Amplifier type

Mono low frequency class D

RMS Power @ 1 Ω

measured @ 12.6 V

35000 W (0.1% THD+N)

Input sensitivity

500 mV ~6 V

Operation voltage

9 V ~18 V

Fuse

According to competition rules

Dimensions

w x h x l (mm)

225 x 68 x 836

Dimensions

w x h x l (inch)

8.85 x 2.67 x 32.91

Weight

13 kg / 28,66 lbs

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Trouble shooting guide

Terms of warranty

The limited warranty for this product is covered by Ground Zero´s local distribution partners and their

terms and conditions. For further information contact your local retailer or distributor.

Ground Zero GmbH

Erlenweg 25, 85658 Egmating, Germany

Tel. +49 (0)8095/873 830 Fax -8310

www.ground-zero-audio.com

Symptoms

Check / Cause

Action

No audible sound

Does the sign turn to yellow? No?

Probably there is no power supply

Check the power line fuse(s)

Check remote wire connection to the head unit

Check +12 Volt power supply wire connection

Check ground wire connection

Does the sign blink 10 times? Yes?

The battery voltage is too high or too low

The operation voltage must be 9 to 16 V

Does the sign blink 10 times? Yes?

Load at the speaker terminal is below 1 Ohm

Speaker wires may be shorted (short circuit)

Check the wiring and the speakers

Probably no input signal Check the RCA wiring to the head unit

Does the sign light up red? Yes?

Amplifier turned off due to high temperature

Turn off the amplifier until it cools down

Does the sign blink permanently red? Yes?

The amplifier is seriously damaged

Device has to be sent to our service department

Device does not turn on

Does the sign turn to yellow? No?

Probably there is no power supply

Check the power line fuse(s)

Check remote wire connection to the head unit

Check +12 Volt power supply wire connection

Check ground wire connection

Does the sign blink permanently red? Yes?

The amplifier is probably damaged

Device has to be sent to the service department

Distorted audio signal

Does the sign turn red? Yes?

The output signal is distorted

Decrease the amplifier gain (Level) or

Decrease the volume level of the head unit

Amplifier is working, but… Does the sign blink frequently red? Yes?

The battery voltage is below 9.5 V

Check and load the battery

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