B&C Speaker 18SW115

Subwoofer

18″ / 460 mm
Nominal diameter
32 Hz
Resonance
0.3
Q factor
94 dB
Sensitivity
± 14 mm
Linear excursion
3400 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
94.1
dB
Frequency response
35 - 1500
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
32.0
Hz
Mechanical quality factor
QMS
5.60
Electrical quality factor
QES
0.32
Total quality factor
QTS
0.30

Large signal parameters

Maximum linear excursion
xmax
14.0
mm
Air volume displaced at xmax
VD
1694
cm³
Power handling
P
1700
W
Program power
Pmax
3400
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.3
Ω
Inductance (1kHz)
LE
1.9
mH
VC Diameter
116
mm
Winding height
HVC
34
mm
Winding material
Copper
Former material
Glass Fibre

Magnet

Flux density
B
1.16
T
Force factor
Bl
30.3
N/A
Motor constant
Bl/√RE
13.2
N/√W
Air gap height
HAG
14
mm
Material
Neodymium Inside Slug

Diaphragm

Effective diameter
393
mm
Effective area
SD
1210
cm²
Moving mass
MMS
275
g
Moving mass (without air load)
MMD
245.8
g
Material
Waterproof Both Sides

Suspensions

Stiffness
KMS
11.11
N/mm
Compliance
CMS
90
µm/N
Equivalent volume to the compliance
VAS
187
L
Mechanical resistance
RMS
9.87
N·s/m
Spider material
Silicone

Dimensions

Nominal diameter
18
460
mm
Overall diameter
460
mm
Baffle cutout diameter
422
mm
Overall depth
242
mm
Flange thickness
16
mm
Mounting depth
226
mm
Volume occupied by the driver
10.5
L
Net weight
11.9
kg
B&C Speaker 18SW115 Impedance
B&C Speaker 18SW115 SPL
B&C Speaker 18SW115 Dimensions

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fS
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SD
1200 cm²
30 - 1000 Hz
QTS
0.28
xmax
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SPL1W
95 dB
Bl/√RE
13
Pmax
3600 W