Rockford Fosgate R2D2-10
Subwoofer
10″ / 254 mm
Nominal diameter
35 Hz
Resonance
0.47
Q factor
87 dB
Sensitivity
± 6.5 mm
Linear excursion
500 W
Program Power
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
87.3
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
34.6
Hz
Mechanical quality factor
QMS
6.93
Electrical quality factor
QES
0.50
Total quality factor
QTS
0.47
Large signal parameters
Maximum linear excursion
xmax
6.5
mm
Air volume displaced at xmax
VD
221
cm³
Power handling
P
250
W
Program power
Pmax
500
W
Voice Coil
Nominal impedance
Z
2 x 2
Ω
DC resistance (in series)
RE
3.8
Ω
Inductance (1kHz, in series)
LE
3.9
mH
VC Diameter
51
mm
Magnet
Force factor (in series)
Bl
12.2
N/A
Motor constant
Bl/√RE
6.23
N/√W
Weight
1.22
kg
Diaphragm
Effective diameter
208
mm
Effective area
SD
340
cm²
Moving mass
MMS
88.9
g
Moving mass (without air load)
MMD
84.4
g
Suspensions
Stiffness
KMS
4.2
N/mm
Compliance
CMS
238
µm/N
Equivalent volume to the compliance
VAS
39
L
Mechanical resistance
RMS
2.79
N·s/m
Dimensions
Nominal diameter
10
″
254
mm
Baffle cutout diameter
232
mm
Mounting depth
109
mm
Volume occupied by the driver
1.1
L
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