B&C Speaker 18DS115

Subwoofer

18″ / 460 mm
Nominal diameter
30 Hz
Resonance
0.17
Q factor
95 dB
Sensitivity
± 16.5 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
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Specifications

Sensitivity (1W, 1m, infinite baffle)
SPL1W
95.0
dB
Frequency response
30 - 500
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
30.0
Hz
Mechanical quality factor
QMS
4.75
Electrical quality factor
QES
0.18
Total quality factor
QTS
0.17

Large signal parameters

Maximum linear excursion
xmax
16.5
mm
Air volume displaced at xmax
VD
1997
cm³
Power handling
P
1700
W
Program power
Pmax
3400
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.3
Ω
Inductance (1kHz)
LE
2.8
mH
VC Diameter
116
mm
Winding height
HVC
40
mm
Winding material
Aluminium
Former material
Glass Fibre

Magnet

Flux density
B
0.8
T
Force factor
Bl
34.0
N/A
Motor constant
Bl/√RE
18.7
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
348
g
Moving mass (without air load)
MMD
318.8
g
Material
Waterproof Both Sides

Suspensions

Stiffness
KMS
11.91
N/mm
Compliance
CMS
84
µm/N
Equivalent volume to the compliance
VAS
177
L
Mechanical resistance
RMS
13.81
N·s/m
Spider material
Silicone

Dimensions

Nominal diameter
18
460
mm
Overall diameter
460
mm
Baffle cutout diameter
422
mm
Overall depth
248
mm
Flange thickness
16
mm
Mounting depth
232
mm
Volume occupied by the driver
10.0
L
Net weight
12.55
kg
B&C Speaker 18DS115 Impedance
B&C Speaker 18DS115 SPL
B&C Speaker 18DS115 Dimensions

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