Rockford Fosgate RM110D4

2x2Ω
2x4Ω

Subwoofer

10″ / 254 mm
Nominal diameter
35 Hz
Resonance
0.51
Q factor
88 dB
Sensitivity
± 7 mm
Linear excursion
400 W
Program Power
Rockford Fosgate RM110D4 SubwooferRockford Fosgate RM110D4 SubwooferRockford Fosgate RM110D4 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
87.9
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
35.0
Hz
Mechanical quality factor
QMS
7.95
Electrical quality factor
QES
0.55
Total quality factor
QTS
0.51

Large signal parameters

Maximum linear excursion
xmax
7.0
mm
Air volume displaced at xmax
VD
276
cm³
Power handling
P
200
W
Program power
Pmax
400
W

Voice Coil

Nominal impedance
Z
2 x 4
Ω
DC resistance (in series)
RE
7.5
Ω
Inductance (1kHz, in series)
LE
3.48
mH
VC Diameter
51
mm
Former material
Aluminum

Magnet

Force factor (in series)
Bl
16.6
N/A
Motor constant
Bl/√RE
6.06
N/√W
Weight
1.13
kg

Diaphragm

Effective diameter
224
mm
Effective area
SD
394
cm²
Moving mass
MMS
90.7
g
Moving mass (without air load)
MMD
85.4
g

Suspensions

Stiffness
KMS
4.39
N/mm
Compliance
CMS
228
µm/N
Equivalent volume to the compliance
VAS
50.2
L
Mechanical resistance
RMS
2.51
N·s/m

Dimensions

Nominal diameter
10
″
254
mm
Baffle cutout diameter
227
mm
Mounting depth
112
mm
Volume occupied by the driver
2.83
L
Impedance
Step response
Tone Burst
DatasheetDatasheet

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12″Subwoofer
fS
33 Hz
SD
552 cm²
33 - 450 Hz
QTS
0.57
xmax
8.5 mm
SPL1W
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Bl/√RE
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Pmax
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