Eminence American Standard 8A Speaker - 225 W RMS - 450 W PMPO - 78 Hz to 4.50 kHz - 8 Ohm - 8.24" BETA8A

This item is brand-new, factory sealed.

This table charts the specifications for the BETA-8A speaker
* Nominal Basket Diameter: 8-in , 203 mm.
* Nominal Impedance: 8 Ohms.
* Power Rating:
* Watts: 225 W.
* Music Program: 450 W.
* Resonance: 65 Hz.
* Usable Frequency Range: 78 Hz - 4.5 kHz.
* Sensitivity: 95.1 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): 65 Hz.
* DC Resistance (Re): 5.99 Ohms.
* Coil Inductance (Le): 0.49m H.
* Mechanical Q (Qms): 4.95.
* Electromagnetic Q (Qes): 0.42.
* Total Q (Qts): 0.38.
* Compliance Equivalent Volume (Vas): 23.3 liters / 0.82 cu.ft..
* Peak Diaphragm Displacement Volume (Vd): 63 cc.
* Mechanical Compliance of Suspension (Cms): 0.37 mm/N.
* BL Product (BL): 9.6 T-M.
* Diaphragm Mass Inc. Airload (MMs): 16 grams.
* Efficiency Bandwidth Product (EBP): 156.
* Maximum Linear Excursion (Xmax): 3 mm.
* Surface Area of Cone (Sd): 210 cm2.
* Maximum Mechanical Limit (Xlim): 7.4 mm.
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Recommended Enclosure Volume;
* Sealed: 5.7-9.9 liters / 0.2-0.35 cu.ft..
* Vented: 8.5-19 liters / 0.3-0.67 cu.ft..
* Driver Volume Displaced: 0.027 cu.ft. / 0.76 liters.
* Overall Diameter: 8.24-in , 209.3 mm.
* Baffle Hole Diameter: 7.13-in , 181.1 mm.
* Front Sealing Gasket: Yes.
* Rear Sealing Gasket: Yes.
* Mounting Holes Diameter: 0.22-in , 5.6mm.
* Mounting Holes B.C.D.: 7.75-in , 196.9mm.
* Depth: 3.5-in , 88.9 mm.
* Net Weight: 6.6 lbs, 2.99 kg.
* Shipping Weight: 7.4 lbs, 3.36 kgs.
* Materials of Construction.
* Coil Construction: Aluminum voice coil.
* Coil Former: Polyimide former.
* Magnet Composition: Ferrite magnet.
* Core Details: Vented 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.