Rockford Fosgate P3D4-12

2x2Ω
2x4Ω

Subwoofer

12″ / 305 mm
Nominal diameter
28 Hz
Resonance
0.52
Q factor
86 dB
Sensitivity
± 15.9 mm
Linear excursion
1200 W
Program Power
Rockford Fosgate P3D4-12 SubwooferRockford Fosgate P3D4-12 SubwooferRockford Fosgate P3D4-12 Subwoofer
Excursion
Velocity
SPL
Phase
Group delay
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
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Specifications

Sensitivity (1W, 1m, infinite baffle)
SPL1W
85.6
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
27.7
Hz
Mechanical quality factor
QMS
5.60
Electrical quality factor
QES
0.57
Total quality factor
QTS
0.52

Large signal parameters

Maximum linear excursion
xmax
15.9
mm
Air volume displaced at xmax
VD
906
cm³
Power handling
P
600
W
Program power
Pmax
1200
W

Voice Coil

Nominal impedance
Z
2 x 4
Ω
DC resistance (in series)
RE
6.4
Ω
Inductance (1kHz, in series)
LE
6.94
mH
VC Diameter
64
mm

Magnet

Force factor (in series)
Bl
22.7
N/A
Motor constant
Bl/√RE
8.97
N/√W
Weight
2.72
kg

Diaphragm

Effective diameter
269
mm
Effective area
SD
570
cm²
Moving mass
MMS
264.1
g
Moving mass (without air load)
MMD
255
g

Suspensions

Stiffness
KMS
8.0
N/mm
Compliance
CMS
125
µm/N
Equivalent volume to the compliance
VAS
57.7
L
Mechanical resistance
RMS
8.21
N·s/m

Dimensions

Nominal diameter
12
″
305
mm
Baffle cutout diameter
285
mm
Mounting depth
169
mm
Volume occupied by the driver
3.0
L
Impedance
Step response
Tone Burst
DatasheetDatasheet

Export this driver to a simulation software:

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SD
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QTS
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xmax
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Bl/√RE
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Pmax
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