Goldwood GW-1244
Woofer
12″ / 305 mm
Nominal diameter
30 Hz
Resonance
0.68
Q factor
87 dB
Sensitivity
± 3 mm
Linear excursion
290 W
Program Power
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Parts Express
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
87.2
dB
Frequency response
18 - 4500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
29.7
Hz
Mechanical quality factor
QMS
3.30
Electrical quality factor
QES
0.86
Total quality factor
QTS
0.68
Large signal parameters
Maximum linear excursion
xmax
3.0
mm
Air volume displaced at xmax
VD
158
cm³
Power handling
P
150
W
Program power
Pmax
290
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.6
Ω
Inductance (1kHz)
LE
0.6
mH
VC Diameter
51
mm
Winding material
Aluminum
Magnet
Force factor
Bl
8.48
N/A
Motor constant
Bl/√RE
4.47
N/√W
Weight
1.134
kg
Diaphragm
Effective diameter
259
mm
Effective area
SD
526
cm²
Moving mass
MMS
93.2
g
Moving mass (without air load)
MMD
84.8
g
Material
Poly-Mica
Suspensions
Stiffness
KMS
3.25
N/mm
Compliance
CMS
308
µm/N
Equivalent volume to the compliance
VAS
120
L
Mechanical resistance
RMS
5.27
N·s/m
Surround material
Butyl Rubber
Dimensions
Nominal diameter
12
″
305
mm
Overall diameter
305
mm
Baffle cutout diameter
286
mm
Mounting depth
123
mm
Volume occupied by the driver (estimated)
0.91
L
Net weight
2.189
kg
Frame material
Stamped Steel
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SD
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20 - 1000 Hz
QTS
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xmax
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SPL1W
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Bl/√RE
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Pmax
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SD
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SD
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20 - 500 Hz
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