Precision Devices PD.156
Subwoofer
15″ / 380 mm
Nominal diameter
50 Hz
Resonance
0.47
Q factor
95 dB
Sensitivity
± 8.1 mm
Linear excursion
1300 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
95.1
dB
Frequency response
50 - 1500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
50.3
Hz
Mechanical quality factor
QMS
7.45
Electrical quality factor
QES
0.50
Total quality factor
QTS
0.47
Large signal parameters
Maximum linear excursion
xmax
8.1
mm
Air volume displaced at xmax
VD
735
cm³
Power handling
P
650
W
Program power
Pmax
1300
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.7
Ω
Inductance (1kHz)
LE
1.0
mH
VC Diameter
115
mm
Winding height
HVC
21
mm
Winding material
Copper
Former material
Glass Fibre
Magnet
Flux density
B
1.5
T
Force factor
Bl
20.98
N/A
Motor constant
Bl/√RE
8.8
N/√W
Air gap height
HAG
9
mm
Material
Ceramic
Diaphragm
Effective diameter
340
mm
Effective area
SD
908
cm²
Moving mass
MMS
124.6
g
Moving mass (without air load)
MMD
105.1
g
Material
Paper
Suspensions
Stiffness
KMS
12.37
N/mm
Compliance
CMS
81
µm/N
Equivalent volume to the compliance
VAS
93.4
L
Mechanical resistance
RMS
5.28
N·s/m
Surround material
Fabric
Dimensions
Nominal diameter
15
″
380
mm
Overall diameter
410
mm
Baffle cutout diameter
357
mm
Overall depth
153
mm
Flange thickness
10
mm
Mounting depth
143
mm
Volume occupied by the driver (estimated)
5.5
L
Net weight
13.25
kg
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Export this driver to a simulation software:
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fS
51 Hz
SD
855 cm²
50 - 2000 Hz
QTS
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xmax
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SPL1W
95 dB
Bl/√RE
8.5
Pmax
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fS
49 Hz
SD
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49 - 3000 Hz
QTS
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xmax
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SPL1W
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Bl/√RE
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fS
49 Hz
SD
880 cm²
50 - 4000 Hz
QTS
0.49
xmax
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SPL1W
95 dB
Bl/√RE
7.68
Pmax
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