Precision Devices PD.188
Subwoofer
18″ / 460 mm
Nominal diameter
36 Hz
Resonance
0.26
Q factor
97 dB
Sensitivity
± 6 mm
Linear excursion
1200 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
96.8
dB
Frequency response
40 - 3500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
36.2
Hz
Mechanical quality factor
QMS
13.04
Electrical quality factor
QES
0.27
Total quality factor
QTS
0.26
Large signal parameters
Maximum linear excursion
xmax
6.0
mm
Air volume displaced at xmax
VD
681
cm³
Power handling
P
600
W
Program power
Pmax
1200
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.9
Ω
Inductance (1kHz)
LE
1.55
mH
VC Diameter
101
mm
Winding height
HVC
19
mm
Winding material
Copper
Former material
Glass Fibre
Magnet
Flux density
B
1.1
T
Force factor
Bl
29.28
N/A
Motor constant
Bl/√RE
12.1
N/√W
Air gap height
HAG
11
mm
Material
Ceramic
Diaphragm
Effective diameter
380
mm
Effective area
SD
1134
cm²
Moving mass
MMS
173
g
Moving mass (without air load)
MMD
145
g
Material
Paper
Suspensions
Stiffness
KMS
8.97
N/mm
Compliance
CMS
112
µm/N
Equivalent volume to the compliance
VAS
202
L
Mechanical resistance
RMS
3.02
N·s/m
Surround material
Fabric
Dimensions
Nominal diameter
18
″
460
mm
Overall diameter
474
mm
Baffle cutout diameter
415
mm
Overall depth
187
mm
Flange thickness
13
mm
Mounting depth
174
mm
Volume occupied by the driver (estimated)
7.1
L
Net weight
14.0
kg
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Export this driver to a simulation software:
WinISD
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Hornresp
QSpeakers
SpeakerSim
MfbLabs
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fS
35 Hz
SD
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40 - 2500 Hz
QTS
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xmax
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SPL1W
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Bl/√RE
8.86
Pmax
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fS
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SD
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fS
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SD
880 cm²
40 - 18000 Hz
QTS
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xmax
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SPL1W
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Bl/√RE
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