Precision Devices PD.154

Subwoofer

15″ / 380 mm
Nominal diameter
45 Hz
Resonance
0.27
Q factor
98 dB
Sensitivity
± 7.7 mm
Linear excursion
1000 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
Discard
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
97.6
dB
Frequency response
40 - 2000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
44.9
Hz
Mechanical quality factor
QMS
20.44
Electrical quality factor
QES
0.27
Total quality factor
QTS
0.27

Large signal parameters

Maximum linear excursion
xmax
7.7
mm
Air volume displaced at xmax
VD
699
cm³
Power handling
P
500
W
Program power
Pmax
1000
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
6.5
Ω
Inductance (1kHz)
LE
1.03
mH
VC Diameter
101
mm
Winding height
HVC
22
mm
Winding material
Copper
Former material
Glass Fibre

Magnet

Flux density
B
1.1
T
Force factor
Bl
29.44
N/A
Motor constant
Bl/√RE
11.5
N/√W
Air gap height
HAG
11
mm
Material
Ceramic

Diaphragm

Effective diameter
340
mm
Effective area
SD
908
cm²
Moving mass
MMS
126.6
g
Moving mass (without air load)
MMD
107.1
g
Material
Paper

Suspensions

Stiffness
KMS
10.1
N/mm
Compliance
CMS
99
µm/N
Equivalent volume to the compliance
VAS
115
L
Mechanical resistance
RMS
1.75
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
13.0
kg
Precision Devices PD.154 SPL & Impedance

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