Celestion CF0820M
8Ω
Low frequency
| Nominal diameter | 8″ / 200 mm |
| Resonance | 202 Hz |
| Q factor | 0.57 |
| Sensitivity | 95.9 dB |
| Linear excursion | ± 3.5 mm |
| Program Power | 500 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 95.9dB
- Frequency response 150 - 6000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 202Hz
- Mechanical quality factor QMS 1.78
- Electrical quality factor QES 0.83
- Total quality factor QTS 0.57
Large signal parameters
- Maximum linear excursion (one way) xmax 3.5mm
- Air volume displaced at xmax VD 79cm³
- Power handling P 250W
- Program power Pmax 500W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 5.4Ω
- Inductance (1kHz) LE 0.12mH
- VC Diameter 50mm
- Winding height HVC 11mm
- Winding material Copper clad aluminium
- Former material Glass fibre
Magnet
- Force factor Bl 13.3N/A
- Motor constant Bl/√RE 5.72N/√W
- Air gap height HAG 8mm
- Weight 1.3kg
- Material Ferrite
Diaphragm
- Effective diameter 170mm
- Effective area SD 227cm²
- Moving mass MMS 21.4g
- Moving mass (without air load) MMD 18.8g
- Material Treated paper
Suspensions
- Stiffness KMS 33.3N/mm
- Compliance CMS 30µm/N
- Equivalent volume to the compliance VAS 2.12L
- Mechanical resistance RMS 15.2N·s/m
- Surround material Cloth-sealed
Dimensions
- Nominal diameter 8″
- 200mm
- Overall diameter 215mm
- Baffle cutout diameter 187mm
- Overall depth 113mm
- Volume occupied by the driver (estimated) 1.2L
- Net weight 3.4kg
- Frame material Cast aluminium
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