18″ / 460 mm
Nominal diameter
30 Hz
Resonance
0.31
Q factor
94 dB
Sensitivity
± 9 mm
Linear excursion
2400 W
Program Power
.png)
.png)
Available on (affiliate links)
Parts Express
$$$
Amazon.com
$$$
Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
94.4
dB
Frequency response
35 - 1000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
30.0
Hz
Mechanical quality factor
QMS
7.00
Electrical quality factor
QES
0.33
Total quality factor
QTS
0.31
Large signal parameters
Maximum linear excursion
xmax
9.0
mm
Air volume displaced at xmax
VD
1089
cm³
Power handling
P
1200
W
Program power
Pmax
2400
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.7
Ω
Inductance (1kHz)
LE
1.73
mH
VC Diameter
100
mm
Winding height
HVC
25
mm
Winding material
Copper
Former material
Glass Fibre
Magnet
Flux density
B
1.1
T
Force factor
Bl
22.0
N/A
Motor constant
Bl/√RE
11.4
N/√W
Air gap height
HAG
12
mm
Material
Ferrite
Diaphragm
Effective diameter
393
mm
Effective area
SD
1210
cm²
Moving mass
MMS
230
g
Moving mass (without air load)
MMD
200.8
g
Material
Waterproof
Suspensions
Stiffness
KMS
8.13
N/mm
Compliance
CMS
123
µm/N
Equivalent volume to the compliance
VAS
256
L
Mechanical resistance
RMS
6.19
N·s/m
Spider material
Double Silicone
Dimensions
Nominal diameter
18
″
460
mm
Overall diameter
460
mm
Baffle cutout diameter
422
mm
Overall depth
209
mm
Flange thickness
16
mm
Mounting depth
193
mm
Volume occupied by the driver
10.5
L
Net weight
13.0
kg
.png)
.png)
.png)
Export this driver to a simulation software:
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
SpeakerbenchSimilar subwoofers to B&C Speaker 18TBX100 4Ω
.jpg.webp)
18″Subwoofer
fS
30 Hz
SD
1225 cm²
30 - 1000 Hz
QTS
0.33
xmax
13.0 mm
SPL1W
94 dB
Bl/√RE
12
Pmax
3000 W
.jpg.webp)
21″Subwoofer
fS
32 Hz
SD
1662 cm²
25 - 1500 Hz
QTS
0.31
xmax
14.0 mm
SPL1W
95 dB
Bl/√RE
15
Pmax
3600 W
.jpg.webp)
18″Subwoofer
fS
31 Hz
SD
1164 cm²
30 - 200 Hz
QTS
0.32
xmax
11.5 mm
SPL1W
94 dB
Bl/√RE
11
Pmax
2000 W