Eminence Alpha-15a 15" Bass Guitar Speaker (alpha15a)

This item is brand-new, factory sealed.

This table charts the specifications for the ALPHA-15A speaker
* Nominal Basket Diameter: 15-in , 381 mm.
* Nominal Impedance: 8 Ohms.
* Power Rating:
* Watts: 200 W.
* Music Program: 400 W.
* Resonance: 41 Hz.
* Usable Frequency Range: 46 Hz - 3.5 kHz.
* Sensitivity: 97 dB.
* Magnet Weight: 25 oz..
* Gap Height: 0.25-in , 6.4 mm.
* Voice Coil Diameter: 1.5-in , 38 mm.
* Thiele & Small Parameters.
* Resonant Frequency (fs): 41 Hz.
* DC Resistance (Re): 5.88 Ohms.
* 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.
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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-in , 384.8 mm.
* Baffle Hole Diameter: 13.87-in , 352.3 mm.
* Front Sealing Gasket: Yes.
* Rear Sealing Gasket: Yes.
* Mounting Holes Diameter: 0.25-in , 6.4mm.
* Mounting Holes B.C.D.: 14.56-in , 369.8mm.
* Depth: 5.83-in , 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 & extended core.
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* Basket Materials: Pressed steel basket.
* Cone Composition: Paper cone.
* Cone Edge Composition: Cloth cone edge.
* Dust Cap Composition: Solid composition paper dust cap.