Ground Zero Car Specific Series Manual de usuario

CAR SPECIFIC SERIES

MONO AMPLIFIER

GZCS A-1.650D

Owner´s Manual

Features

•High-performance class D mono amplifier

•1 ohm stable

•Stereo RCA input

•High-level input with auto-on feature

•Adjustable low pass crossover filter

•Adjustable subsonic filter

•Adjustable bass boost level (@ 50 Hz)

•Adjustable phase shift

•Adjustable input sensitivity

•Turn-on delay

•Thermal protection

•Wired bass level remote control (available separately)

(GZTA Bassremote)

GROUND ZERO GZCS A-1.650D

CAR SPECIFIC SERIES

Mounting instructions

•As a precaution, it is recommended to disconnect the vehicles battery before mounting the amplifier.

Note: For new vehicles, disconnecting the battery might cause various errors in your vehicle´s electric

system that can be cleared only by authorized service partners of your vehicle´s manufacturer! Please

ask your service partner first before disconnecting the battery!

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

a fuse value matching the recommendation for your amplifier

Note: If there is more than one amplifier connected using this power wire, the main fuse value must be

equal to the sum of the recommended fuses of all connected devices. However, make sure the

diameter of your power wire will be enough for the required current!

•If necessary, replace a defective fuse by a fuse with identical quality and value

•Never drill holes to the vehicle´s gas tank, brake lines, to wirings or any other important vehicle parts!

•Never pass wires over sharp edges or vehicle parts due avoid any kind of damage

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

•Lay the power supply wiring always separated from speaker wiring to avoid disturbance

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

After a certain cooling time, it will turn on automatically. To avoid heat build-up, enough air supply for

cooling must be provided. Never cover the surface of the amplifier´s heatsink entirely

•The amplifier should NEVER be mounted onto a vibrating part or surface such as a subwoofer

enclosure. This might lead to malfunction due to loosened electrical parts inside the amplifier.

•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 it.

Terms of warranty

The limited warranty for this product is covered by GROUND ZERO´s regional distribution partners and their

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

Recommended wiring

Speaker wires

min 2.5 mm² / 13 AWG

Power supply wires

min 20 mm² / 4 AWG

GROUND ZERO products are engineered in Germany

GROUND ZERO – international sponsor

GROUND ZERO GZCS A-1.650D

CAR SPECIFIC SERIES

Controls & Features

Power terminal

+12V To be connected to the positive terminal of the battery

REM To be connected to the remote output of the head unit*

(*not required in high-level input mode)

GND To be connected to the vehicle´s ground

(or directly to the negative terminal of the battery)

Fuse(s)

If necessary to replace a defective fuse, it´s strongly recommended to

use a fuse with identical value

Speaker terminal

To connect the speaker wires / min 1ohm load

Sensitivity control

Controller to adjust the input sensitivity

Line input (RCA)

Input sockets to connect RCA wires

Important note: High-level and RCA inputs should

never

be used

simultaneously! This may cause serious damage to the amplifier

High-level input

Head units without RCA pre-amplifier output signal can be connected

using the high-level input to connect the speaker output of the head

unit directly.

If used, the amplifier turns on automatically (auto-on feature)

The remote input of the power supply terminal remains unused

Important note: High-level and RCA inputs should

never

be used

simultaneously! This may cause serious damage to the amplifier

Phase shift control

To adjust the phase of the speaker (0° to 180°)

Low pass filter

To adjust the required crossover point. Frequencies above the selected

crossover point will be filtered (40 Hz to 250 Hz)

Subsonic filter

To adjust the required crossover point. Frequencies below the selected

crossover point will be filtered (10 Hz to 40 Hz)

Bass boost control

To increase the bass level at 50 Hz up to 12 dB

Remote socket

To connect the wired bass level remote control (available separately)

Status indication

POWER (green) ok (correct operation)

PROTECT (red) error (protection mode)

GROUND ZERO GZCS A-1.650D

CAR SPECIFIC SERIES

Speaker wiring – 1 voice coil / speaker

Speaker wiring – 2 voice coils / speakers

GROUND ZERO GZCS A-1.650D

CAR SPECIFIC SERIES

RCA input wiring

High-level input wiring

Specifications

Model

GZCS A-1.650D

Amplifier type

Mono class D

RMS Power @ 4 Ω

CEA Standard CEA-2006-A

1x 250 W (1% THD+N)

RMS Power @ 2 Ω

CEA Standard CEA-2006-A

1x 450 W (1% THD+N)

RMS Power @ 1

Ω

CEA Standard CEA-2006-A

1x 650 W (1% THD+N)

1x 750 W (10% THD+N)

Low pass filter

40 Hz – 250 Hz (12 dB/oct)

Subsonic filter

10 Hz – 40 Hz (12 dB/oct)

Frequency response

10 Hz – 250 Hz

Input sensitivity

200 mV – 4 V

Fuse(s)

2x 30 A

Dimensions

w x h x l

7.28 x 1.85 x 5.98“

GROUND ZERO GZCS A-1.650D

CAR SPECIFIC SERIES

Trouble shooting guide

Listening to music can be emotional, impressive, relaxing or enjoyable. At that, it doesn´t really

matter what kind of music is the personal favorite, whether it´s Instrumental, Jazz, Electro, Latin,

Classic, Rock or any other music direction. However, audio reproduction quality at each desired

volume is elementary. Some music styles require higher levels while others prefer the soft tones.

GROUND ZERO considers all the different wishes of customers during the development of new

products. Along with this, the target is to create the most realistic sound, to transfer the soul of the

music and the intention of the performer. Summarized to one phrase: RESPECT THE MUSIC!

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 POW LED turn to green?

Check protection fuse(s) of the amplifier (harness)

Check remote wire connection (RCA input mode)

Check +12 Volt power supply wire connection

Check ground wire connection

Did the PROTECT LED turn to red?

Check for speaker short or amplifier overheating

Device does not

turn on

Power supply of the amplifier?

Check power wire or connections

Remote wire powered? (RCA input

mode)

Check remote wire connection to the head unit

No sound on one

channel

Speaker wiring undamaged?

Check for short circuit or open connections

Input signal on each RCA lead?

Reverse left and right RCA inputs to check the

audio input signal

Device turns off at

medium / high

volume

Load impedance of each speaker

correct?

Check if each speaker load impedance matches

the technical specifications of the amplifier

Status LED turned

on red

Temperature protection circuit active

Decrease head unit´s volume / wait for cooling

Speaker wires short / speaker

damaged

Check speaker / wires and insulate if necessary

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