Precision Devices PD.158
Subwoofer
15″ / 380 mm
Nominal diameter
55 Hz
Resonance
0.24
Q factor
100 dB
Sensitivity
± 6 mm
Linear excursion
1200 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
100.3
dB
Frequency response
40 - 3000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
54.6
Hz
Mechanical quality factor
QMS
14.91
Electrical quality factor
QES
0.25
Total quality factor
QTS
0.24
Large signal parameters
Maximum linear excursion
xmax
6.0
mm
Air volume displaced at xmax
VD
513
cm³
Power handling
P
600
W
Program power
Pmax
1200
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.8
Ω
Inductance (1kHz)
LE
0.76
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
25.39
N/A
Motor constant
Bl/√RE
10.6
N/√W
Air gap height
HAG
11
mm
Material
Ceramic
Diaphragm
Effective diameter
330
mm
Effective area
SD
855
cm²
Moving mass
MMS
85.2
g
Moving mass (without air load)
MMD
67
g
Material
Paper
Suspensions
Stiffness
KMS
9.32
N/mm
Compliance
CMS
107
µm/N
Equivalent volume to the compliance
VAS
64.8
L
Mechanical resistance
RMS
1.96
N·s/m
Surround material
Fabric
Dimensions
Nominal diameter
15
″
380
mm
Overall diameter
410
mm
Baffle cutout diameter
357
mm
Overall depth
156
mm
Flange thickness
10
mm
Mounting depth
146
mm
Volume occupied by the driver (estimated)
5.5
L
Net weight
13.0
kg
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fS
46 Hz
SD
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45 - 2500 Hz
QTS
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xmax
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SPL1W
98 dB
Bl/√RE
11
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fS
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SD
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40 - 2000 Hz
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SD
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60 - 5000 Hz
QTS
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xmax
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SPL1W
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Bl/√RE
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