Eminence American Standard BETA-10A Speaker - 250 W RMS - 500 W PMPO

This item is brand-new, factory sealed.

* Nominal Basket Diameter: 10-in, 254 mm.
* Nominal Impedance: 8 Ohms.
* Power Rating:
* Watts: 250 W.
* Music Program: 500 W.
* Resonance: 53 Hz.
* Usable Frequency Range: 51 Hz - 3.8 kHz.
* Sensitivity: 97 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): 53 Hz.
* DC Resistance (Re): 5.75 Ohms.
* Coil Inductance (Le): 0.67m H.
* Mechanical Q (Qms): 8.14.
* Electromagnetic Q (Qes): 0.52.
* Total Q (Qts): 0.49.
* Compliance Equivalent Volume (Vas): 60.1 liters / 2.12 cu.ft..
* Peak Diaphragm Displacement Volume (Vd): 103.5 cc.
* Mechanical Compliance of Suspension (Cms): 0.36 mm/N.
* BL Product (BL): 9.6 T-M.
* Diaphragm Mass Inc. Airload (MMs): 25 grams.
* Efficiency Bandwidth Product (EBP): 102.
* Maximum Linear Excursion (Xmax): 3 mm.
* Surface Area of Cone (Sd): 344.9 cm2.
* Maximum Mechanical Limit (Xlim): 8.6 mm.
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Recommended Enclosure Volume;
* Sealed: 8.5-14.2 liters / 0.3-0.5 cu.ft..
* Vented: 19.8-70.8 liters / 0.7-2.5 cu.ft..
* Driver Volume Displaced: 0.04 cu.ft. / 1.13 liters.
* Overall Diameter: 10.11-in , 256.8 mm.
* Baffle Hole Diameter: 9.13-in , 231.9 mm.
* Front Sealing Gasket: Yes.
* Rear Sealing Gasket: Yes.
* Mounting Holes Diameter: 0.23-in , 5.8mm.
* Mounting Holes B.C.D.: 9.6-in , 243.8mm.
* Depth: 3.98-in , 101.1 mm.
* Net Weight: 6.8 lbs, 3.08 kg.
* Shipping Weight: 7.8 lbs, 3.54 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.