SICA 12 K 4 PL

Woofer

12″ / 321 mm
Nominal diameter
48 Hz
Resonance
0.24
Q factor
95 dB
Sensitivity
± 7 mm
Linear excursion
2000 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
94.9
dB
Frequency response
50 - 3000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
48.0
Hz
Mechanical quality factor
QMS
4.41
Electrical quality factor
QES
0.25
Total quality factor
QTS
0.24

Large signal parameters

Maximum linear excursion
xmax
7.0
mm
Air volume displaced at xmax
VD
372
cm³
Power handling
P
1000
W
Program power
Pmax
2000
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.2
Ω
Inductance (1kHz)
LE
0.74
mH
VC Diameter
100
mm
Winding height
HVC
12
mm
Winding material
Copper
Former material
Kapton

Magnet

Flux density
B
1.1
T
Force factor
Bl
24.7
N/A
Motor constant
Bl/√RE
10.8
N/√W
Weight
0.536
kg
Material
Neodymium

Diaphragm

Effective diameter
260
mm
Effective area
SD
531
cm²
Moving mass
MMS
93.6
g
Moving mass (without air load)
MMD
84.7
g
Material
Paper

Suspensions

Stiffness
KMS
8.7
N/mm
Compliance
CMS
115
µm/N
Equivalent volume to the compliance
VAS
46.3
L
Mechanical resistance
RMS
6.4
N·s/m
Surround material
Treated Cloth

Dimensions

Nominal diameter
12
321
mm
Overall diameter
320
mm
Baffle cutout diameter
284
mm
Overall depth
155
mm
Volume occupied by the driver (estimated)
3.0
L
Net weight
6.6
kg
Frame material
Aluminium Die-Cast
SICA 12 K 4 PL SPL & Impedance
SICA 12 K 4 PL Dimensions

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fS
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SD
346 cm²
50 - 3000 Hz
QTS
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xmax
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Pmax
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fS
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SD
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QTS
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xmax
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