Goldwood GW-4028/S

Woofer

4″ / 111 mm
Nominal diameter
83 Hz
Resonance
0.7
Q factor
83 dB
Sensitivity
± 1.8 mm
Linear excursion
70 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
82.9
dB
Frequency response
70 - 10000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
83.1
Hz
Mechanical quality factor
QMS
2.40
Electrical quality factor
QES
1.00
Total quality factor
QTS
0.70

Large signal parameters

Maximum linear excursion
xmax
1.8
mm
Air volume displaced at xmax
VD
8.9
cm³
Power handling
P
40
W
Program power
Pmax
70
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
7.1
Ω
Inductance (1kHz)
LE
0.4
mH
VC Diameter
25
mm
Winding material
Aluminum

Magnet

Force factor
Bl
4.8
N/A
Motor constant
Bl/√RE
1.8
N/√W
Weight
0.454
kg

Diaphragm

Effective diameter
79
mm
Effective area
SD
50
cm²
Moving mass
MMS
6
g
Moving mass (without air load)
MMD
5.7
g
Material
Poly-Mica

Suspensions

Stiffness
KMS
1.65
N/mm
Compliance
CMS
606
µm/N
Equivalent volume to the compliance
VAS
2.1
L
Mechanical resistance
RMS
1.31
N·s/m
Surround material
Rubber

Dimensions

Nominal diameter
4
111
mm
Overall diameter
111
mm
Baffle cutout diameter
102
mm
Mounting depth
70
mm
Volume occupied by the driver (estimated)
0.5
L
Net weight
1.247
kg
Frame material
Stamped Steel
Goldwood GW-4028/S SPL

Export this driver to a simulation software:

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SD
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