Precision Devices PD.2450

Subwoofer

24″ / 610 mm
Nominal diameter
32 Hz
Resonance
0.33
Q factor
97 dB
Sensitivity
± 10.5 mm
Linear excursion
2000 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
97.3
dB
Frequency response
30 - 1000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
32.4
Hz
Mechanical quality factor
QMS
13.03
Electrical quality factor
QES
0.34
Total quality factor
QTS
0.33

Large signal parameters

Maximum linear excursion
xmax
10.5
mm
Air volume displaced at xmax
VD
2360
cm³
Power handling
P
1000
W
Program power
Pmax
2000
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.2
Ω
Inductance (1kHz)
LE
1.75
mH
VC Diameter
152
mm
Winding height
HVC
30
mm
Winding material
Copper
Former material
Glass Fibre

Magnet

Flux density
B
1.1
T
Force factor
Bl
36.48
N/A
Motor constant
Bl/√RE
16.0
N/√W
Air gap height
HAG
15
mm
Material
Ceramic

Diaphragm

Effective diameter
535
mm
Effective area
SD
2248
cm²
Moving mass
MMS
424.1
g
Moving mass (without air load)
MMD
349.5
g
Material
Paper

Suspensions

Stiffness
KMS
17.54
N/mm
Compliance
CMS
57
µm/N
Equivalent volume to the compliance
VAS
405
L
Mechanical resistance
RMS
6.62
N·s/m
Surround material
Fabric

Dimensions

Nominal diameter
24
610
mm
Overall diameter
632
mm
Baffle cutout diameter
573
mm
Overall depth
245
mm
Flange thickness
17
mm
Mounting depth
228
mm
Volume occupied by the driver (estimated)
19.0
L
Net weight
36.0
kg
Precision Devices PD.2450 SPL & Impedance

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