GZUA 1.1000DX - Car stereo Ground Zero - Free user manual and instructions

Product Type	Class D mono amplifier for subwoofer
Brand	Ground Zero
Model	GZUA 1.1000DX
Dimensions (W x H x D)	170 x 53 x 280 mm
Weight	Approx. 2.5 kg
Power Supply	DC 10V ~ 16V, battery cable min. 25 mm²
Maximum Power @ 1 Ω (10% THD)	1 x 1250 W
Maximum Power @ 1 Ω (1% THD)	1 x 1000 W
Maximum Power @ 2 Ω (1% THD)	1 x 600 W
Maximum Power @ 4 Ω (1% THD)	1 x 350 W
RMS Power in Link (2 Ω, 14.6 V, 1% THD)	1 x 2000 W
Signal-to-Noise Ratio	> 90 dB
Adjustable Low-Pass Filter	30 Hz ~ 250 Hz
Adjustable Subsonic Filter	10 Hz ~ 70 Hz
Bass Boost	0 ~ +9 dB at 45 Hz
Adjustable Phase Shift	0° ~ 180°
Minimum Impedance	1 Ω (in link 2 Ω)
Efficiency @ 4 Ω	86%
Input Sensitivity	200 mV ~ 10 V
Inputs and Outputs	RCA, bass remote included
Maintenance and Cleaning	Clean with a soft, dry cloth. Avoid moisture.
Safety	Protection against short circuit, overheating, and overvoltage. Automatic shutdown in case of overheating.
Spare Parts and Repairability	Repairs must be carried out by a professional. Use original parts.
General Information	High-efficiency Class D mono amplifier, aluminum chassis, compatible with Master/Slave link for double power.

Frequently Asked Questions - GZUA 1.1000DX Ground Zero

What is the maximum power of the GZUA 1.1000DX amplifier?

The maximum power is 1250 W under 1 Ω with 10% distortion. Under normal use (1% THD), it reaches 1000 W under 1 Ω, 600 W under 2 Ω, and 350 W under 4 Ω.

How to connect two amplifiers in Master/Slave link?

Use an RCA cable to connect the line output of the master amplifier to the line input of the slave. Ensure that the total impedance is not less than 2 Ω. The combined power can reach 2000 W RMS.

What type of power cable is recommended?

A battery cable of at least 25 mm² (3 Gauge) is recommended. The ground cable should be as short as possible (max. 1 m) and of the same gauge.

What to do if the PROTECTION indicator lights up?

The PROTECTION indicator lights up in case of speaker short circuit, overheating, or internal fault. Check speaker connections, impedance (do not go below 1 Ω), and ensure adequate ventilation.

How to adjust the input level (INPUT LEVEL)?

Turn the INPUT LEVEL control fully to the left (MIN). Increase the volume of the audio source to 2/3 of maximum. Then turn the control until you get a clear sound without distortion.

What is the minimum supported impedance?

The amplifier is stable down to 1 Ω under normal use. When linked with a second amplifier, the minimum impedance is 2 Ω.

Can I use this amplifier with a car stereo without RCA output?

Yes, but you will need to use a high-level adapter (speaker-to-RCA signal converter). However, it is preferable to use the Pre-Amp (RCA) outputs of the car stereo for a better signal.

How to install the bass remote (Bassremote)?

The bass remote connects to the dedicated input on the amplifier (Bassremote control). Mount it in an accessible place in the vehicle to adjust the bass level in real time.

Does the amplifier heat up normally?

Yes, a Class D amplifier has an efficiency of 86% and generates heat. It is normal for it to get hot. Ensure good air circulation around the unit. In case of overheating, the protection activates and the amplifier automatically shuts off.

What settings are available for the low-pass filter?

The low-pass filter is adjustable from 30 Hz to 250 Hz. The subsonic filter is adjustable from 10 Hz to 70 Hz to cut very low frequencies. Use the bass boost (0 to +9 dB at 45 Hz) and the phase shift (0° to 180°) to fine-tune the sound.

USER MANUAL GZUA 1.1000DX 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 GROINO ZERO Uranium amplifier. We are providing a helpful hints list

which should keep you from experiencing unnecessary shut down

Introduction Class-D Amplifier

Amplifiers provide high-performance sound reinforcement for you 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 capabilities allow flexibility in hosting several different speaker configurations.

To achieve optimum performance, it is highly recommend that you read this owner's manual before beginning the

installation

Features

Class-D High Power Amp
Effciency>86%
Banning 1040 at
-
1254e (CHHnOe 217)
MOS-FET PWM POWER SUPPLIES
Power and Protocat
C
1002
100P952H
- 41
1
-
Correlation voltage: DC 10V (a) 15V (b)
3Gauge/25mm²balletryInputConnections

Tools and materials you need

Screwdriver, electric drill 1/8 carbide drill bit
Use 3 AWG power wire (min. 25mm^2
Ground your amplifier one meter close to installation location
Use 13 AMF speaker wite or hower from your apoliter to your speakers
Look for bars in the path of your wires and file the flet to avoid puncture.
Use 16 AWG wire for remote trigger

Note all wire gauges are based on stranded wire with polarity indicators on two wire configurations.

Caution!

• Please use great caution drilling your trunk, your gas tank and brake lines can be damaged by puncturing with your drillbit - this could cause damage or failure of your cars operating systems.
• 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).
• 3 AWG / min. 25mm^2 (thicker if planning for additional amplifiers) wire is recommended both the power and grounds. Both types are available at most Mobile audio dozers or installation shops.

WARNING

High powered audio systems in a vehicle are capable of generating "Live Concert" high level 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. For safety reasons we recommends listening at lower volume levels while driving.

Planning your system

a) select a suitable location that is convenient for mounting, is accessible for wiring and has enough room for air circulation and cooling.
b) If your radio is equipped with preampifier outputs (RCA), it is advisable to use them.

Mounting your amplifier

• Select a suitable location that is convenient for mounting, is accessible for wiring and has ample room for air circulation and cooling.
• Use the amplifier a template to mark the mounting holes, remote the amplifier and drill 6 holes (use extreme caution, inspect underneath surface before drilling!)
• Secure the amplifier using the screws provided

Connections

Connections

1.) GROUND: To vehicle Chassis

To avoid ignition noise caused by ground loops, it is necessary that the amplifiers be grounded to a clean, bare metal surface of the vehicles chassis.
NOTE: GROUND WIRE SHOLD NOT BE EXTENDED MORE THAN 3 FT.(1 Meter) min. 0 AWG/50mm²
2.) Remote Turn-On Input: to power antenna output of Car Stereo
This amplifier is turned ON'remotely when the vehicle's stereo is turned ON'.

3.) +12 Volt (Fused) Constant power: To Battery (+)

Due to the power requirements of the amplifier, this connection should be made directly to the positive (+) terminal of battery. For safety reasons, install an in-line fuse holder (not included) as close to the battery positive (-) terminal as possible with a rating not exceeding value of fuses in amp.

Turning on your amplifier

The amplifier automatically turns on a few seconds after you turn your vehicle's ignitions switch to ACC ON or turn on your auto sound system, depending on how you wired the system. The POWER LED on the side of the amplifier lights when the amplifier is on.
Important: Your amplifier requires 30 amps or more of power from your vehicle's battery during operation. To protect your battery from discharging, do not operate the amplifier unless your vehicle is running.
Note: Your amplifier temporarily shuts down if it gets too hot, then restarts automatically once it cools down.

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

1. Use a screwdriver to 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 turn up the auto sound system's volume control more than needed to adjust the audio level, more than two 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.

Turning on your amplifier

RCA Connections
■ Single Amp Input Connection

5

RCA Connections
■ Dual Amp Input Connection [MASTER & SLAVE PCA Connection]

6

Single amp power & speaker connection

7

Dual amp power & speaker connection - Linkmode

Using a dual amplifier configuration, the MASTER amplifier has total control over the SLAVE amplifier. For the linkmode we recommend NOT to use an external link-module.

Caution!

When utilizing the dual amplifier configuration it is important to note that the connected speaker load can be no lower than 2 ohms. Connecting a lower impedance load can damage the amplifier and void your warranty.

8

Trouble shooting

This power amplifier has protection features to prevent any damages from misuse or faulty conditions. If the unit senses excessive heat, short circuited speakers or overload, the protection indicators will light, and the system will be turned off. In order to check the occurred problem, you should turn all levels down and all power off and carefully check the installation for wiring mistakes or short. If the amplifier shuts down due to excessive heat, the protection indicators will not light: simply allow time for the unit to cool. Before removing your amplifier, refer to the list below and follow the suggested procedures. Always test the speakers and their wires first.

Problem Check points
Amplifier is not powered up	·Check that there is battery power on the +12V terminal. ·Check that remote terminal has at least +12V DC remote connection. ·Check a good ground connection. Check all fuses. ·Check the protection LED is not lit.
Protection LED illuminates when amplifier is powered up	·Check shorts on speaker wires. ·Remove speaker wires and reset the amplifier. If the protection LED still comes on, then the amplifier is faulty.
Fuse blowing	·Check that the minimum speaker impedance is correct. ·Check short on power cable and vehicle chassis.
Overheating	·Check that the minimum speaker impedance is correct. ·Check speaker shorts. ·Check that there is a good airflow around the amplifier.
Sound too low / Distorted sound	·Check that the input level control is set to match the output level of the unit. ·Check the head unit volume. ·Check speaker shorts. ·Check that crossover frequencies have been properly set.
High hiss / engine noise in speakers	·Check a good ground and for speaker shorts. ·Disconnect all RCA inputs from the amplifier. If hiss/noise disappears, check it with a good RCA interconnect. Then check the component driving the amplifier.

Specifications

Model GZUA 1.1000DX
RMS power @ 1 Ω, 10% THD CEA Standard CEA-2006-A	1 x 1250W
RMS power @ 1 Ω, 1% THD CEA Standard CEA-2006-A	1 x 1000W
RMS power @ 2 Ω, 1% THD CEA Standard CEA-2006-A	1 x 600W
RMS power @ 4 Ω, 1% THD CEA Standard CEA-2006-A	1 x 350W
RMS power @ 2Ω Linkmode 14,6 V, 1% THD	1 x 2000 W
Damping factor	>140 (100Hz @ 4 Ω)
Signal to noise ratio >90 dB
Lowpass crossover 30Hz ~ 250Hz
Subsonic Filter 10Hz ~ 70Hz
Bass boost 0 ~ +9dB
Bass boost Frequency 45Hz
Phase shift 0 ~ 180°
Frequency range	10Hz ~ 250Hz (+/-1dB)
Efficiency @ 4 Ω 86%
Input sensitivity 200mV to 10V (+/-5%)
Dimensions W x H x L mm	170 x 53 x 280 mm
Dimensions W x H x L inch	6.69" x 2.00" x 11.02"

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.

Single amp power & speaker connection

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.

wwwground-zero-audio.com

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

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.

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