GROUND ZERO GZCS 100.2BMW Car Specific Series Component Loudspeaker System Owner’s Manual

: June 10, 2024
: Ground-Zero

Table of Contents

Features
General installation note
Safety instructions
Verified with KLIPPEL®
Terms of warranty
Mounting
Crossover
Specifications
Respect the Music
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

CAR SPECIFIC SERIES
Component Loudspeaker System
GZCS 100.2BMW
Owner´s manual
(AWV2.1)

Features

BMW-specific* 2-way loudspeaker system
Klippel® optimized midwooferwith neodymium motor and glass fiber cone
GZ design aluminum cast basket
25 mm / 1” silk dome tweeter with rear ventilation
12/6 dB/oct crossover with level adjustment
Plug & Play connectors for BMW
GZ design aluminum mounting frame for BMW*

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: Hereby, Ground Zero GmbH declares that this product conforms to the rules of the following EU directives (including all applicable changes): 2011/65 / EU RoHS2 and 2001/95 / EC directive on general product safety.
The full text of the EU declaration of conformity is available at www.ground- zero-audio.com. Loudspeakers contain magnetized metals and some valuable raw materials and must not be disposed of with normal household waste. Please leave defective or no longer required components to a local recycling facility at the end of their practical use.

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 perfectly working products in any practical application. Continuous and advanced trainings for development employees ensure the highest possible qualification. KLIPPEL® is a registered trademark of KLIPPEL GmbH

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

Mounting

Crossover

Tweeter level adjustment
Black & green wire connected 0 dBB
lack & green wire not connected -2 dB

High pass filter (@ 250 Hz / 6 dB/oct)
Using the HPF very low frequencies can be limited in case there is no active HPF available
Red & white wire not connected HPF on
Red & white wire connected HPF off

Important note! In order to replace the original speakers, door panels and some other panels (e.g. on the A-pillar) need to be removed. This may require special lever tools in order not to damage the fastening clips on the panels. Therefore, it´s strongly recommended only having the components installed by a car audio workshop or similar specialists having the necessary tools available and sufficient experience in installing such components in order to avoid any damage to the trim parts, bodywork, paintwork or electrical equipment of the vehicle due to an incorrect or inaccurate installation.

Specifications

Model	GZCS 100.2BMW
Nominal Diameter	100 mm / 4“ midrange & 25 mm / 1“ tweeter
Compatibility	BMW*
Impedance	4 Ohm / ohms
Frequency response	70 Hz – 24 kHz
Cross Frequency	5000 Hz
Power Handling (RMS)	70 Watt / Watts
Power Handling (max)	110 Watt / Watts
Efficiency (SPL)	87 dB
Resonance Frequency	77 Hz (midwoofer)
Xmax (p2p)	7 mm / 0.28”

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!