12″ / 325 mm
Nominal diameter
30 Hz
Resonance
0.31
Q factor
86 dB
Sensitivity
± 23 mm
Linear excursion
4000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
85.6
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
29.5
Hz
Mechanical quality factor
QMS
4.31
Electrical quality factor
QES
0.34
Total quality factor
QTS
0.31
Large signal parameters
Maximum linear excursion
xmax
23.0
mm
Air volume displaced at xmax
VD
1219
cm³
Power handling
P
2000
W
Program power
Pmax
4000
W
Voice Coil
Nominal impedance
Z
1
Ω
DC resistance
RE
0.3
Ω
Inductance (1kHz, estimated)
LE
0.16
mH
VC Diameter
81
mm
Winding material
round copper
Magnet
Force factor
Bl
8.7
N/A
Motor constant
Bl/√RE
15.9
N/√W
Diameter
210
mm
Height
54
mm
Diaphragm
Effective diameter
260
mm
Effective area
SD
530
cm²
Moving mass
MMS
410
g
Moving mass (without air load)
MMD
401
g
Material
Paper with glass fiber
Suspensions
Stiffness
KMS
12.05
N/mm
Compliance
CMS
83
µm/N
Equivalent volume to the compliance
VAS
33.2
L
Mechanical resistance
RMS
17.63
N·s/m
Dimensions
Nominal diameter
12
″
325
mm
Overall diameter
325
mm
Baffle cutout diameter
308
mm
Mounting depth
188
mm
Volume occupied by the driver
4.0
L
Net weight
18.2
kg
Frame material
Aluminium
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SpeakerbenchSimilar subwoofers to Pride M20.12 S1
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Fi Car Audio SP4 12v2+ D22 x 2 Ω
12″Subwoofer
fS
28 Hz
SD
480 cm²
QTS
0.29
xmax
33.0 mm
SPL1W
85 dB
Bl/√RE
15
Pmax
7000 W
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Fi Car Audio SP4 12v2+ D12 x 1 Ω
12″Subwoofer
fS
28 Hz
SD
480 cm²
QTS
0.29
xmax
33.0 mm
SPL1W
85 dB
Bl/√RE
15
Pmax
7000 W