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Model
GZUC 65.3SQX
Impedance
4 Ohm
Frequency response
40Hz – 25kHz
Cut-off frequency
Recommended active cut off: 300 Hz (12dB)
Passive crossover: 3000 Hz (12 dB)
Recommenced power
Kickwoofer: 120 - 200 Watt
Mid/High: 100 - 150 Watt
Crossover
2- Way
Crossover parts
Air coils / MOX resistors / MET capacitors / PTC / Gold plated jumpers
Crossover function
Adjustable Tweeterlevel, Highpass and Lowpass / Phaseswitch
Kickwoofer
Midrange
Tweeter
Cone (Dome)
WFWC (1Layer glass fibre / 1layer
wood fibre)
Aluminum
High shape coated silk dome
Cone color
Brown
Black
Black
Surround
LDW rubber
Rubber
Coated silk
Dustcap
Coated cloth fibre with silver logo
print
Aluminum
-
Basket / Frame
material
Euro-Din Aluminum cast
Fiber composite basket
Machined aluminum
Basket / Frame color
Dark grey powder coated
Black
Front: Black anodized / Back:
Copper anodized
Terminal
Chrome push terminal
Solder terminal
Cable
Magnet
1 x Ferrit 90 x 15 mm (3.54“ x
0.59“)
1x Neodymium
1 x Neodymium with coupled
chamber
Voice coil
31 mm / 1.22“ copper round wire
25 mm / 1“ copper round wire
25 mm / 1“ copper round wire
Voice coil former
Aluminum
Aluminum
Aluminum
RE
3.44 Ohm
3.9 Ohm
3.2 Ohm
SPL
89 dB
84 dB
91 dB
FS
55.1 Hz
150 Hz
750 Hz
QMS
7.514
5.12
QES
0.522
0.74
QTS
0.488
0.64
VAS
12.6 L / 0.445 cu.ft
0.5 L / 0.018 cu.ft
MMS
18.1 Gr
1.9 Gr
BL
6.4 N/A
3.0 N/A
RMS
0.834 kg/s
0.3 kg/s
CMS
0.46 mm/N
0.68 mm/N
LE
0.458 mH
0.12 mH
Linear Excursion
+ / - 5 mm / 0.197“
+/- 1.5 mm / 0.059”
X Max
10 mm / 0.39“
4 mm / 0.157”
Frequency response
40 Hz – 4 kHz
300 – 20 kHz
2 – 25 kHz
Powerhandling
120 / 200 W
50 / 80 W
70 / 120 W
Outer diameter
165 mm / 6.5”
72 mm / 2.83”
49 mm / 1.93”
Mounting diameter
142 mm / 5.59”
61 mm / 2.4”
43.10 mm / 1.7”
Mounting depth
70 mm / 2.76”
36 mm / 1.42”
22 mm / 0.87”
GROUND ZERO GmbH – Erlenweg 25 – 85658 Egmating – Germany
GroundZeroAudioCom
www.ground-zero-audio.com
info@ground-zero-audio.com
Page 2
GZUC 65.3SQX
Addendum
GROUND ZERO GmbH – Erlenweg 25 – 85658 Egmating – Germany
GroundZeroAudioCom
www.ground-zero-audio.com
info@ground-zero-audio.com
Page 3
A
165 mm / 6.5”
B
142 mm / 5.59”
C
70 mm / 2.76”
D
104 mm / 4.09“ (90 mm / 3.54“)
E
4.3 mm / 0.169“
WFWC® “Wooden Fiber Woven Compound”
O
49 mm / 1.93“
P
34 mm / 1.34“
Q
22 mm / 0.866“
R
33 mm / 1.299“
S
43.10 mm / 1.7“
I
90 mm / 3.54“
J
72.7 mm / 2.86“
K
61.7 mm / 2.43“
L
36 mm / 1.42“
M
37 mm / 1.46“
N
7.2 mm / 0.28“
F
142 mm / 5.59“
G
86 mm / 3.39“
H
43 mm / 1.69“
This state of the art cone material and its production technology combine extraordinary low distortion
of thin woven glass fiber and the outstanding strength of rough wooden fabric.
Due to its light weight this cone offers perfect and precise sound quality.
LDW® “Low Distortion Wave”
Because of its complex shaped wave-form, the exclusively designed LDW® Surround ensures an
extremely linear performance and the reduction of partial oscillation.
A
E
C
D
B
F
I
GZ
M
K
J
O
R
S
Q
N
L
P
G
H
GROUND ZERO GmbH – Erlenweg 25 – 85658 Egmating – Germany
GroundZeroAudioCom
www.ground-zero-audio.com
info@ground-zero-audio.com
Page 4
Wiring diagram
Tweeter Tweeter Midrange Midrange
GZ
GZ
A B C D
GROUND ZERO
Kickwoofer Kickwoofer
4 Channel amplifier
Recommended cut-off frequencies:
A+B: HPF 300 Hz/12dB
C+D: LPF 300 Hz/12dB
GROUND ZERO GmbH – Erlenweg 25 – 85658 Egmating – Germany
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