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GZHW 20SPL
GROUND ZERO GmbH – Erlenweg 25, 85658 Egmating, Germany
GroundZeroAudioCom
www.ground-zero-audio.com
info@ground-zero-audio.com
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TECHNICAL SPECIFICATIONS
Product name GZHW 20SPL
Product type Subwoofer driver
Outer diameter 211 mm / 8.31“
Mounting diameter 187 mm / 7.36“
Mounting depth 143.5 mm / 5.65“
Magnet dimension (3x) 160 x 15 mm
Total weight 7.6 kg
Voice coil diameter 63 mm / 2.5“ round wire
Voice coil winding height
Voice coil wire material Copper
Voice coil former material Aluminum
Top plate / height 9 mm / 0.35“
Linear excursion (one direction) 13 mm / 0.51“
Effective Xmax 40 mm / 1.57“
Top Plate and T-Yoke color Black machined
Basket material Aluminum cast
Basket color Yellow
Spider material (2x) progressive POLYCOT
Surround type High-roll sandwich foam
Cone material Reinforced paper
Dustcap material Convex IMPP with 3-D logo
Magnet cover PVC
35 mm / 1.38“
Gasket material Foam
Terminal type Black-chromed push terminal
Power handling 1500 WSPL (700 WRMS)*
Impedance 2x 1 ohms
R
e (Serial)
R
es
F
S
Q
ms
Q
es
Q
ts
Rms 7.845 kg/s
Cms 0.088 mm/N
Mms 196.7 gr
BL 15.32 N/A
SPL (1w/1m) 80.0 dB
V
AS
L
e
S
d
Recommended frequency range 40 – 100 Hz
Recommended amplifier power 500 – 1500 WRMS (
* max. power handling is only for recommended enclosure applicable
2.01 ohms
29.90 ohms
38.3 Hz
6.04
0.407
0.381
4.77 L / 0.168 cu.ft
1.923 mH
196,07 cm²
@ 2 / 0.5 ohms)
A
E
A 211 mm / 8.31“
C
B
C 143.5 mm / 5.65“
D 169 mm / 6.65“
E 10 mm / 0.39“
187 mm / 7.36“
D
B
GROUND ZERO GmbH – Erlenweg 25, 85658 Egmating, Germany
GroundZeroAudioCom
www.ground-zero-audio.com
info@ground-zero-audio.com
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POWER RECOMMENDATION
WIRING OPTIONS
GROUND ZERO GmbH – Erlenweg 25, 85658 Egmating, Germany
GroundZeroAudioCom
www.ground-zero-audio.com
info@ground-zero-audio.com
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ENCLOSURE RECOMMENDATION
Bassreflex /
(Grün / green)
Port (dimensions)
Portlänge / port length
F3(-3 dB)
Bandpass 4thorder
(Blau / blue)
Port (diameter)
Portlänge / port length
Fb(tuning frequency)
Bandbreite /
bandwidth (-3dB)
Geschlossen /
(rot / red)
Qtc / F3(-3 dB)
Geschlossen /
(violett / violett)
Qtc / F3(-3 dB)
vented
sealed
sealed
22 Liter netto / 0.78 cu.ft. net
Recommended enclosure
80 mm / 3.15”
270 mm / 10.63”
36 Hz
8 Liter netto geschlossen / 0.28 cu.ft. net sealed
14 Liter netto ventiliert / 0.49 cu.ft. net vented
limited frequency range
80 mm / 3.15”
250 mm / 10”
58 Hz
37 – 86 Hz
15 Liter netto / 0.53 cu.ft. net
0.53 / 68 Hz
4 Liter netto / 0.141 cu.ft. net
Minimum enclosure volume
0.65 / 64 Hz
GROUND ZERO GmbH – Erlenweg 25, 85658 Egmating, Germany
GroundZeroAudioCom
www.ground-zero-audio.com
info@ground-zero-audio.com
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