SICA 21 S 4 PL
8Ω
Subwoofer
| Nominal diameter | 21″ / 545 mm |
| Resonance | 34.6 Hz |
| Q factor | 0.30 |
| Sensitivity | 96.6 dB |
| Linear excursion | ± 5.2 mm |
| Program Power | 2400 W |
.jpg)
.jpg)
.jpg)
Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 96.6dB
- Frequency response 35 - 500Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 34.6Hz
- Mechanical quality factor QMS 9.95
- Electrical quality factor QES 0.31
- Total quality factor QTS 0.30
Large signal parameters
- Maximum linear excursion (one way) xmax 5.2mm
- Air volume displaced at xmax VD 864cm³
- Power handling P 1200W
- Program power Pmax 2400W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 5.7Ω
- Inductance (1kHz) LE 1.6mH
- VC Diameter 100mm
- Winding height HVC 17mm
- Winding material Copper
- Former material Glass Fiber
Magnet
- Flux density B 0.89T
- Force factor Bl 36.1N/A
- Motor constant Bl/√RE 15.1N/√W
- Weight 0.536kg
- Material Neodymium
Diaphragm
- Effective diameter 460mm
- Effective area SD 1662cm²
- Moving mass MMS 325g
- Moving mass (without air load) MMD 278g
- Material Paper
Suspensions
- Stiffness KMS 15.4N/mm
- Compliance CMS 65µm/N
- Equivalent volume to the compliance VAS 255L
- Mechanical resistance RMS 7.1N·s/m
- Surround material Treated Cloth
Dimensions
- Nominal diameter 21″
- 545mm
- Overall diameter 545mm
- Baffle cutout diameter 497mm
- Overall depth 249mm
- Volume occupied by the driver (estimated) 7.8L
- Net weight 10.5kg
- Frame material Aluminium Die-Cast
.png)
.png)
Export this driver to a simulation software:
Closed Box Simulator·
Speakerbench
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
Amplion.png.webp)
.jpg.webp)
.png.webp)