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
.png)
.png)
.png)
Available on (affiliate link)
Amazon.com
$$
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:
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
SpeakerbenchSimilar subwoofers to Rockford Fosgate R1S4-12
.jpg.webp)
10″Subwoofer
fS
34 Hz
SD
490 cm²
20 - 220 Hz
QTS
0.62
xmax
4.7 mm
SPL1W
88 dB
Bl/√RE
5.98
Pmax
500 W
.jpg.webp)
12″Subwoofer
fS
32 Hz
SD
524 cm²
28 - 300 Hz
QTS
0.62
xmax
9.0 mm
SPL1W
87 dB
Bl/√RE
6.17
Pmax
1000 W
.png.webp)
Rockford Fosgate RM112D22 x 2 Ω
12″Subwoofer
fS
29 Hz
SD
585 cm²
QTS
0.58
xmax
7.0 mm
SPL1W
88 dB
Bl/√RE
6.39
Pmax
400 W