EMINENCE BETA8CX 8-Inch American Standard Series Speakers

Power Rating Watts 250W Music Program 500W Resonance 63Hz Usable Frequency Range 74Hz-20kHz Sensitivity 93.3 Magnet Weight 38 ounce Gap Height 0.313", 7.94mm Voice Coil Diameter 2", 50.8mm THIELE and SMALL PARAMETERS Resonant Frequency (FS) 65.52Hz DC Resistance (Re) 5.6 Coil Inductance (Le) 0.85mH Mechanical Q (QMS) 8.82 Electromagnetic Q (QES) 0.34 Total Q (QTS) 0.33 Compliance Equivalent Volume (Vas) 19.99 liters / .71 cu.ft. Peak Diaphragm Displacement Volume (VD) 67.20cc Mechanical Compliance of Suspension (CMS) 0.32mm/N BL Product (BL) 11.1 T-M Diaphragm Mass Inc. Air load (Mms) 18.3 grams Efficiency Bandwidth Product (EBP) 193.1 Maximum Linear Excursion (XMAX) 3.2mm Surface Area of Cone (SD) 210.0 cm2 Maximum Mechanical Limit (XLIM) 6.9mm MOUNTING INFORMATION Recommended Enclosure Sealed 3-10 liters/ 0.1-0.4 cu.ft. Vented 8-21 liters/0.3-0.8 cu.ft. Overall Diameter 8.24", 209.3mm Baffle Hole Diameter 7.13", 181.1mm Front Sealing Gasket fitted as standard Rear Sealing Gasket fitted as standard Mounting Holes Diameter 0.22", 5.6mm Mounting Holes B.C. D. 7.75", 196.9mm Depth 3.5", 88.9mm Net Weight 6.8 lbs., 3.1 kg Shipping Weight 7.5 lbs., 3.4 kg MATERIALS OF CONSTRUCTION Coil Construction Copper voice coil Former Kapton former Magnet Composition Ferrite magnet Core Details Tapered Coax Basket Materials Pressed steel basket Cone Composition Treated Paper Cone Edge Composition Sealed Cloth cone edge Dust cap Composition Zurette dust cap