Precision Devices PDN.2450

Subwoofer

24″ / 610 mm
Nominal diameter
31 Hz
Resonance
0.35
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
97.0
dB
Frequency response
30 - 1000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
31.5
Hz
Mechanical quality factor
QMS
14.11
Electrical quality factor
QES
0.36
Total quality factor
QTS
0.35

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
5.6
Ω
Inductance (1kHz)
LE
1.76
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
35.75
N/A
Motor constant
Bl/√RE
15.2
N/√W
Air gap height
HAG
15
mm
Material
Neodymium

Diaphragm

Effective diameter
535
mm
Effective area
SD
2248
cm²
Moving mass
MMS
416.5
g
Moving mass (without air load)
MMD
341.9
g
Material
Paper

Suspensions

Stiffness
KMS
16.31
N/mm
Compliance
CMS
61
µm/N
Equivalent volume to the compliance
VAS
369
L
Mechanical resistance
RMS
5.84
N·s/m
Surround material
Fabric

Dimensions

Nominal diameter
24
610
mm
Overall diameter
632
mm
Baffle cutout diameter
573
mm
Overall depth
249
mm
Flange thickness
17
mm
Mounting depth
232
mm
Volume occupied by the driver (estimated)
15.0
L
Net weight
25.8
kg
Precision Devices PDN.2450 SPL & Impedance

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fS
30 Hz
SD
1730 cm²
25 - 1000 Hz
QTS
0.37
xmax
11.0 mm
SPL1W
95 dB
Bl/√RE
12
Pmax
3000 W