Rockford Fosgate R1S4-12

Subwoofer

12″ / 319 mm
Nominal diameter
31 Hz
Resonance
0.54
Q factor
88 dB
Sensitivity
± 7 mm
Linear excursion
400 W
Program Power
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

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Specifications

Sensitivity (1W, 1m, infinite baffle)
SPL1W
88.4
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
30.5
Hz
Mechanical quality factor
QMS
7.97
Electrical quality factor
QES
0.58
Total quality factor
QTS
0.54

Large signal parameters

Maximum linear excursion
xmax
7.0
mm
Air volume displaced at xmax
VD
372
cm³
Power handling
P
200
W
Program power
Pmax
400
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.5
Ω
Inductance (1kHz)
LE
2.1
mH
VC Diameter
51
mm

Magnet

Force factor
Bl
11.8
N/A
Motor constant
Bl/√RE
6.31
N/√W
Weight
1.13
kg

Diaphragm

Effective diameter
260
mm
Effective area
SD
531
cm²
Moving mass
MMS
120.5
g
Moving mass (without air load)
MMD
111.7
g

Suspensions

Stiffness
KMS
4.43
N/mm
Compliance
CMS
226
µm/N
Equivalent volume to the compliance
VAS
90.4
L
Mechanical resistance
RMS
2.9
N·s/m

Dimensions

Nominal diameter
12
319
mm
Overall diameter
319
mm
Baffle cutout diameter
285
mm
Mounting depth
125
mm
Volume occupied by the driver
2.83
L

Export this driver to a simulation software:

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