Eminence ALPHA 2-8
8Ω
Full-range
Nominal diameter | 2″ / 51 mm |
Resonance | 186 Hz |
Q factor | 0.72 |
Sensitivity | 81.5 dB |
Linear excursion | ± 1.7 mm |
Program Power | 30 W |
Discontinued
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- Sensitivity (1W, 1m, infinite baffle) SPL1W 81.5dB
- Frequency response 200 - 20000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 186Hz
- Mechanical quality factor QMS 3.06
- Electrical quality factor QES 0.94
- Total quality factor QTS 0.72
Large signal parameters
- Maximum linear excursion xmax 1.7mm
- Maximum excursion before damage xlim 2.2mm
- Air volume displaced at xmax VD 2.1cm³
- Power handling P 20W
- Program power Pmax 30W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 6.4Ω
- Inductance (1kHz) LE 0.13mH
- VC Diameter 16mm
- Winding material Copper
- Former material Polyimide
Magnet
- Force factor Bl 2.64N/A
- Motor constant Bl/√RE 1.04N/√W
- Air gap height HAG 3mm
- Weight 0.085kg
Diaphragm
- Effective diameter 40mm
- Effective area SD 12.4cm²
- Moving mass MMS 1g
- Moving mass (without air load) MMD 1g
Suspensions
- Stiffness KMS 1.19N/mm
- Compliance CMS 840µm/N
- Equivalent volume to the compliance VAS 0.18L
- Mechanical resistance RMS 0.38N·s/m
- Surround material Paper/Poly Sandwich
Dimensions
- Nominal diameter 2″
- 51mm
- Overall diameter 54mm
- Baffle cutout diameter 51mm
- Volume occupied by the driver 0.03L
- Net weight 0.18kg
- Frame material Pressed steel
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