Rockford Fosgate PM210S4B

Subwoofer

10″ / 254 mm
Nominal diameter
45 Hz
Resonance
0.57
Q factor
87 dB
Sensitivity
± 10 mm
Linear excursion
500 W
Program Power
Rockford Fosgate PM210S4B SubwooferRockford Fosgate PM210S4B SubwooferRockford Fosgate PM210S4B 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
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
86.6
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
45.0
Hz
Mechanical quality factor
QMS
9.00
Electrical quality factor
QES
0.61
Total quality factor
QTS
0.57

Large signal parameters

Maximum linear excursion
xmax
10.0
mm
Air volume displaced at xmax
VD
346
cm³
Power handling
P
250
W
Program power
Pmax
500
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.6
Ω
Inductance (1kHz)
LE
0.3
mH
VC Diameter
51
mm
Former material
Aluminum

Magnet

Force factor
Bl
13.3
N/A
Motor constant
Bl/√RE
7.01
N/√W
Weight
1.54
kg

Diaphragm

Effective diameter
210
mm
Effective area
SD
346
cm²
Moving mass
MMS
105.1
g
Moving mass (without air load)
MMD
100.5
g

Suspensions

Stiffness
KMS
8.4
N/mm
Compliance
CMS
119
µm/N
Equivalent volume to the compliance
VAS
20.2
L
Mechanical resistance
RMS
3.3
N·s/m

Dimensions

Nominal diameter
10
″
254
mm
Baffle cutout diameter
228
mm
Mounting depth
140
mm
Volume occupied by the driver
4.36
L
Impedance
Step response
Tone Burst
DatasheetDatasheet

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fS
46 Hz
SD
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QTS
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xmax
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SPL1W
87 dB
Bl/√RE
4.66
Pmax
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