SB Acoustics SB12PFC25-8
4Ω
8Ω
Mid Bass
Nominal diameter | 4″ / 102 mm |
Resonance | 64 Hz |
Q factor | 0.56 |
Sensitivity | 84.2 dB |
Linear excursion | ± 5 mm |
Program Power | 60 W |
Discontinued
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- Sensitivity (1W, 1m, infinite baffle) SPL1W 84.2dB
Thiele & Small parameters
- Resonance frequency (free air) fS 64Hz
- Mechanical quality factor QMS 4.10
- Electrical quality factor QES 0.65
- Total quality factor QTS 0.56
Large signal parameters
- Maximum linear excursion xmax 5mm
- Air volume displaced at xmax VD 25cm³
- Power handling P 30W
- Program power Pmax 60W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 6.4Ω
- Inductance (1kHz) LE 0.36mH
- VC Diameter 25.4mm
- Winding height HVC 15mm
Magnet
- Flux density B 0.84T
- Force factor Bl 4.5N/A
- Motor constant Bl/√RE 1.78N/√W
- Air gap height HAG 5mm
- Weight 0.32kg
Diaphragm
- Effective diameter 80mm
- Effective area SD 50cm²
- Moving mass MMS 5.1g
- Moving mass (without air load) MMD 4.8g
Suspensions
- Stiffness KMS 0.826N/mm
- Compliance CMS 1210µm/N
- Equivalent volume to the compliance VAS 4.3L
- Mechanical resistance RMS 0.5N·s/m
Dimensions
- Nominal diameter 4″
- 102mm
- Volume occupied by the driver (estimated) 0.27L
- Net weight 0.7kg
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