HELIX K 12W
Subwoofer
12″ / 300 mm
Nominal diameter
32 Hz
Resonance
0.41
Q factor
89 dB
Sensitivity
± 8 mm
Linear excursion
600 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
88.6
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
32.0
Hz
Mechanical quality factor
QMS
3.70
Electrical quality factor
QES
0.46
Total quality factor
QTS
0.41
Large signal parameters
Maximum linear excursion
xmax
8.0
mm
Air volume displaced at xmax
VD
412
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
3.2
Ω
Inductance (1kHz, in series, estimated)
LE
0.88
mH
VC Diameter
51
mm
Winding height
HVC
24
mm
Magnet
Force factor (in series)
Bl
13.7
N/A
Motor constant
Bl/√RE
7.66
N/√W
Diaphragm
Effective diameter
256
mm
Effective area
SD
515
cm²
Moving mass
MMS
134
g
Moving mass (without air load)
MMD
125.5
g
Suspensions
Stiffness
KMS
5.59
N/mm
Compliance
CMS
179
µm/N
Equivalent volume to the compliance
VAS
66
L
Mechanical resistance
RMS
7.33
N·s/m
Dimensions
Nominal diameter
12
″
300
mm
Overall diameter
316
mm
Baffle cutout diameter
286
mm
Mounting depth
144
mm
Volume occupied by the driver (estimated)
2.7
L
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