Eminence Alpha 15A 8 Ohm 15-Inch 200W Professional Audio Woofer Speaker - Perfect for PA Systems, Bass Guitar Amps, and Home Theater Subwoofers
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Description
Recommended for professional audio as a woofer in a vented or sealed enclosure. Also suitable for bass guitar applications.
| Specification | |
| Nominal Basket Diameter | 15", 381 mm |
| Nominal Impedance* | 8 Ω |
| Power Rating* | |
| Program Power | 400 W |
| Watts | 200 W |
| Resonance | 41 Hz |
| Usable Frequency Range | 46 Hz - 3.5 kHz |
| Sensitivity* | 97 dB |
| Magnet Weight | 25 oz. |
| Gap Height | 0.25", 6.4 mm |
| Voice Coil Diameter | 1.5", 38 mm |
| Thiele & Small Parameters | |
| Resonant Frequency (fs) | 41 Hz |
| DC Resistance (Re) | 5.88 Ω |
| Coil Inductance (Le) | 0.84m H |
| Mechanical Q (Qms) | 7.23 |
| Electromagnetic Q (Qes) | 1.53 |
| Total Q (Qts) | 1.26 |
| Compliance Equivalent Volume (Vas) | 260 liters / 9.18 cu.ft. |
| Peak Diaphragm Displacement Volume (Vd) | 325 cc |
| Mechanical Compliance of Suspension (Cms) | 0.25 mm/N |
| BL Product (BL) | 7.7 T-M |
| Diaphragm Mass Inc. Airload (MMs) | 59 grams |
| Efficiency Bandwidth Product (EBP) | 27 |
| Maximum Linear Excursion (Xmax) | 3.8 mm |
| Surface Area of Cone (Sd) | 856.3 cm2 |
| Maximum Mechanical Limit (Xlim) | 8.4 mm |
| Mounting Information | |
| Recommended Enclosure Volume | |
| Sealed | 71-85 liters / 2.5-3 cu.ft. |
| Vented | 106-177 liters / 3.75-6.25 cu.ft. |
| Driver Volume Displaced | 0.113 cu.ft. / 3.21 liters |
| Overall Diameter | 15.15", 384.8 mm |
| Baffle Hole Diameter | 13.87", 352.3 mm |
| Front Sealing Gasket | Yes |
| Rear Sealing Gasket | Yes |
| Mounting Holes Diameter | 0.25", 6.4mm |
| Mounting Holes B.C.D. | 14.56", 369.8mm |
| Depth | 5.83", 148.1 mm |
| Net Weight | 6.7 lbs, 3.04 kg |
| Shipping Weight | 8.8 lbs, 3.99 kgs |
| Materials of Construction | |
| Coil Construction | Copper voice coil |
| Coil Former | Polyimide former |
| Magnet Composition | Ferrite magnet |
| Core Details | Vented and extended core |
| Basket Materials | Pressed steel basket |
| Cone Composition | Paper cone |
| Cone Edge Composition | Cloth cone edge |
| Dust Cap Composition | Solid composition paper dust cap |
