GROUND ZERO GZTK 165 Titanium Series Kick or Midwoofer Owner’s Manual

: June 9, 2024
: Ground-Zero

Table of Contents

GROUND ZERO GZTK 165 Titanium Series Kick or Midwoofer Owner
Features
General installation note
Terms of warranty
Specifications
Respect the Music
References
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Download This Manual (PDF format)

GROUND ZERO GZTK 165 Titanium Series Kick or Midwoofer Owner

GROUND-ZERO-GZTK-165-Titanium-Series-Kick-or-Midwoofer-Owner-PRODACT-
IMG

Features

High-quality kick/midwoofer
Klippel® optimized
HQPP 3D structure cone
Phase plug
Durable rubber surround
Resonance free steel basket
Hexagon style protection grill

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 components

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 GZTK 165

voice coil (diameter & material) : 25 mm / 1” copper
motor (magnet) : ferrite
cone (material / diameter) : 3D-HQPP / 122 mm / 4.8“
efficiency (SPL) : 87 dB
impedance (nominal) / Re : 3 / 3.07 Ohm/ohms
Qms – Qes – Qts – Rms : 3.53 – 1.27 – 0.94 – 2.10 kg/s
Mms – Cms – BL – Le – Vas : 13.9 g – 0.27 mm/N – 4.1 N/A – 0.19 mH – 7.27 L
resonance frequency (Fs) : 81.6Hz
(peak to peak – linear) : 16 mm / 0.63” – 8 mm / 0.32”
recommended frequency response : 50 Hz – 4000 Hz
power handling (nominal/max) : 80 / 100 Watt / Watts
Einbaudurchmesser / mounting diameter Einbautiefe / mounting depth : 165 mm / 6.5” 142.5 mm / 5.61” 68 mm / 2.68”

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!

Noise damping

Simple or thin surfaces and panels of the car´s body and in the vehicle´s interior tend by stimulation to vibrations, in particular by vibrations that arise while driving or when playing music with the speaker cones. In order to reduce the resulting booming, the natural resonance, means the frequency at which these surfaces resonate particularly strongly, must be reduced. For this purpose, the insulation of aluminum-butyl requires the largest possible mass. For this purpose, GROUND ZERO offers materials with different properties and basis weight. In addition, the GROUND ZERO range offers other products, such as self-adhesive aluminum plates or sound-absorbing foam mats, which improve the result even more. The bonding of these materials drastically changes the tendency of body parts to oscillate, which significantly reduces the unwanted noise level.