HELIX IK S12
Shallow subwoofer
12″ / 300 mm
Nominal diameter
36 Hz
Resonance
0.48
Q factor
87 dB
Sensitivity
± 8 mm
Linear excursion
600 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.8
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
36.0
Hz
Mechanical quality factor
QMS
5.41
Electrical quality factor
QES
0.52
Total quality factor
QTS
0.48
Large signal parameters
Maximum linear excursion
xmax
8.0
mm
Air volume displaced at xmax
VD
418
cm³
Power handling
P
300
W
Program power
Pmax
600
W
Voice Coil
Nominal impedance
Z
2 x 2
Ω
DC resistance (in series)
RE
3.1
Ω
Inductance (1kHz, in series, estimated)
LE
1.16
mH
VC Diameter
51
mm
Winding height
HVC
24
mm
Magnet
Force factor (in series)
Bl
17.2
N/A
Motor constant
Bl/√RE
9.77
N/√W
Diaphragm
Effective diameter
258
mm
Effective area
SD
523
cm²
Moving mass
MMS
220
g
Moving mass (without air load)
MMD
211.4
g
Suspensions
Stiffness
KMS
10.53
N/mm
Compliance
CMS
95
µm/N
Equivalent volume to the compliance
VAS
40
L
Mechanical resistance
RMS
7.9
N·s/m
Dimensions
Nominal diameter
12
″
300
mm
Overall diameter
316
mm
Baffle cutout diameter
277
mm
Mounting depth
96
mm
Volume occupied by the driver (estimated)
2.7
L
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fS
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SD
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QTS
0.54
xmax
17.0 mm
SPL1W
87 dB
Bl/√RE
8.94
Pmax
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12″Subwoofer
fS
38 Hz
SD
480 cm²
QTS
0.53
xmax
17.0 mm
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fS
34 Hz
SD
353 cm²
20 - 800 Hz
QTS
0.46
xmax
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SPL1W
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Bl/√RE
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