Rockford Fosgate R2SD2-10
Shallow Subwoofer
10″ / 254 mm
Nominal diameter
38 Hz
Resonance
0.68
Q factor
85 dB
Sensitivity
± 8 mm
Linear excursion
400 W
Program Power
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
84.9
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
38.1
Hz
Mechanical quality factor
QMS
8.00
Electrical quality factor
QES
0.74
Total quality factor
QTS
0.68
Large signal parameters
Maximum linear excursion
xmax
8.0
mm
Air volume displaced at xmax
VD
266
cm³
Power handling
P
200
W
Program power
Pmax
400
W
Voice Coil
Nominal impedance
Z
2 x 2
Ω
DC resistance (in series)
RE
3.8
Ω
Inductance (1kHz, in series)
LE
4.2
mH
VC Diameter
51
mm
Magnet
Force factor (in series)
Bl
12.8
N/A
Motor constant
Bl/√RE
6.57
N/√W
Weight
1.28
kg
Diaphragm
Effective diameter
206
mm
Effective area
SD
333
cm²
Moving mass
MMS
134.2
g
Moving mass (without air load)
MMD
129.8
g
Suspensions
Stiffness
KMS
7.69
N/mm
Compliance
CMS
130
µm/N
Equivalent volume to the compliance
VAS
20.4
L
Mechanical resistance
RMS
4.02
N·s/m
Dimensions
Nominal diameter
10
″
254
mm
Baffle cutout diameter
232
mm
Mounting depth
86
mm
Volume occupied by the driver
1.05
L
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