18″ / 460 mm
Nominal diameter
33 Hz
Resonance
0.32
Q factor
94 dB
Sensitivity
± 12 mm
Linear excursion
3000 W
Program Power
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Available on (affiliate link)
Parts Express
$$$
Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
94.1
dB
Frequency response
35 - 1000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
33.0
Hz
Mechanical quality factor
QMS
6.23
Electrical quality factor
QES
0.34
Total quality factor
QTS
0.32
Large signal parameters
Maximum linear excursion
xmax
12.0
mm
Air volume displaced at xmax
VD
1452
cm³
Power handling
P
1500
W
Program power
Pmax
3000
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.2
Ω
Inductance (1kHz)
LE
1.64
mH
VC Diameter
100
mm
Winding height
HVC
31
mm
Winding material
Copper
Former material
Glass Fibre
Magnet
Flux density
B
1.15
T
Force factor
Bl
22.8
N/A
Motor constant
Bl/√RE
12.7
N/√W
Air gap height
HAG
15
mm
Material
Ferrite
Diaphragm
Effective diameter
393
mm
Effective area
SD
1210
cm²
Moving mass
MMS
268
g
Moving mass (without air load)
MMD
238.8
g
Material
Waterproof
Suspensions
Stiffness
KMS
11.49
N/mm
Compliance
CMS
87
µm/N
Equivalent volume to the compliance
VAS
182
L
Mechanical resistance
RMS
8.92
N·s/m
Spider material
Double Silicone
Dimensions
Nominal diameter
18
″
460
mm
Overall diameter
460
mm
Baffle cutout diameter
422
mm
Overall depth
241
mm
Flange thickness
16
mm
Mounting depth
225
mm
Volume occupied by the driver
11.0
L
Net weight
15.1
kg
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SpeakerbenchSimilar subwoofers to B&C Speaker 18TBW100 4Ω
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18″Subwoofer
fS
32 Hz
SD
1225 cm²
30 - 2000 Hz
QTS
0.35
xmax
12.0 mm
SPL1W
94 dB
Bl/√RE
13
Pmax
3600 W
.jpg.webp)
18″Subwoofer
fS
32 Hz
SD
1212 cm²
30 - 1500 Hz
QTS
0.33
xmax
13.0 mm
SPL1W
94 dB
Bl/√RE
13
Pmax
3200 W
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18″Subwoofer
fS
31 Hz
SD
1225 cm²
30 - 800 Hz
QTS
0.34
xmax
15.0 mm
SPL1W
93 dB
Bl/√RE
13
Pmax
3000 W