Goldwood GW-1858

Subwoofer

18″ / 457 mm
Nominal diameter
30 Hz
Resonance
1.1
Q factor
93 dB
Sensitivity
± 2 mm
Linear excursion
340 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
Sensitivity (1W, 1m, infinite baffle)
SPL1W
93.3
dB
Frequency response
20 - 6000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
30.3
Hz
Mechanical quality factor
QMS
6.70
Electrical quality factor
QES
1.30
Total quality factor
QTS
1.10

Large signal parameters

Maximum linear excursion
xmax
2.0
mm
Air volume displaced at xmax
VD
255
cm³
Power handling
P
220
W
Program power
Pmax
340
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.3
Ω
Inductance (1kHz)
LE
0.6
mH
VC Diameter
64
mm
Winding material
Aluminum

Magnet

Force factor
Bl
9.8
N/A
Motor constant
Bl/√RE
4.26
N/√W
Weight
1.417
kg

Diaphragm

Effective diameter
403
mm
Effective area
SD
1277
cm²
Moving mass
MMS
120.9
g
Moving mass (without air load)
MMD
90.2
g
Material
Polymer

Suspensions

Stiffness
KMS
4.37
N/mm
Compliance
CMS
229
µm/N
Equivalent volume to the compliance
VAS
524
L
Mechanical resistance
RMS
3.43
N·s/m

Dimensions

Nominal diameter
18
457
mm
Overall diameter
457
mm
Baffle cutout diameter
419
mm
Mounting depth
200
mm
Volume occupied by the driver (estimated)
1.5
L
Net weight
3.572
kg
Frame material
Stamped Steel
Goldwood GW-1858 SPL & Impedance

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Similar subwoofers to Goldwood GW-1858

Goldwood GW-215/40/8 Woofer
15Woofer
fS
31 Hz
SD
823 cm²
20 - 2500 Hz
QTS
1.09
xmax
3.5 mm
SPL1W
93 dB
Bl/√RE
3.71
Pmax
300 W