GZNA 1.2500DXII - Car stereo Ground Zero - Free user manual and instructions

USER MANUAL GZNA 1.2500DXII Ground Zero

Limited warranty - defective products must be returned in original packaging - please add a copy of the original purchasing invoice showing the purchasing date and a detailed description of the failure. Failure caused by overload, misuse or by using the product for competition purpose are not covered by the warranty.

www.ground-zero-audio.com

We reserve the right to make needed change or improvement to the product without informing customer about this in advance.

Thank you for selecting a Ground Zero amplifier.

We are providing a helpful hints list which should keep you from experiencing

unnecessary shut down.

Have fun with this high quality Nuclear product.

Nuclear amplifier

Due to their state-of-the-art technology and high efficiency, these Class-D mono amplifiers help your system to provide an impressive sound experience.

The digital circuit technology of the power supply and the signal processing allows achieving maximum performance levels from the provided power. Due to the different fibers and circuits a very high power output is achieved, therefore these amplifiers are made for low frequency information (Subwoofer). They can not be used for high- and midrange speakers.

The link mode enables to use to full power of two amplifiers for one speaker. This is first of all advantageous for a really powerful and lively music playback.

Features

• Class-D Design for high efficiency

• Stabilized dual power supply

• Damping factor >180 at 100 Hz 4Ω

- 16 Volt max. Voltage supply

- Linkable with 1 amplifier

• 1 Ω stable (Linkmode 2Ω)

• Full Power MOS-FET amplifier

• Power and Protection Indicator

• Variable lowpass 30 – 250 Hz

• Variable subsonic 5 – 50 Hz

- 180^ variable Phase Shift

- Aluminum heat sink

- Adjustable input sensitivity 200mV \~ 9 Volt

• RCA Inputs & Outputs

• Bassremote Control

• 0 \~ +9dB Bassboost (30 - 80 Hz)

Tools and materials you need

• Screwdriver
  • Electric drill, 3 mm / 0.12" carbide drill bit
• Mounting screws
  • Power wire min. 35 mm² / 2 AWG
  • Ground wire min. 35 mm² / 2 AWG
• Speaker wire min. 2 × 4 ~mm^3 / 11 AWG

Please note!

• As a precaution it is advisable to disconnect the vehicle's battery before making connection to the +12 Volts supply wiring (see owner's manual of your car for further information).
• Please use great caution drilling your trunk. Your gas tank and brake lines can be damaged by puncturing with your drill bit – this could cause damage or failure of your cars operating systems.
• Never pass wires over sharp angles. It is recommended to buffer the power supply of the amplifier with an additional battery (GZBP 12.2500 or GZBP 12.3500) to guarantee a stable operation voltage.

WARNING!

High powered audio systems in a vehicle are capable of generating "Live Concert" levels of sound pressure. Continued exposure to excessively high volume sound levels may cause hearing loss or damage. Also, operation of a motor vehicle while listening to audio equipment at high volume levels may impair your ability to hear external sounds such as: home, warning signals, or emergency vehicles, thus constituting to a potential traffic hazard. In the interest of safety, Consumer Electronics recommends listening at lower volume levels while driving.

Planning your system

Before beginning the installation, consider the following:

a. If you plan to expand your system by adding other components sometime in the future, ensure adequate space is left, and cooling requirements are met.
b. If your radio is equipped with preamplifier outputs (RCA), it is advisable to use them.

Mounting your amplifier

a. Select a suitable location that is convenient for mounting, is accessible for wiring and has ample room for air circulation and cooling.
b. Use the amplifier as a template to mark the mounting holes, remove the amplifier and drill 4 holes. Then mount the amplifier with the mounting screws.

Warning

Chose a mounting position where all eclectic wires are protected from being damaged by sharp edges, heat or other conditions. +12Volt DC electrical connections must be fused on the battery side. Make sure your radio and all other devices will be turned off while connection your system.

This amplifier has now internal fuse. Therefore it is absolutely necessary to connect the ANL-fuseholder (included in delivery) with its 200 A fuse. The cable length between amplifier and fuseholder must not be longer than max 20 cm / 7.9". Please see the connection diagram on the following side for correct wiring.

Power connection

To remote turn on of head unit Cable length max 8" 200 A ANL Fueseholder (Included in Delivery) Recommended Fuse 200 A (e.g. GZFH 200) Cable length max 8" Ground Battery 5

Controls and functions

Front Rear 6

Controls and functions

1 Speaker terminals For connection of the subwoofer
2	Power terminals	GND -> Ground connection REM -> Remote antenna terminal BATT -> +12 Volt
3 Satus Indication		BLUE - OK RED - Error
4 Cinch Inputs		Terminal for connection of the RCA wires. To avoid failure, please use high quality RCA wires.
5 Input level controlle r		With this controller you can adjust the input sensitivity.
6 Bass boost controlle r		For adjusting of the bass boost level in the range from 0 to +9 dB.
7 Bass frequency controller		For adjusting of the bass boost frequency in a range from 30Hz to 80Hz.
8 Subsonic controller		This controller allows you to filter low frequencies in a range between 5 and 50 Hz. This function reduces the mechanical Xmax and raises the capacity of the connected subwoofer.
9	Cinch Outputs	For connection of additional amplifiers.
10 Low pass controller		Adjust the variable lowpass frequency to the desired frequency between 30 and 250 Hz using the controller.
11 Phase shift controller		This controller allows you to fit the subwoofer channel in-phase to the front system.
12	Remote control input	For connection of the bass remote control.
13	Slave In connection	For connection of the slave amplifier in link mode. See page 8
14	Master Out connection	For connection of the master amplifier in link mode. See page 8
15	Master / Slave Switch	For choosing the operation mode of each amplifier in link mode. See page 8
16	Capacitor connection	For connection of a optional powercap.

Turning on the amplifier

The amplifier automatically turns on a few seconds after you turn on your radio.

Note: Your amplifier temporarily shuts down if it gets too hot, then restarts automatically once it cools

(At about 80° / 176° F).

Adjusting the audio level

1. LEVEL (Min/Max): Turn fully counter-clockwise to MIN position
2. Turn the auto sound system's volume control to about two-third of its full range.
3. Adjust LEVEL to a comfortable listening level.

Connecting the speaker

SUBWOOFER 1~8 Ohm To car stereo Line Out To Input of additional amplifier

Master & Slave operation

Speaker Impedance 2 Ohm GZNR 1.25000XII GZNR 1.25000XII

8

Specifications

Model GZNA 1.2500DXII
RMS Power @ 4 ΩCEA Standard CEA-2006-A	850W (1% THD+N)1100W (10% THD-N)
RMS Power @ 2 ΩCEA Standard CEA-2006-A	1500W (3% THD+N)2000W (10% THD+N)
RMS Power @ 1 ΩCEA Standard CEA-2006-A	2300W (1% THD+N)3000W (10% THD+N)
RMS Power @ 2Ω LinkmodeCEA Standard CEA-2006-A	1 x 4600W (1% THD+N)1 x 6000W (10% THD+N)
Damping factor > 180
Signal to noise Ratio > 90 dB
Lowpass 30 - 250 Hz (24 dB)
Bandpass 5 Hz - 250 Hz (24 dB)
Subsonic filter 5 Hz - 50 Hz (24 dB)
Bass boost 0 ~ +5 dB
Bass boost Frequency 30 Hz ~ 80 Hz
Phase shift 0 - 180°
Frequency response 5 Hz - 250 Hz
Efficiency @ 4 Ω ~ 80 %
Input sensitivity	200 mV - 9 V(+ 5%)
THD < 0,50 %
Bass remote	√
Fuse	External ANL-fuse 200A(included in delivery)
DimensionsW x H x L inch	305 x 62 x 450
DimensionsW x H x L inch	12 x 2,44 x 17.7"

Trouble shooting guide

Symptoms Check Points Cure
No sound	Is the POWER LED illuminated?	Check fuses in amplifier.Be sure remote lead is connected.Check signal leads.Check again control.Check tuner/deck volume level.
	Is the diagnostic LED illuminated?	Check for speaker short or amplifier overheating
Amp not switching on	No power to the amplifier	Check power wire or connections
	No power to remote wire with receiver on	Check connections to radio
No sound in one channel	Check speaker leads	Inspect for short circuit or an open connection
	Check audio leads	Reverse left and right RCA inputs to determine if it is occurring before the amp
Amp turning off at medium / high volume	Check speaker load impedance	Be sure proper speaker load Impedance recommendations are observed(If you use an ohm meter to check speaker resistance, please remember that DC resistance and AC Impedance may not be the same.)
Protection LED is on	Temperature shut down	Turn radio volume down
	Speaker wires short	Separate speaker wires and insulate

Limited warranty - defective products must be returned in original packaging - please add a copy of the original purchasing invoice showing the purchasing date and a detailed description of the failure. Failure caused by overload, misuse or by using the product for competition purpose are not covered by the warranty.

www.ground-zero-audio.com

We reserve the right to make needed change or improvement to the product without informing customer about this in advance.

Operation Master & Slave

Impédance haut parleur 2 Ohm 6ZNR 1.2500DXII 6ZNR 1.2500DXII

Données Techniques

Model GZNA 1.2500DXII
RMS Power @ 4 ΩCEA Standard CEA-2006-A	650W (1% THD+N)1100W (10% THD+N)
RMS Power @ 2 ΩCEA Standard CEA-2006-A	1500W (1% THD+N)2000W (10% THD+N)
RMS Power @ 1 ΩCEA Standard CEA-2006-A	2300W (1% THD+N)3000W (10% THD+N)
RMS Power @ 2Ω LinkmodeCEA Standard CEA-2006-A	1 x 4600W (1% THD-N)1 x 6000W (10% THD-N)
Damping facteur	> 180
Signal to noise Ratio	> 90 dB
Filtre passe bas	30 - 250 Hz (24 dB)
Bandpass	5 Hz - 250 Hz (24 dB)
Filtre subsonic	5 Hz - 50 Hz (24 dB)
Bass boost	0 ~ +9 dB
Bass boost fréquence	30 Hz ~ 80 Hz
Phase shift	0 - 180°
Courbe de fréquence	5 Hz - 250 kHz
Efficaciter @ 4 Ω	~ 80 %
Sensibilité d'entrer	200 mV - 9 V(+ 5%)
THD	< 0,50 %
Bass télécommande	√
Fusible	La protection ANL Extercours 200 A(Dans la boite de livraisons)
Dimensionlargeur x hauteur x longueur mm	305 x 62 x 450
Dimensionlargeur x hauteur x longueur inch	12 x 2.44 x 17.7"

Limited warranty - defective products must be returned in original packaging - please add a copy of the original purchasing invoice showing the purchasing date and a detailed description of the failure. Failure caused by overload, misuse or by using the product for competition purpose are not covered by the warranty.

www.ground-zero-audio.com

We reserve the right to make needed change or improvement to the product without informing customer about this in advance.

To remote turn on of head unit Cable length max 8" 200 A ANL Fuseholder (Included in Delivery) Recommended Fuse 200 A (e.g. GZFH 200) Ground Battery Ground 4

MINT100000 MINT MINT MINT MINT ② ③ ④

SUBWOOFER 1~8 Ohm To car stereo Line Out To Input of additional amplifier

Linkkauskytkentä

RUM SLAVE MASTER GZNR 1.2500DXII Speaker Impedance 2 Ohm GZNR 1.2500DXII

Tekniset tiedot

Mall GZNA 1.2500DXII
RMS Teho ♂ 4 ΩCEA Standard CEA-2006-A	650W (1% THD+N)1100W (10% THD+N)
RMS Teho ♂ 2 ΩCEA Standard CEA-2006-A	1500W (1% THD+N)2000W (30% THD+N)
RMS Teho ♂ 1 ΩCEA Standard CEA-2006-A	2300W (1% THD+N)3000W (30% THD+N)
RMS Teho ♂ 2Ω LinkattunaCEA Standard CEA-2006-A	1 x 4600W (1% THD+N)1 x 6000W (18% THD+N)
Vainmeinuskerroin	>
Hairnetaaiyyss > 90 dB
Allpäistösuodin 30 – 250 Hz (24 dB)
Kraistanpaärsti 5 Hz – 250 Hz (24 dB)
Subsonic suodin 5 Hz – 50 Hz (24 dB)
Bassonkorostus 0 ~ +9 dB
Bassonkorostuksen kcskitaajuus 30 Hz ~ 80 Hz
Valheenkääntö 0 – 180°
Taejuuswaste 5 Hz – 250 Hz
Hydtysubde ♂ 4 Ω ~ 80 %
Sisopantulotaso	200 mV – 9 V(+ 5%)
THD < 0,50 %
Bassonkatukossädin	√
Sulake	Ulkoinen ANL-sulake 200A(Mukano)
MitatW x H x L mm	305 x 62 x 450
MitatW x H x L inch	12 x 2,44 x 17,7"

Limited warranty - defective products must be returned in original packaging - please add a copy of the original purchasing invoice showing the purchasing date and a detailed description of the failure. Failure caused by overload, misuse or by using the product for competition purpose are not covered by the warranty.

www.ground-zero-audio.com

We reserve the right to make needed change or improvement to the product without informing customer about this in advance.