SICA 18 S 4 CP
Subwoofer
18″ / 463 mm
Nominal diameter
33 Hz
Resonance
0.35
Q factor
94 dB
Sensitivity
± 11 mm
Linear excursion
2400 W
Program Power
![SICA 18 S 4 CP Subwoofer](/SICA/18S4CP/SICA_18S4CP_(Photo_1).jpg)
![SICA 18 S 4 CP Subwoofer](/SICA/18S4CP/SICA_18S4CP_(Photo_2).jpg)
![SICA 18 S 4 CP Subwoofer](/SICA/18S4CP/SICA_18S4CP_(Photo_3).jpg)
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 94.3
- dB
- Frequency response
- 30 - 700
- Hz
- Resonance frequency (free air)
- fS
- 33.0
- Hz
- Mechanical quality factor
- QMS
- 3.94
- Electrical quality factor
- QES
- 0.39
- Total quality factor
- QTS
- 0.35
- Maximum linear excursion
- xmax
- 11.0
- mm
- Air volume displaced at xmax
- VD
- 1281
- cm³
- Power handling
- P
- 1200
- W
- Program power
- Pmax
- 2400
- W
- Nominal impedance
- Z
- 8
- Ω
- DC resistance
- RE
- 5.2
- Ω
- Inductance (1kHz)
- LE
- 1.81
- mH
- VC Diameter
- 100
- mm
- Winding height
- HVC
- 12
- mm
- Winding material
- Copper
- Former material
- Glass Fiber
- Flux density
- B
- 1.15
- T
- Force factor
- Bl
- 23.5
- N/A
- Motor constant
- Bl/√RE
- 10.3
- N/√W
- Weight
- 3.3
- kg
- Material
- Ferrite
- Effective diameter
- 385
- mm
- Effective area
- SD
- 1164
- cm²
- Moving mass
- MMS
- 198.6
- g
- Moving mass (without air load)
- MMD
- 170.4
- g
- Material
- Paper
- Stiffness
- KMS
- 8.55
- N/mm
- Compliance
- CMS
- 117
- µm/N
- Equivalent volume to the compliance
- VAS
- 225
- L
- Mechanical resistance
- RMS
- 10.45
- N·s/m
- Surround material
- Treated Cloth
- Nominal diameter
- 18
- ″
- 463
- mm
- Overall diameter
- 462
- mm
- Baffle cutout diameter
- 417
- mm
- Overall depth
- 204
- mm
- Volume occupied by the driver (estimated)
- 7.5
- L
- Net weight
- 14.2
- kg
- Frame material
- Aluminium Die-Cast
Thiele & Small parameters
Large signal parameters
Voice Coil
Magnet
Diaphragm
Suspensions
Dimensions
![SICA 18 S 4 CP SPL & Impedance](/SICA/18S4CP/SICA_18S4CP_(Frequency_response_+_Impedance).png)
![SICA 18 S 4 CP Dimensions](/SICA/18S4CP/SICA_18S4CP_(Dimensions).png)
Export this driver to a simulation software:
![WinISD](/images/export/WinISD.png)
![Basta!](/images/export/Basta.png)
![Hornresp](/images/export/Hornresp.png)
![QSpeakers](/images/export/QSpeakers.png)
![SpeakerSim](/images/export/SpeakerSim.png)
![MfbLabs](/images/export/MfbLabs.png)
![Speakerbench](/images/export/Speakerbench.png)