Eminence BETA-12A
8Ω
Woofer
Nominal diameter | 12″ / 305 mm |
Resonance | 47 Hz |
Q factor | 0.46 |
Sensitivity | 95.1 dB |
Linear excursion | ± 4.4 mm |
Program Power | 500 W |
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- Sensitivity (1W, 1m, infinite baffle) SPL1W 95.1dB
- Frequency response 43 - 3800Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 47Hz
- Mechanical quality factor QMS 6.00
- Electrical quality factor QES 0.50
- Total quality factor QTS 0.46
Large signal parameters
- Maximum linear excursion xmax 4.4mm
- Maximum excursion before damage xlim 11mm
- Air volume displaced at xmax VD 237cm³
- Power handling P 250W
- Program power Pmax 500W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 5.0Ω
- Inductance (1kHz) LE 0.64mH
- VC Diameter 50.8mm
- Winding material Copper
- Former material Polyimide
Magnet
- Force factor Bl 10.8N/A
- Motor constant Bl/√RE 4.83N/√W
- Air gap height HAG 7.9mm
- Weight 1.077kg
- Material Ferrite
Diaphragm
- Effective diameter 262mm
- Effective area SD 539cm²
- Moving mass MMS 40g
- Moving mass (without air load) MMD 31.3g
- Material Paper
Suspensions
- Stiffness KMS 3.45N/mm
- Compliance CMS 290µm/N
- Equivalent volume to the compliance VAS 120L
- Mechanical resistance RMS 1.97N·s/m
- Surround material Cloth
Dimensions
- Nominal diameter 12″
- 305mm
- Overall diameter 306mm
- Baffle cutout diameter 281mm
- Overall depth 140mm
- Volume occupied by the driver 2.01L
- Net weight 3.402kg
- Frame material Pressed Steel
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