Rockford Fosgate R2D4-12

2x2Ω
2x4Ω

Subwoofer

12″ / 305 mm
Nominal diameter
35 Hz
Resonance
0.6
Q factor
89 dB
Sensitivity
± 6.5 mm
Linear excursion
500 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

Available on (affiliate link)

Amazon.com
$$

Specifications

Sensitivity (1W, 1m, infinite baffle)
SPL1W
88.5
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
34.9
Hz
Mechanical quality factor
QMS
7.33
Electrical quality factor
QES
0.66
Total quality factor
QTS
0.60

Large signal parameters

Maximum linear excursion
xmax
6.5
mm
Air volume displaced at xmax
VD
350
cm³
Power handling
P
250
W
Program power
Pmax
500
W

Voice Coil

Nominal impedance
Z
2 x 4
Ω
DC resistance (in series)
RE
7.2
Ω
Inductance (1kHz, in series)
LE
3.9
mH
VC Diameter
51
mm

Magnet

Force factor (in series)
Bl
17.2
N/A
Motor constant
Bl/√RE
6.42
N/√W
Weight
1.35
kg

Diaphragm

Effective diameter
262
mm
Effective area
SD
539
cm²
Moving mass
MMS
124.5
g
Moving mass (without air load)
MMD
115.9
g

Suspensions

Stiffness
KMS
5.99
N/mm
Compliance
CMS
167
µm/N
Equivalent volume to the compliance
VAS
68.8
L
Mechanical resistance
RMS
3.72
N·s/m

Dimensions

Nominal diameter
12
305
mm
Baffle cutout diameter
285
mm
Mounting depth
128
mm
Volume occupied by the driver
1.3
L

Export this driver to a simulation software:

WinISDWinISDBasta!Basta!HornrespHornrespQSpeakersQSpeakersSpeakerSimSpeakerSimMfbLabsMfbLabsSpeakerbenchSpeakerbench

Similar subwoofers to Rockford Fosgate R2D4-12

KICX ZC15 Subwoofer
KICX  ZC152 x 2 Ω
15Subwoofer
fS
37 Hz
SD
803 cm²
QTS
0.61
SPL1W
89 dB
Bl/√RE
9.76
Pmax
1400 W