SB Acoustics SB23MFCL45-8
4Ω
8Ω
Subwoofer
Nominal diameter | 8″ / 203 mm |
Resonance | 28.5 Hz |
Q factor | 0.43 |
Sensitivity | 84.4 dB |
Linear excursion | ± 10.5 mm |
Program Power | 300 W |
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- Sensitivity (1W, 1m, infinite baffle) SPL1W 84.4dB
Thiele & Small parameters
- Resonance frequency (free air) fS 28.5Hz
- Mechanical quality factor QMS 7.30
- Electrical quality factor QES 0.46
- Total quality factor QTS 0.43
Large signal parameters
- Maximum linear excursion xmax 10.5mm
- Air volume displaced at xmax VD 221cm³
- Power handling P 150W
- Program power Pmax 300W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 6.2Ω
- Inductance (1kHz) LE 1.02mH
- VC Diameter 45.5mm
- Winding height HVC 29.2mm
- Winding material Copper
- Former material Glass Fiber
Magnet
- Flux density B 1.03T
- Force factor Bl 11.3N/A
- Motor constant Bl/√RE 4.54N/√W
- Air gap height HAG 8mm
- Weight 2.0kg
Diaphragm
- Effective diameter 164mm
- Effective area SD 210cm²
- Moving mass MMS 53g
- Moving mass (without air load) MMD 50.8g
- Material Polypropylene
Suspensions
- Stiffness KMS 1.7N/mm
- Compliance CMS 590µm/N
- Equivalent volume to the compliance VAS 37L
- Mechanical resistance RMS 1.3N·s/m
- Surround material Rubber
Dimensions
- Nominal diameter 8″
- 203mm
- Volume occupied by the driver (estimated) 2L
- Net weight 4.7kg
- Frame material Cast aluminium
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