EMINENCE 12"PRO LOUD SPKR,900W/8OHMS

This table charts the specifications for the KAPPA-12A speaker * Nominal Basket Diameter: 12-in , 305 mm. * Nominal Impedance: 8 Ohms. * Power Rating: * Watts: 450 W. * Music Program: 900 W. * Resonance: 45 Hz. * Usable Frequency Range: 62 Hz - 4.2 kHz. * Sensitivity: 99.3 dB. * Magnet Weight: 80 oz.. * Gap Height: 0.375-in , 9.5 mm. * Voice Coil Diameter: 3-in , 76 mm. * Thiele & Small Parameters. * Resonant Frequency (fs): 45 Hz. * DC Resistance (Re): 5.41 Ohms. * Coil Inductance (Le): 0.77m H. * Mechanical Q (Qms): 7.76. * Electromagnetic Q (Qes): 0.28. * Total Q (Qts): 0.27. * Compliance Equivalent Volume (Vas): 112.1 liters / 3.96 cu.ft.. * Peak Diaphragm Displacement Volume (Vd): 166 cc. * Mechanical Compliance of Suspension (Cms): 0.3 mm/N. * BL Product (BL): 15.2 T-M. * Diaphragm Mass Inc. Airload (MMs): 42 grams. * Efficiency Bandwidth Product (EBP): 161. * Maximum Linear Excursion (Xmax): 3.2 mm. * Surface Area of Cone (Sd): 519.5 cm2. * Maximum Mechanical Limit (Xlim): 11.5 mm. ----------------------------------- Recommended Enclosure Volume; * Sealed: N/a. * Vented: 34-62 liters / 1.2-2.2 cu.ft.. * Driver Volume Displaced: 0.09 cu.ft. / 2.55 liters. * Overall Diameter: 12.26-in , 311.4 mm. * Baffle Hole Diameter: 11-in , 279.4 mm. * Front Sealing Gasket: Yes. * Rear Sealing Gasket: Yes. * Mounting Holes Diameter: 0.25-in , 6.4mm. * Mounting Holes B.C.D.: 11.71-in , 297.4mm. * Depth: 5.63-in , 143 mm. * Net Weight: 14.9 lbs, 6.76 kg. * Shipping Weight: 17.9 lbs, 8.12 kgs. * Materials of Construction. * Coil Construction: Aluminum voice coil. * Coil Former: Polyimide former. * Magnet Composition: Ferrite magnet. * Core Details: Vented core. -----------------------------------. * Basket Materials: Pressed steel basket. * Cone Composition: Paper cone. * Cone Edge Composition: Cloth cone edge. * Dust Cap Composition: Solid composition paper dust cap.