Skar Audio SDR-12 D2

2x2Ω
2x4Ω

Subwoofer

12″ / 308 mm
Nominal diameter
32 Hz
Resonance
0.53
Q factor
85 dB
Sensitivity
± 13.5 mm
Linear excursion
1200 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
Sensitivity (1W, 1m, infinite baffle)
SPL1W
84.5
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
32.0
Hz
Mechanical quality factor
QMS
6.76
Electrical quality factor
QES
0.58
Total quality factor
QTS
0.53

Large signal parameters

Maximum linear excursion
xmax
13.5
mm
Air volume displaced at xmax
VD
636
cm³
Power handling
P
600
W
Program power
Pmax
1200
W

Voice Coil

Nominal impedance
Z
2 x 2
Ω
DC resistance (in series)
RE
3.2
Ω
Inductance (1kHz, in series, estimated)
LE
1.29
mH
VC Diameter
64
mm
Winding material
Copper

Magnet

Force factor (in series)
Bl
16.67
N/A
Motor constant
Bl/√RE
9.32
N/√W
Diameter
155
mm

Diaphragm

Effective diameter
245
mm
Effective area
SD
471
cm²
Moving mass
MMS
249.4
g
Moving mass (without air load)
MMD
241.9
g
Material
Pressed Paper

Suspensions

Stiffness
KMS
8.7
N/mm
Compliance
CMS
115
µm/N
Equivalent volume to the compliance
VAS
36.2
L
Mechanical resistance
RMS
7.42
N·s/m
Surround material
Foam

Dimensions

Nominal diameter
12
308
mm
Overall diameter
308
mm
Baffle cutout diameter
285
mm
Overall depth
192
mm
Flange thickness
27
mm
Mounting depth
165
mm
Volume occupied by the driver (estimated)
3.5
L

Export this driver to a simulation software:

WinISDWinISDBasta!Basta!HornrespHornrespQSpeakersQSpeakersSpeakerSimSpeakerSimMfbLabsMfbLabsSpeakerbenchSpeakerbench

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fS
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SD
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QTS
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xmax
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