Goldwood GW-215/40/8

Woofer

15″ / 381 mm
Nominal diameter
31 Hz
Resonance
1.09
Q factor
93 dB
Sensitivity
± 3.5 mm
Linear excursion
300 W
Program Power
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Discard
Apply

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Specifications

Sensitivity (1W, 1m, infinite baffle)
SPL1W
92.7
dB
Frequency response
20 - 2500
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
30.5
Hz
Mechanical quality factor
QMS
5.15
Electrical quality factor
QES
1.38
Total quality factor
QTS
1.09

Large signal parameters

Maximum linear excursion
xmax
3.5
mm
Air volume displaced at xmax
VD
288
cm³
Power handling
P
150
W
Program power
Pmax
300
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
7.2
Ω
Inductance (1kHz)
LE
0.84
mH
VC Diameter
38
mm
Winding material
Aluminum

Magnet

Force factor
Bl
9.93
N/A
Motor constant
Bl/√RE
3.71
N/√W
Weight
1.134
kg

Diaphragm

Effective diameter
324
mm
Effective area
SD
823
cm²
Moving mass
MMS
68
g
Moving mass (without air load)
MMD
51.5
g
Material
Poly

Suspensions

Stiffness
KMS
3.65
N/mm
Compliance
CMS
274
µm/N
Equivalent volume to the compliance
VAS
261
L
Mechanical resistance
RMS
2.53
N·s/m
Surround material
Rolled Foam

Dimensions

Nominal diameter
15
381
mm
Overall diameter
381
mm
Baffle cutout diameter
356
mm
Mounting depth
137
mm
Volume occupied by the driver (estimated)
1.0
L
Net weight
2.438
kg
Frame material
Stamped Steel
Goldwood GW-215/40/8 SPL & Impedance

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fS
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SD
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