Ground Zero Competition Series User manual

COMPETITION SERIES

AMPLIFIER

OWNER’S MANUAL

GZCA 3.0K-SPL

Features

•1 Ohm stable mono fullrange amplifier

•High efficient class D technology

•Status LED monitoring

•Illuminated GZ logo

•Up to 12 dB adjustable bass boost (@ 35 to 55 Hz)

•Adjustable high-pass filter

•Adjustable low-pass filter

•Adjustable input sensitivity

•Thermal / short circuit / overload protection

Recommended wiring

GZCA 3.0K-SPL

Speaker wires

min 2.5 mm² / 13 AWG

Power supply wires

min 35.0 mm² / 2 AWG

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.

Controls & Features – GZCA 3.0K-SPL

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

INPUT socket

to connect RCA wire* from the audio source / head unit

OUTPUT socket

to connect another amplifier /provides the original audio signal

FILTER HP control

to adjust the required high pass crossover point from 5 Hz to 80 Hz

FILTER LP control

to adjust the required low pass crossover point from 80 Hz to 20 KHz

LEVEL control

to adjust the input sensitivity

BASS BOOST control

to adjust the bass boost level from 0 dB to +12 dB

BOOST FREQ. control

to adjust the bass boost frequency from 35 Hz to 55 Hz

OUTPUT terminal

(+) positive speaker wire connection

( - ) negative speaker wire connection

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

Input and Output wiring – GZCA 3.0K-SPL

Signal input wiring – GZCA 3.0K-SPL

Specifications

Model

GZCA 3.0K-SPL

Amplifier type

Mono fullrange class D

RMS Power @ 2 Ω

measured @ 14.4 V

1800 W (0.1% THD+N)

RMS Power @ 1 Ω

measured @ 14.4 V

3400 W (0.1% THD+N)

RMS Power @ 1 Ω

measured @ 12.6 V

3000 W (0.1% THD+N)

S/N ratio

84 dB (LPF 15 KHz / nominal power)

THD+N

0.1 % (@ nominal power / 100 Hz / LPF 15 KHz)

Damping factor

>1000 (@100 Hz / nominal power)

Low pass filter

80 Hz ~20 KHz

High pass filter

5 Hz ~80 Hz

Band pass filter

5 Hz ~20 KHz

Bass boost

0 ~ +12 dB (35 Hz ~ 55 Hz)

Frequency response

10 Hz ~20 KHz

(± 1 dB)

Input sensitivity

500 mV ~8 V

Operation voltage

9 V ~16 V

Fuse

160 A (must be installed separately!)

Dimensions

w x h x l (mm)

225 x 68 x 214

Dimensions

w x h x l (inch)

8.85 x 2.67 x 8.43

Weight

2.6 kg / 5.7 lbs

Recommended battery current

min 160 A / ideally 320 A

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 probably damaged

Device has to be sent to the 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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