GROUND ZERO GZIB 20BR-ACT Iridium Series Active Vented Subwoofer Owner’s Manual

GROUND ZERO GZIB 20BR-ACT Iridium Series Active Vented Subwoofer

Features

• High-Quality vented active subwoofer
• KLIPPEL® optimized
• IMPP cone with 3D-honeycomb structure
• Solid enclosure made from MDF
• Flow optimized bass tunnel
• Class A/B MOSFET amplifier
• Adjustable bass boost
• Phase shift option (phase switch)
• Low pass filter (30 – 120 Hz)
• High-level input with auto-on function
• Optionally available remote control (GZTA Bassremote)

Introduction

Thank you for choosing a great GROUND ZERO product! We hope you will enjoy this product from the IRIDIUM series. This owner´s manual contains information you need to use this product. Please read it carefully in order to achieve the best possible result. Your car audio specialist or our customer support will answer further questions about the product and its use. Subwoofers are an important part of your car audio system. Please keep in mind, however, that they can only achieve their full performance if all other components of the entire system are carefully coordinated with one another. It is therefore recommended to consult a car audio specialist dealer or workshop for the assembly of the system and its installation and sound adjustments.

Series Top Performance

Representing the entry-level of GROUND ZERO, the IRIDIUM series offers many useful features and amazing performance. The line-up contains a variety of affordable amplifiers, speakers and subwoofers for daily use and even for SPL purpose. Apart from subwoofer drivers, there are loaded passive and active enclosures available in different sizes for many applications and demands.

General installation note

• Never drill a hole to the vehicle´s gas tank or brake lines, to wirings or any other important vehicle parts!
• Never pass wires over sharp edges or vehicle parts to 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
• Use adequately dimensioned power and speaker wires to connect the component

Safety instructions

Safety instructions:
Keep all parts of the content and the packaging away from children and pets to avoid accidents and the risk of suffocation. Permanently extreme levels of over 85 dB can lead to irreparable damage to the hearing. Music systems with high amplifier output power can reach levels of 130 dB or more. Extreme levels can also hinder the perception of important traffic noises and distract from what is happening on the road. Ground Zero GmbH and its sales partners expressly assume no responsibility for hearing damage, physical damage or any damage to property or consequential damage resulting from improper or careless use or improper installation of its products. In particular, any claims are forfeited through the use under competitive conditions.

Manufacturer‘s declaration:
Herewith Ground Zero GmbH declares that this product complies with the directive 2014/30/EU (EMC) and further declares that this product is in conformity with the rules of the EU directives (including all applicable amendments) 2011/65/EU RoHS2 and 2001/95/EC General Product Safety Directive. The full text of the Declaration of Conformity (EU) is available at the following internet address: www.ground-zero-audio.com. Electronic products contain valuable raw materials and must not be disposed of with normal household waste. At the end of its service life, please bring the device to your local recycling facility.

Terms of warranty

The limited warranty for this product is covered by GROUND ZERO´s regional distribution partners and their terms and conditions. For further information contact your local retailer or distributor.

Specifications

15.75” x 10.63” x 12.01”/9.65”

17.32” x 12.60” x 11.22”/14.17”

18.11” x 14.57” x 12.20/15.75”

Connections and functions

Amplitier module

Lights up in operation mode

2| Protection indicator

Lights up in case of a defect or overheating

3

| Fuse

In the event of an internal defect or excessive load, this fuse can protect the electronics from major damage. A defective fuse may only be replaced with a new fuse of the same type and value.

4

| Connector for the power supply

REM      Power on remote connection GND     Ground connection

B+        +12 Volt (battery)

Note: When using the high level input, it is unnecessary to connect the remote wire

Important: Please use an adequate power and ground wire (at least 6 mm²) for the power supply

5

| High level input

The harness of the high level input terminal should be connected directly to the speaker output of the head unit

Auto-on function

The auto-on function of the high level input enables using the amplifier without any additional remote connection. The unit will turn on automatically as soon as a signal is recognized

Attention! Do not use the high- and low level input simultaneously

6

| Low level input (RCA)

Left (L) and right (R) channel input of the amplifier. To be connected to the pre-amplified output of a source unit (head unit) or of an external electronic crossover

7

| Remote connector

To connect the optionally available bass level remote control unit

8| GAIN – Input level control To adjust the input sensitivity
9| Bass Boost control

To adjust the bass increment (0 – 12 dB)

10| Phase shift switch

0° (NOR.) or 180° (REV.) switchable

11| Low pass crossover

To adjust the cut-off frequency (30 Hz ~ 120 Hz)

High-level input connection

Troubleshooting guide

No audible signal

|

Does the PWR LED light up?

| Check the fuse

Check the power wiring Check the remote wire

No audible signal| Does the PROT LED light up?| Overheat protection active Defect or damage

Amplifier does not switch to operation mode

| No power supply (at the amplifier)| Check the fuse

Check the power wiring Check the remote wire

Amplifier does not switch to operation mode| No remote voltage| Check the remote wire output of the head unit

No signal audible

|

RCA cable or speaker wires

| Replace the RCA cable Check the polarity of the speaker wires

Verified with KLIPPEL

GROUND ZERO is using the worldwide accepted KLIPPEL® R&D Analyzer KA3 measurement system for speaker development during the German in-house development as well as for QC reporting for most production lines at the factory. The results of LPM and LSI measurements are the basis for evaluating and verifying further development enabling to offer of perfectly working products in any practical application. Continuous and advanced training for developing employees ensure the highest possible qualification.

The Linear Parameter Measurement (LPM) module of the KLIPPEL® Analyzer System is dedicated to identifying the electrical and mechanical small signal (Thiele/Small) parameters of electro-dynamical transducers with high accuracy. It is based on the electrical impedance by measuring the voltage and current at the speaker terminals. An additional benefit of the displacement measurement is the identification the suspension creep parameters, resulting in better accuracy of the loudspeaker model at low frequencies. The LPM provides tools to identify and avoid typical problems such as poor signal-to- noise ratio and malfunction due to nonlinear effects of the driver or amplifier limiting.

The Large Signal Identification (LSI) module measures the linear, nonlinear and thermal parameters of transducers operated in free air. The transducer is operated under normal working conditions (vertical position and fixed clamped in a laser stand or enclosure). Starting in the small-signal domain, the amplitude is gradually increased up to limits admissible for the particular transducer. The maximal amplitude is determined automatically using the identified transducer parameters and general protection parameters describing the thermal and mechanical load. The identification of the model parameters is performed in real time with an adaptive system. It is based on the estimation of the back EMF from the voltage U(t) and current signal I(t) measured at the electrical terminals. The identified model allows locating the sources of the nonlinear distortion and their contribution to the radiated sound. The dynamic generation of a DC-part in the displacement, amplitude compression and other nonlinear effects can be investigated in detail. After the initial identification, a temporal parameter variation and long-term thermal effects can be investigated.

KLIPPEL® R&D hardware and dB-Lab software for LPM/LSI measurements meet the following standards:

Consumer Electronics Association
CEA-2031(LSI module)

International Electrotechnical Commission

• IEC 60268-5, IEC 60268-7, IEC 60268-22, IEC 62458,
• IEC 62459, IEC WD 63034

European Standards

• BS EN 54-24

Audio Engineering Society

• AES2

Institute of Electrical and Electronics Engineers

• IEEE 269, IEEE 1206, IEEE 1329, IEEE 1652

Respect the Music

Listening to music can be emotional, impressive, relaxing or enjoyable. At that, it doesn´t really matter what kind of music is the personal favorite, whether it´s Instrumental, Jazz, Electro, Latin, Classic, Rock or any other music direction. However, audio reproduction quality at each desired volume is elementary. Some music styles require higher levels while others prefer the soft tones. GROUND ZERO considers all the different wishes of customers during the development of new products. Along with this, the target is to create the most realistic sound, to transfer the soul of the music and the intention of the performer. Summarized to one phrase: RESPECT THE MUSIC.

References

• Ground Zero Audio – Car Audio Products

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