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| [Eminence Alpha 12] |
| Eminence Alpha 12 |
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| ALPHA-12A Series Standard American
Recommended for professional audio mid-bass applications in a small sealed or medium vented enclosure.
SPECIFICATION
* Nominal Basket Diameter 12", 304.8 mm
* Nominal Impedance 8 ohms
* Power Rating Watts 150 W / Music Program 450 W
* Resonance 49 Hz
* Usable Frequency Range 51 Hz - 4.3 kHz
* Sensitivity 95.6
* Magnet Weight 20 oz.
* Gap Height 0.25", 6.35 mm
* Voice Coil Diameter 1.5", 38.1 mm
THIELE & Small Parameters
* Resonant Frequency (fs) 49 Hz
* DC Resistance (Re) 6.3
* Coil Inductance (Le) 0.79 mH
* Mechanical Q (Qms) 6.53
* Electromagnetic Q (Qes) 0.88
* Total Q (Qts) 0.77
* Compliance Equivalent Volume (Vas) 121.5 liters / 4.3 cu. ft.
* Peak Diaphragm Displacement Volume (Vd) 125 cc
* Mechanical Compliance of Suspension (Cms) 0.32 mm/N
* BL Product (BL) 8.5 T-M
* Diaphragm Mass inc. Airload (Mms) 33 grams
* Efficiency Bandwidth Product (EBP) 56
* Maximum Linear Excursion (Xmax) 2.4 mm
* Surface Area of Cone (Sd) 519.5 cm²
* Maximum Mechanical Limit (Xlim) 6.6 mm
MOUNTING Information
* Recommended Enclosure Volume
Sealed 17-22.7 liters / 0.6-0.8 cu. ft.
Vented 56.6-113.3 liters / 2-4 cu. ft.
* Overall Diameter 12.26", 311.4 mm
* Baffle Hole Diameter 11", 279.5 mm
* Front Sealing Gasket fitted as standard
* Rear Sealing Gasket fitted as standard
* Mounting Holes Diameter 0.25", 6.4 mm
* Mounting Holes B.C.D. 11.71", 297.5 mm
* Depth 4.73", 120 mm
MATERIALS of Construction
* Copper voice coil
* Polyimide former
* Ferrite magnet
* Vented and extended core
* Pressed steel basket
* Paper Cone
* Cloth cone edge
* Solid composition felt dust cap |
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Drivers
