Ground Zero HYDROGEN SERIES Manuel utilisateur

HYDROGEN-SERIES

AMPLIFIER

OWNER’S MANUAL

GZHA MINI FOUR 24V

Features

•High-efficient class D mini amplifier

•For 24V use

•Extreme compact size

•2 Ohm stable stereo

•High-level input with Auto-On

•Adjustable wide-range filters

•Adjustable input sensitivity

•Thermal / short circuit / overload protection

Recommended wiring

GZHA MINI FOUR 24V

Speaker wires

min 1.5 mm² / 15 AWG

Power supply wires

min 16.0 mm² / 6 AWG

High-level input wires

min 1.00 mm² / 18 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 needs to be protected within max. 20 cm / 8” by a main fuse holder with matching fuse value

(Main fuse value needs be equal to the sum of values of the fuses of each connected device)

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

•Never drill a hole to the vehicle´s 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)

•If a pre-amplified output (RCA) is available ( at the head unit), it is 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 – GZHA MINI FOUR 24V

Controls & Features GZHA MINI FOUR 24V

SPEAKER terminal

Speaker connection

POWER supply terminal

GROUND

-> ground terminal

REM -> remote wire (10-32V) / not to be used with high-level input (10)

BATT+

-> +24 Volt wire from battery terminal

Status LEDs

POW -> green

-> ok (correct operation)

PRO

-> red -> error / protection

LINE-IN (RCA input)

Input sockets to connect RCA wires - to avoid any malfunction, it is recommended to use

only high quality RCA cables

Cable recommendation: GCZZ X-TP series (available lengths 0.57 / 1.14 / 3.14 / 5.49

IMPORTANT:

High-level and RCA inputs should

never

be used simultaneously! This may cause serious

damage to the amplifier.

LEVEL control

Controller to adjust the input sensitivity

X-OVER mode

(crossover)

To setup the crossover for the required use of the amplifier

FULL – entire frequency range will be reproduced

HPF – only mid/high frequencies are reproduced according the control (8)

BPF* – only low frequencies are reproduced according the control (9)

*: Set to BPF filter, the high-pass filter (subsonic) will be activated simultaneously resulting

in a band-pass filter (10 Hz 4000 Hz)

HIGH-PASS (HPF) control

To adjust the required crossover point. Frequencies below the selected crossover point will

be filtered (10 Hz to 500 Hz).

This control will also be activated at BPF (7) mode

LOW-PASS (LPF) control

To adjust the required crossover point. Frequencies above the selected crossover point will

be filtered (40 Hz to 4000 Hz)

HIGH LEVEL input

Instead of using the RCA input (4), the high-level input can be used. To connect the

speaker output of the head unit directly. If used, the amplifier turns on automatically

(Auto-On)

The REM (remote) input of the power supply terminal remains unused

IMPORTANT:

High-level input and RCA inputs should

never

be used simultaneously; this may cause

serious damage to the amplifier

Stereo RCA input & output wiring – GZHA MINI FOUR 24V

HIGH LEVEL input wiring – GZHA MINI FOUR 24V

Head Unit

Batterie

max. 20 cm

Sicherung 40A

Remote Leitung

(Steuerung für el. Antenne)

Cinch (RCA) Ausgang

20 A

BRIDGED output wiring – GZHA MINI FOUR 24V

Specifications

Model

GZHA MINI FOUR 24V

Amplifier type

4 channel class D

RMS Power @ 4

Ω

4 x 80 W (1% THD+N)

RMS Power @ 2

Ω

4 x 130 W (1% THD+N)

RMS Power @ 1

Ω

RMS Power @ 4

Ω

Bridged

2 x 260 W

(1% THD+N)

2 x 320 W

(10% THD+N)

Damping factor

> 100

Low pass filter

40 Hz – 4000 Hz (12 dB/Oct)

High pass filter

10 Hz – 500 Hz (12 dB/Oct)

Band pass filter

10 Hz – 4000 Hz (12 dB/Oct)

Frequency response

5 Hz – 38 KHz

(± 1 dB)

Input sensitivity

300 mV – 6 V

(± 5%)

Fuse(s)

1x 20A internal

Dimensions

w x h x l (mm)

135 x 52 x 210

Dimensions

w x h x l (inch)

5.32 x 2.05 x 8.27

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 POW LED turn to green?

Check protection fuse(s) of the amplifier

Check remote wire connection (RCA input

mode)

Check +24 Volt power supply wire connection

Check ground wire connection

Did the PRO LED turned 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 both RCA leads?

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

HYDROGEN-SERIES

VERSTÄRKER

ANLEITUNG

GZHA MINI FOUR 24V

Ausstattungsmerkmale

•Hocheffiziente Class D Mini Verstärker

•Für den Einsatz an 24 V Betriebsspannung

•Extrem kompakte Außenmaße

•2 Ohm stabil Stereo

•High-Level Eingänge mit Auto-On

•Breitbandig regelbare Filter

•Regelbare Eingangsempfindlichkeit

•Einschaltverzögerung

•Temperatur / Kurzschluss / Überlast-Schutz

Empfohlener Kabelquerschnitt

GZHA MINI FOUR 24V

Lautsprecherleitungen

min 1.5 mm²

Stromversorgungsleitungen

min 16.0 mm²

High-Level Eingangsleitung

min 1.00 mm²

Remote Leitung

min 0.75 mm²

Montagehinweise

•Fahrzeugbatterie vor der Installation abklemmen! (Hinweise in der Betriebsanleitung des KFZ beachten!)

•+24 Volt Stromkabel muss max. 20 cm nach der Batterie abgesichert werden. Identischer Sicherungswert, wie die Summe

aller einzelnen Sicherungen der daran angeschlossenen Geräte

•Defekte Sicherungen ausschließlich durch identische Werte ersetzen

•Keine Löcher in den Tank, die Bremsleitung, Kabel oder andere wichtige Fahrzeugteile bohren!

•Kabel niemals über scharfe Kanten führen

•Signal- und Lautsprecherkabel nicht in der Nähe von Antennen-Elektronik oder Antennenkabel verlegen

•Signal- und Lautsprecherkabel grundsätzlich getrennt von Stromkabeln verlegen

•Die Endstufe verfügt über einen thermische Schutzschaltung, welche bei Überhitzung das Gerät abschaltet; nach der

Abkühlung schaltet sich dieses wieder selbstständig ein. Um einen Wärmestau zu vermeiden, sollte für ausreichende

Luftzufuhr zur Kühlung gesorgt werden. Die Oberfläche des Kühlkörpers darf nicht vollflächig abgedeckt werden

•Gerät nicht auf stark vibrierenden Bauteilen oder Oberflächen montieren (z.B. Subwoofer Gehäuse)

•Wenn das Steuergerät (Radio) mit Vorverstärkerausgängen (Cinch) ausgerüstet ist, wird empfohlen, diese zu nutzen

WARNUNG !

Leistungsstarke Car Audio Systeme können extreme Schallpegel, ähnlich denen eines Live-Konzertes, erzeugen. Dauerhaft sehr lauter Musik

ausgesetzt zu sein, kann zu Hörschäden oder sogar zum Hörverlust führen. Außerdem kann laute Musik beim Autofahren die

Wahrnehmung im Straßenverkehr beeinträchtigen. Im Interesse der allgemeinen und der eigenen Sicherheit wird daher empfohlen, während

des Führens eines Fahrzeuges, Musik mit angemessen niedriger Lautstärke zu hören.

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