Precision Devices PD.1550
Subwoofer
15″ / 380 mm
Nominal diameter
46 Hz
Resonance
0.29
Q factor
98 dB
Sensitivity
± 8.2 mm
Linear excursion
1200 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
98.0
dB
Frequency response
40 - 1500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
46.2
Hz
Mechanical quality factor
QMS
13.87
Electrical quality factor
QES
0.30
Total quality factor
QTS
0.29
Large signal parameters
Maximum linear excursion
xmax
8.2
mm
Air volume displaced at xmax
VD
745
cm³
Power handling
P
600
W
Program power
Pmax
1200
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.6
Ω
Inductance (1kHz)
LE
0.78
mH
VC Diameter
101
mm
Winding height
HVC
22
mm
Winding material
Copper
Former material
Glass Fibre
Magnet
Flux density
B
1.5
T
Force factor
Bl
26.61
N/A
Motor constant
Bl/√RE
10.4
N/√W
Air gap height
HAG
10
mm
Material
Ceramic
Diaphragm
Effective diameter
340
mm
Effective area
SD
908
cm²
Moving mass
MMS
114.4
g
Moving mass (without air load)
MMD
94.9
g
Material
Paper
Suspensions
Stiffness
KMS
9.15
N/mm
Compliance
CMS
109
µm/N
Equivalent volume to the compliance
VAS
126
L
Mechanical resistance
RMS
2.39
N·s/m
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
12.8
kg
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fS
45 Hz
SD
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45 - 3500 Hz
QTS
0.29
xmax
7.8 mm
SPL1W
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Bl/√RE
9.45
Pmax
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fS
45 Hz
SD
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fS
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SD
707 cm²
45 - 18000 Hz
QTS
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xmax
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SPL1W
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