GZUA 2225SQ - Car stereo Ground Zero - Free user manual and instructions

USER MANUAL GZUA 2225SQ Ground Zero

Abstract geometric pattern with black and white diagonal stripes and cloud-like shapes (no text or symbols)

GROUND ZERO

Mobile Entertainment

Verstärker

Anleitung

Uranium -SQ

Sound-Quality Level

GZUA 2125SQ

GZUA 2225SQ

GZUA 41255Q

Abstract geometric pattern with black-and-white diagonal stripes and a central vertical bar (no text or symbols)

GROUND ZERO

Mobile Entertainment

FRONT + UNIBIL + UNIBIL + UNIBIL + R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R Umped Umped Umped Umped Umped Umped Umped Umped

GZUA 2125SQ / GZUA 2250SQ

R-ch + - UNION + 0% R L REMOTE R OUTPUT MOND OUTPUT L-ch + - + - + - MOND OUTPUT

www.ground-zero-audio.com

e-mail: [e-mail]

Abstract black-and-white geometric pattern with diagonal stripes and a central rectangular shape (no text or symbols)

GROUND ZERO

Mobile Entertainment

Amplifier

Owners Manual

Uranium -SQ

Sound-Quality Level

GZUA 21255Q

GZUA 22255Q

GZUA 41255Q

Abstract geometric pattern with black-and-white diagonal stripes and a central vertical bar (no text or symbols)

GROUND ZERO

Mobile Entertainment

Please read before Installation

Thank you for selecting a Ground Zero SQ (Sound Quality) Amplifier.

We are providing a helpful hints list wich should keep you from Experiencing

unnecessary shut down.

Features

• BB Burr-Brown Products from Texas Instruments Sound Quality Level with high quality parts
• 2Ω stabil Stereo GZUA 4125SQ, GZUA 2125SQ
• 1Ω stabil stereo GZUA 2225SQ
• FULL MOS-FET Technology
- Adjustable Low-pass filter 20Hz-400Hz / 200-4000Hz
- Adjustable High-pass filter 20Hz-400Hz / 200-4000Hz
- Band-pass filter function adjustable with LPF/HPF
- Adjustable Input Sensitivity
• Gold platet RCA Cinch Inputs
• RCA Cinch output (mono) for other subwoofer amplifiers
• Q-Faktor adjustable
• Bass Boost Remote control GZUA 2225SQ

Introduction

Amplifiers provide high-performance sound reinforcement for your mobile audio equipment. It's versatility enables compatibility with optional Equalizer, Frequency Dividing Network Crossovers and other audio processors in a customized system. The Multi-Mode bridging capabilitis allow felixibility in hosting several different speaker configurations.

To achieve optimum performance, it is highly recommend that you read this Owners manual before the installation.

Tools and materials you need

• Screwdriver
  • Electric drill, 3mm
• Mounting screws
  • Power wire min. 20mm ^4
• Groud wire min 20mm^2
• Speaker wire min. 2 × 1,5 ~mm^2

Attention

• As a precaution; it is advisable to disconnect the vehicle's battery before making connection to the +12 Volts supply wing (see owner's manual of your car for further information!)
  • Do not drill holes into the tank, the brake pipe, wires or other important parts of the vehicle
• Never pass wires over sharp angles. It is recommended to buffer the power supply of the amplifier with an capacitor min. 1 Farad.

WARNING

High powered audio systems in a vehicle are capable of generating "Live Concert" high 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 sound such as; horns, 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 da equate space is left, and cooling requirements are met.

b) If your radio/source is equipped with Pre-Amp outputs, it is recommended to utilize them to drive the amplifier

c) Are your components matched? The peak power rating of your speakers must be greater than the Amplifiers. They also must be 2-8 Ohms impedance (This information as normally printed on the speaker magnet). Consider both the length of your loads, and routing when choosing the mounting location. Pre-Amp Input jacks require a length of high quality shielded male to male RCA patch cord.

Mounting your amplifier

a) Select a suitable location that is convenient for mounting, accessible for wiring and has enough 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, use extreme caution, inspect underneath surface before drilling.

Wiring connection

Attention!

mind. 20mm ^2 wires are necessary for power connection

1.) Ground: Ground connection should be passed directly to the car body as short as possible (max. 1m)
2.) +12 Volt: Power connection should be passed directly to the battery. Please pay attention on a correct fuse protection of the installation with an Inline device with a max. wire length to the battery of 30 cm.
3.) Remote turn on: This connection is getting connected with the remote control line of the radio. It is used for turning on and off the amplifier.

Warning

Investigate the layout of you automobile thoroughly before drilling or cutting any holes. Take care when you work near the thanks, lines, or hydraulic lines, and electrical wiring. Don't mount this system so that wire connections are unprotected or are subject to pinching or damage from nearby objects.

The +12 Volt DC power wire must be fused at the battery positive terminal connection. Before making or breaking power connections at this system power terminals, disconnect the +12 Volt wire at the battery end. Confirm your radio / cassette player and / or other equip, mount is turned off while connecting the input jacks and speaker terminals.

If you need to replace the power fuse, replace it only with a fuse identical to that supplied with the system. Using a fuse of different type or rating may result in damage to this system which isn't covered by the warranty.

Connections and adjustments

Adjustments:

All adjustments of the GROUND ZERO SQ-SERIE are located under the upper aluminium cover in the middle. All screws have to be released.

GROUND ZERO

Connections and adjustments

GZUA 4125SQ, GZUA 2125SQ, GZUA 2225SQ Adjustments

GRIN..... here, the Input Level Sensitivity 250mV - 8V is adjusted

HPF FRED.....X-over ( you hear everything from e.g. 20 Hz up)

LPF FREQ X-over (you hear everything till e.g. 200Hz down)

BPF.....Band-pass filter for a certain area of frequency from-to

(you hear everything from 100 Hz to 2000 Hz)

Q-Factor.... adjusting the Q of the filter

SUBSONIC....Filter for the lowest, not hearable frequencies

FLRT.....switch setting for recording every Frequenc

XI .... switch setting the filter HPF/LPF x1 20 Hz - 400 Hz range

X10.....switch setting the filter HPF/LPF x10 200 Hz - 4 Khz range

Balanced / Unbalanced Functionality

The GROUND ZERO S'Q SERIES have the possibility to clear disturbing noises, that creep on the wire to the amplifier (dynamo-whistling, etc). A especial technology, is used for this. The optional circuit of the Cinch inputs is symmetric and asymmetric.

Application BAL/UNBRL

All switches are switched symmetricly on „BRL” in the delivery status. If there are disturbances after the installation, you can turn the switches to „UNBRL” to clear the disturbances. If there are still disturbances, please contact your dealer.

Connections and adjustments

GZUA 4215SQ

GRIN HPF FREQ Q-Factor FRONT + - X1 X30 LFF FREQ Q-Factor + - X1 X30 HPF FLAT OPF + - X1 X30 LFF FLAT + + SUB SONIC + - X1 X30 HPF FLAT OPF + + X1 X30 LFF FLAT + + GZUM 82550 GROUND ZERO

GZUA 2225SQ

GZUM 2225X0 GROUND ZERO GRAV HFF FREQ Q-Factor X1 X10 HFF FLAT SUB SONIC FREQ Q-Factor X1 X10 LPF FLAT

GZUA 2125SQ

GZUA ZISSO GROUND ZERO GRIN HPF FREQ Q-Factor SUB SONIC LPF FREQ Q-Factor XI XIO HPF FLRT LPF XIO LPF FLRT

Connections and adjustments

FRONT INPUT......Cinch connection for Front Input

REAR INPUT......Cinch connection for Rear Input

MOND OUTPUT......Cinch connection for Mono Output (e.g. for more subwoofer amplifiers)

UNBRL....Switch for asymmetrical Input

BRL....Switch for symmetrical Input

FRONT / R-ch.....Speaker Front Output / Right channel

REAR / L-ch.....Speaker Rear Output / Left channel

REMOTE..... bass: remote control connection(GZUA 222590)

GZUA 4125SQ

FRONT + UNIBIL + R R UNIBIL + R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R Umped Umped Umped Umped Umped Umped Umped Umped

GZUA 2125SQ / GZUA 2250SQ

Rich Unknown Remote L-ch + - + - R + - R + - L + - INPUT MAX DIRECTION MOND OUTPUT + - + - L-ch + - + - Inverted Inverted

POWER..... Operation

Blue - Device is turned ON

PROT Protection

Red - Device is in protection circuit

FUSE..... Fuse holder amp fuse

+12V.... + 12 Volt Connection Connection for the power wire from the battery

REM....+ Remote Connection Connection for the remote wire from car radio

GND...... Ground Connection Connection for Ground wire

GZUA 4125SQ

POWER PROF G78M M25W0 GROUND ZERO FUSE 2 x 100A + + + +/-

GZUA 2125SQ GZUA 2250SQ

POWER PROF G708 201500 GROUND ZERO FUSE 2 x 20A - + + - + - + - + - + - + -

Adjustment and Tuning

The amplifier automatically turns on a few seconds after you turn your vehicle's ignitions switch to ACC or ON or turn on your auto sound system, depending on how you wired the system.

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

For the best performance of the amplifier, the input level sensitivity has to be adjusted correctly (8V-250V)

Adjustment of the GAIN Input Level sensitivity (8V-250mV)

For the best performance, you must set LEVEL(MIN/MAX) on the Top of the amplifier to adjust the level of the audio signals.

1. Use a screwdriver o turn LEVEL(MIN/MAX) fully to MIN
2. Turn the auto sound system's volume control to about two-third of its full range.
3. Adjust LEVEL(MIN/MAX) to a comfortable listening level
4. Turn up the auto sound system's volume control until the sound begins to distort. Then immediately turn the volume down to a point just before where the distortion began. Caution: Never up turn the auto sound system's volume control more than needed to adjust the audio level, more than thirds of its maximum volume.
5. Adjust LEVEL(MIN/MAX) until the sound is at the maximum level you want the amplifier two produce.
6. Adjust the auto sound system's volume control to a comfortable listening level.

Attention!

Please note that the gage on a CD, that reproduces music with a higher dynamic is essential higher as on Radio reception.

With the bass remote control, you can readjust the Bass gain from the driver's seat. (GZUA 2225SQ).

If something doesn't work

Problem Control	Help
No Sound	Is the PWR LED on?	Check fuseCheck remote wireCheck +12VoltChock ground
	Is the PROT LED on?	Short circuit on speakerDevice overheatedDevice defective
No Sound		Check fuseCheck +12VoltChock ground
No Sound	No voltage on Remote	Check Remote on radio
Amplifier is turning off at higher volume	Check speaker Impedance	Check if the on LS terminal in min of 2Ω resistance(GZUA 4125SQ, 2125SQ)Check if the resistor on LS terminal 1Ω (GZUA 2225SQ).
No sound at one channel	Check cinch / speaker wire	Wire/ connector damaged

Specifications

Model GZUA 4125SQ	GZUA 2125SQ GZUA 2225SQ
Power RMS @ 4 Ω	4 x 135 2 x 100	2 x 225
Power RMS @ 2 Ω	4 x 225 2 x 175	2 x 375
Power RMS @ 1 Ω	-- 2 x 550
Power Mono @ 4 Ω	2 x 450 1 x 350	1 x 750
Power Mono @ 2 Ω	-- 1 x 1100
Max. Power 1000	400	1200
Input Level Sensitivity 250 mV - 8 Volt 250 mV - 8 Volt 250 mV - 8 Volt
Frequency range 5-30000 Hz 5-30000 Hz 5-30000 Hz
Lowpass LPF x 1	20 Hz - 400 Hz	20 Hz - 400 Hz
Lowpass LPF x 10	200 Hz - 4 Khz	200 Hz - 4 Khz
Highpass HPF x 1	20 Hz - 400 Hz	20 Hz - 400 Hz
Highpass HPF x 10	200 Hz - 4 Khz	200 Hz - 4 Khz
THD	<0,008%	<0,008%
SNR Signal-to-noise ratio	>96 dB/A	>96 dB/A
Damping Factor	>400	>400
Impedance Min.	2 Ω	2 Ω
Fuse	2 x 40 A	2 x 20 A
Dimension:W X D X H (mm)W x D x H (Inches)	350 x 280 x 4913.9" x 11.1" x 1.9"	300 x 280 x 4911.9" x 11.1" x 1.9"
		350 x 280 x 4913.9" x 11.1" x 1.9"

www.ground-zero-audio.com

e-mail: [e-mail]

Abstract geometric pattern with black and white diagonal stripes and a central vertical bar (no text or symbols)

GROUND ZERO

Mobile Entertainment

Amplificateur

Mode d'Emploi

Uranium -SQ

Sound-Quality Level

GZUA 2125SQ

GZUA 22255Q

GZUA 42155Q

Abstract geometric pattern with diagonal stripes and cloud-like shapes (no text or symbols)

GROUND ZERO

Mobile Entertainment

Lire attentivement s.v.p.

FUSE....Porte Fusible

www.ground-zero-audio.com

e-mail: [e-mail]

Abstract black-and-white geometric pattern with no text or symbols

GROUND ZERO

Mobile Entertainment

Versterker

Balanced / unbalanced

GRIN HPF FREQ Q Factor FRONT HPR MTR 100% XIO XIO X1 XIO LPF FREQ Q Factor HPR FLAT 100% XIO X1 XIO LPF FLAT HPR HPF FREQ Q Factor PERR HPR MTR 100% XIO XIO X1 XIO LPF FREQ Q Factor HPR FLAT 100% XIO X1 XIO LPF FLAT SUB SONC GZUM MSSO GROUND ZERO

GZUA 2225SQ

GAIN HPR D-Factor SUB SONG HPR D-Factor X1 X10 HPR FLUT X1 X10 LPG FLUT GAIN 222550 GROUND ZERO

GZUA 2125SQ

GRIN HPF PROJ Q-FACTOR X1 X20 HPF FLAT SUB SINC LPF PROJ Q-FACTOR X1 X20 LPF FLAT GZUN 20550 GROUND ZERO

Aansluitingen

REMOTE...... Aansluiting Bass remote

GZUA 4125SQ

FRONT + - R INDIR + - R R L INDIR + - R L REFR + - R R + - R R + - R R + - R R + - R R + - R R + - R R + - R R + - R R + - R R + - R R + - R R + - R R + - R R + - R R + - R R + - R R + - MRO OUTPUT

GZUA 2125SQ / GZUA 2250SQ

Rch LHWR PN L PENOTE L-ch OUTPUT CONTROL MOSS OUTPUT

POWER.....Inschakel LED Blauw

PROT....Fout melding Rood

FUSE......Zokering