Ground Zero HYDROGEN SERIES Manuel utilisateur

HYDROGEN-SERIES

Mono Amplifier

Owner’s manual

GZHA MINI ONE-K

Features

•High-efficient class D amplifier technology

•Installer friendly dimensions

•1 ohms stable / 2 ohms (in linked configuration)

•High-level input with auto-on function

•12 dB adjustable bass boost (@45 Hz)

•Adjustable low pass filter

•Adjustable input sensitivity

•Adjustable subsonic filter

•0° / 180° Phase shift switch

•Bass remote control

•Thermal / short circuit / overload protection

Gerenal 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 sufficient for the required current!)

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

•Never drill a hole to the vehicles gas tank or 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,

sufficient 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 them.

Controls & Features

SPEAKER terminal

Speaker connection

POWER supply terminal

GROUND - ground terminal

REM - remote wire / not to be used together with high-level input

BATT+ - +12 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.

Attention

: 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

BASS BOOST control

Controller to adjust the bass boost level (0 to +12 dB at 45 Hz)

SUBSONIC filter

To adjust the required crossover for subsonic frequencies. Those frequencies below the

selected crossover point will be filtered (10 Hz to 50 Hz).

LOW-PASS (LPF) control

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

be filtered (30 Hz to 250 Hz)

HIGH LEVEL input

As an alternative to the RCA input (4), the high-level input can be used to connect the

speaker output of the head unit directly. The amplifier turns on automatically (Auto-On) while

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

Attention

: High-level

and RCA inputs must

never

be used simultaneously! This may cause damage to the amplifier

LINE OUT / OUTPUT

Fullrange RCA output to connect further amplifiers

REMOTE socket

To connect the bass remote control

BRIDGED socket

To connect an RCA cable for link mode operation

High quality RCA cable is recommended (max. 1.5m / 4.9 ft)

BRIDGED mode switch

(MASTER / SLAVE)

To select the operation mode of the amplifier (see also link mode diagram)

PHASE CONTROL switch

To select the phase of the connected subwoofer in relation to further speakers (0° / 180°)

RCA input wiring

High-level input wiring

Link mode mode wiring

Ø min. 4 mm² / 11 AWG

Specifications

Model

GZHA MINI ONE-K

Type

Mono Class D

RMS Power @ 4

Ω

CEA Standard CEA-2006-A

340 W (1% THD+N)

RMS Power @ 2 Ω

CEA Standard CEA-2006-A

600 W (1% THD+N)

RMS Power @ 1 Ω

CEA Standard CEA-2006-A

1000 W (1% THD+N)

RMS Power @ 2Ωlink mode

CEA Standard CEA-2006-A

2000 W (1% THD+N)

2300 W (10% THD+N)

Damping factor

> 100

Low pass crossover

30 Hz – 250 Hz (24 dB/Octave)

High pass crossover (subsonic)

10 Hz – 50 Hz (24 dB/Octave)

Band pass crossover

10 Hz – 250 Hz (24 dB/Octave)

Bass boost

0 ~ +12 dB (45 Hz)

Frequency range

10 Hz – 250 Hz

(± 1 dB)

Input sensitivity

300 mV – 6 V

(± 5%)

Bass remote control



Fuse(s)

3 x 35 A

Dimensions (B x H x L)

135 x 52 x 322 mm

5.32 x 2.05 x 12.68”

Trouble shooting guide

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 +12 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 units volume / wait for cooling

Speaker wires short / speaker damaged Check speaker / wires and insulate if necessary

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

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