GROUND ZERO GZCT 28M-SPL Competition Series Tweeter Owner’s Manual
- June 13, 2024
- Ground-Zero
Table of Contents
GERMAN ENGINEERING
COMPETITION SERIES
Tweeter
GZCT 28M-SPL
Anleitung / Owner´s manual
(AWV2.1)
Specifications
- High-quality dome tweeter
- Installation-friendly dimensions
- 28 mm / 1.1” Mylar dome
- Flush and surface mount housing included (GZTH 25-28B)
- 12 dB/oct in-line high-pass filter
COMPETITION SERIES
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.
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
| Model | GZCT 28M-SPL |
|---|---|
| Impedance | 4 Ohm / ohms |
| Cone diameter | 28 mm / 1.1” |
| Motor | Neodym / neodymium |
| Resonant frequency | 1250 Hz |
| Frequency response | 2.5 – 20 kHz |
| Efficiency (SPL) | 86 dB |
| Power handling (RMS) | 80 Watt / Watts (mit / with HPF) |
| Power handling (max.) | 110 Watt / Watts (mit / with HPF) |
| Protection | PTC |
| High pass filter | 12 dB / Okt. / oct @ 5500 Hz |
| Outer diameter | 54 mm / 2.13” |
| Mounting diameter | 48 mm / 1.89” |
| Mounting depth | 16 mm / 0.63” |
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
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!
GROUND ZERO Produkte werden in Deutschland entwickelt
GROUND ZERO products are engineered in Germany
GROUND ZERO – international sponsor of
Ground Zero GmbH
Erlenweg 25 – 85658 Egmating – Germany
Tel. +49 (0)8095 / 873 83 -0
Fax -10
http://www.ground-zero-audio.com
www.ground-zero-audio.com
http://www.ground-zero-audio.com
Documents / Resources
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GROUND ZERO GZCT 28M-SPL Competition Series
Tweeter
[pdf] Owner's Manual
GZCT 28M-SPL Competition Series Tweeter, GZCT 28M-SPL, Competition Series
Tweeter, Series Tweeter, Tweeter
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