Goldwood GW-S525/4

4Ω
8Ω

Woofer

5.25″ / 145 mm
Nominal diameter
73 Hz
Resonance
0.88
Q factor
84 dB
Sensitivity
± 2 mm
Linear excursion
130 W
Program Power
Goldwood GW-S525/4 WooferGoldwood GW-S525/4 WooferGoldwood GW-S525/4 Woofer
Impedance
Excursion
Velocity
SPL
Phase
Group delay
Step response
Tone Burst
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
84.2
dB
Frequency response
40 - 6000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
72.9
Hz
Mechanical quality factor
QMS
3.79
Electrical quality factor
QES
1.15
Total quality factor
QTS
0.88

Large signal parameters

Maximum linear excursion
xmax
2.0
mm
Air volume displaced at xmax
VD
17
cm³
Power handling
P
70
W
Program power
Pmax
130
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.6
Ω
Inductance (1kHz)
LE
0.3
mH
VC Diameter
25
mm
Winding material
Aluminum

Magnet

Force factor
Bl
3.9
N/A
Motor constant
Bl/√RE
2.05
N/√W
Weight
0.425
kg

Diaphragm

Effective diameter
102
mm
Effective area
SD
82
cm²
Moving mass
MMS
10.5
g
Moving mass (without air load)
MMD
9.9
g
Material
Poly

Suspensions

Stiffness
KMS
2.22
N/mm
Compliance
CMS
451
µm/N
Equivalent volume to the compliance
VAS
4.3
L
Mechanical resistance
RMS
1.27
N·s/m
Surround material
Rubber

Dimensions

Nominal diameter
5.25
″
145
mm
Overall diameter
145
mm
Baffle cutout diameter
113
mm
Mounting depth
57
mm
Volume occupied by the driver (estimated)
0.4
L
Net weight
1.021
kg
Frame material
Stamped Steel
SPL & Impedance
Goldwood GW-S525/4 SPL & Impedance
DatasheetDatasheet

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