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Eminence Alpha 2-8 2" 20W 8 Ohm Loudspeaker Driver
New to the American Standard Series is the Alpha 2 full range driver. Ideal for tight fitting column and line array applications, the Alpha 2 features a 0.64” copper voice coil and 2.7 oz. ferrite magnet. With under spider venting and a flux source cap, this 8 ohm driver lets the heat out while containing the magnetic flux, which is critical for multi-unit designs packed tightly together. Rated at 30 watts program power, the Alpha 2 has a wide usable frequency range of 200 Hz – 20 kHz.
SPECIFICATION:
THIELE & SMALL PARAMETERS:
MOUNTING INFORMATION:
MATERIALS OF CONSTRUCTION:
- Nominal Basket Diameter 2", 51 mm
- Nominal Impedance* 8 ohms Power Rating* Program Power 30 W Watts 20 W
- Resonance 186 Hz
- Usable Frequency Range 200 Hz - 20 kHz
- Sensitivity* 83.8 dB
- Magnet Weight 3 oz.
- Gap Height 0.12", 3 mm
- Voice Coil Diameter 0.64", 16 mm
THIELE & SMALL PARAMETERS:
- Resonant Frequency (fs) 186 Hz
- DC Resistance (Re) 6.4 ohms
- Coil Inductance (Le) 0.13m H
- Mechanical Q (Qms) 3.06
- Electromagnetic Q (Qes) 0.94
- Total Q (Qts) 0.72
- Compliance Equivalent Volume (Vas) 0.18 liters / 0.01 cu.ft.
- Peak Diaphragm Displacement Volume (Vd) 2.1 cc
- Mechanical Compliance of Suspension (Cms) 0.84 mm/N
- BL Product (BL) 2.64 T-M
- Diaphragm Mass Inc. Airload (MMs) 1 grams
- Efficiency Bandwidth Product (EBP) 198
- Maximum Linear Excursion (Xmax) 1.7 mm
- Surface Area of Cone (Sd) 12.4 cm2
- Maximum Mechanical Limit (Xlim) 2.2 mm
MOUNTING INFORMATION:
- Recommended Enclosure Volume Sealed N/a Vented N/a
- Driver Volume Displaced 0.071 cu.ft. / 2 liters
- Overall Diameter 2.13", 54.1 mm
- Baffle Hole Diameter 2", 50.8 mm
- Front Sealing Gasket Yes
- Rear Sealing Gasket N/A
- Mounting Holes Diameter 0.15", 3.8mm
- Mounting Holes B.C.D. 2.36", 59.9mm
- Depth 1.63", 41.4 mm
- Net Weight 0.4 lbs, 0.18 kg
- Shipping Weight 2 lbs, 0.91 kgs
MATERIALS OF CONSTRUCTION:
- Coil Construction Copper voice coil
- Coil Former Polyimide former
- Magnet Composition
- Core Details Solid / Flux source cap
- Basket Materials Pressed steel basket
- Cone Composition
- Cone Edge Composition Paper/Poly Sandwich Cone
- Dust Cap Composition Poly dust cap
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