Eminence Beta-15a American Standard Series Speakers (beta15a)

This item is brand-new, factory sealed.

This table charts the specifications for the BETA-15A speaker
* Nominal Basket Diameter: 15-in , 381 mm.
* Nominal Impedance: 8 Ohms.
* Power Rating:
* Watts: 300 W.
* Music Program: 600 W.
* Resonance: 35 Hz.
* Usable Frequency Range: 45 Hz - 3.7 kHz.
* Sensitivity: 98.2 dB.
* Magnet Weight: 34 oz..
* Gap Height: 0.312-in , 7.9 mm.
* Voice Coil Diameter: 2-in , 51 mm.
* Thiele & Small Parameters.
* Resonant Frequency (fs): 35 Hz.
* DC Resistance (Re): 6.32 Ohms.
* Coil Inductance (Le): 1.1m H.
* Mechanical Q (Qms): 8.1.
* Electromagnetic Q (Qes): 0.63.
* Total Q (Qts): 0.58.
* Compliance Equivalent Volume (Vas): 334.6 liters / 11.82 cu.ft..
* Peak Diaphragm Displacement Volume (Vd): 330 cc.
* Mechanical Compliance of Suspension (Cms): 0.35 mm/N.
* BL Product (BL): 11.5 T-M.
* Diaphragm Mass Inc. Airload (MMs): 60 grams.
* Efficiency Bandwidth Product (EBP): 56.
* Maximum Linear Excursion (Xmax): 4 mm.
* Surface Area of Cone (Sd): 823.7 cm2.
* Maximum Mechanical Limit (Xlim): 11.6 mm.
-----------------------------------
Recommended Enclosure Volume;
* Sealed: 45-62 liters / 1.6-2.2 cu.ft..
* Vented: 99-175.6 liters / 3.5-6.2 cu.ft..
* Driver Volume Displaced: 0.118 cu.ft. / 3.33 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: 6.05-in , 153.7 mm.
* Net Weight: 8.8 lbs, 3.99 kg.
* Shipping Weight: 10.8 lbs, 4.9 kgs.
* Materials of Construction.
* Coil Construction: Copper voice coil.
* Coil Former: Polyimide former.
* Magnet Composition: Ferrite magnet.
* Core Details: Vented & 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.