Page 1
GROUND ZERO GZUC 165.2SQ / SQ-ACT
URANIUM SERIES
Loudspeaker System
#
GZUC 165.2SQ
GZUC 165.2SQ-ACT
Owner´s Manual
English
Page 2
GROUND ZERO GZUC 165.2SQ / SQ-ACT
Introduction
Thank you for choosing a GROUND ZERO product and welcome to your new
URANIUM series loudspeaker!
This is the owner´s manual providing instructions on the operation and installation of this SQ tweeter.
Please, read it carefully. If you have any further questions, please contact your local
GROUND ZERO dealer or our regional distribution partner.
This tweeter is one of the most important parts of your car audio system. However, it will only be able to
deliver its full performance when each part of the whole system is tuned carefully matching each other.
Therefore, we recommend consulting a car audio specialist to compile the desired sound system,
as well as for installation and tuning.
We hope you will enjoy the sound quality of an enthusiastic development
by the GROUND ZERO engineering team!
URANIUM Series – Amazing Sound Quality
Products belonging to the GROUND ZERO URANIUM series stand for high-end sound quality
or extreme power handling capability.
Each product of the URANIUM line-up has been developed carefully to fulfill the demands of music
enthusiasts with high audiophile expectations at a reasonable price level. Applying all of Ground Zero´s
sound quality competition experience while tuning the product details carefully, results in emotional and
amazing audio reproduction. The distinguished amplifiers point out the main purpose by their designation:
SQ beyond the average!
GZUC 165.2SQ/SQ-ACT is a loudspeaker system of the new URANIUM series,
delivering an outstanding sound performance.
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 regional distributor.
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 due 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
Page 3
GROUND ZERO GZUC 165.2SQ / SQ-ACT
URANIUM SERIES
Loudspeaker System
GZUC 165.2SQ
GZUC 165.2SQ-ACT
Features
• High-Quality 2-way SQ loudspeaker system
• Klippel® optimized mid/kickwoofer
• Black anodized aluminum cone
• GZ-design aluminum cast basket
• High-efficient, linearized neodymium motor
• Durable rubber surround
• Gold plated terminals
• 28 mm / 1.1” SQ silk dome tweeter with flush mount housing
• Variable 12 dB/oct crossover with level adjustment
(not for ACT model)
• GZ-Design hexagon style protection grill
Page 4
Model
GZUC 165.2SQ
Speaker type
Impedance (nominal)
Frequency response
High pass filter
Low pass filter
Power handling
(RMS)
Power handling
(max.)
Model
GZUC 165.2SQ-ACT
Specification
GZUT 28SQ
Model
GZUK 165SQ
Diameter (nominal)
Diameter (nominal)
Housing
Basket
Dome
Cone
Voice Coil
Voice coil
Motor
Motor
Impedance
Impedance (nominal)
Frequency response
Frequency response
Power handling
80 Watts RMS
(3 kHz HPF @ 12dB/oct)
Power handling
120 Watts RMS
(60 Hz HPF @ 12dB/oct)
Resonance frequency
Resonance frequency
Efficiency (SPL)
Efficiency (SPL)
Re
Q
ms
Q
es
Q
ts
V
as
M
ms
B
L
R
ms
C
ms
L
E
Xmax (excursion)
Dimensions
Tweeter
Outer diameter
Mounting depth
54 mm / 2.13”
18 mm / 0.71”
Dimensions
Crossover
GROUND ZERO GZUC 165.2SQ / SQ-ACT
Specifications
165 mm / 6.5” 2-way loudspeaker system with crossover
4 ohms
40 Hz – 25 kHz
Low: 4800 Hz / High: 5500 Hz @ 12 dB/oct.
4800 Hz @ 12 dB/oct.
140 Watts
230 Watts
165 mm / 6.5” 2-way loudspeaker system for active application
28 mm
Plastic
Coated silk
165 mm / 6.5“
Aluminum cast
Anodized aluminum
28 mm / 1.1“ copper
Neodymium magnet
4 ohms
2500 Hz – 25 kHz
130 Watts max.
1300 Hz
90 dB
50 mm /2“ copper
Neodymium magnet
4 ohms
40 Hz – 3.5 kHz
180 Watts max.
54.6 Hz
87 dB
3.2 ohms
3.87
0.77
0.64
12.6 L
16.3 g
4.84 N/A
1.44 kg/s
0.52 mm/N
Mounting diameter
(W x H x D) 85 x 34 x 140mm / 3.35 x 1.34 x 5.51“
0.17 mH
12 mm / 0.47“ (p2p)
48 mm / 1.89”
Page 5
Dimensions
Mid / Kickwoofer
Outer diameter (A)
Mounting depth (C)
165 mm / 6.5“
63 mm / 2.48“
Tweeter cut-off frequency:
IN Input from head unit / amplifier
Tweeter level adjustment:
required level position
GROUND ZERO GZUC 165.2SQ / SQ-ACT
GZUK 165SQ Dimensions
Mounting diameter (B)
144 mm / 5.67“
Crossover Setup (not for ACT model)
The tweeter level can be set by positioning the jumper to the
The high pass crossover frequency can be selected with the jumper
between low or high
TW OUT Tweeter connector
WF OUT Mid/kickwoofer connector
Page 6
GZUX 165.2SQ
(not for ACT model)
4-Kanal Verstärker mit integrierter Aktivweiche
GZUC 165.2SQ Wiring
GROUND ZERO GZUC 165.2SQ / SQ-ACT
GZUC 165.2SQ-ACT Wiring
4-channel amplifier with integrated active crossover
Page 7
Noise damping – Essential basis for high-quality sound experiance
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. A complete door
damping set is available with GZDM DOORKIT PRO.
Essential door damping is available as GZDM DOORKIT PRO
GROUND ZERO GZUC 165.2SQ / SQ-ACT
Page 8
GROUND ZERO GZUC 165.2SQ / SQ-ACT
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 GmbH
Erlenweg 25, 85658 Egmating, Germany
Tel. +49 (0)8095/873-830
www.ground-zero-audio.com
Ground-Zero-Audio.com GroundZeroAudioCom GroundZeroAudioCom
Loading...