BETA-12A 12" American Standard Series Speaker

Recommended for professional audio and bass guitar applications as a woofer in a vented enclosure. Also works well for PA in a sealed or bandpass enclosure. Applications  Woofer | Midbass | Midrange | Pro Audio | Home Stereo | Home Theater | Bass Guitar Box Type: Sealed | Vented | Horn Loading SpecificationsDownload Spec Sheet Download Cab Design SPECIFICATION Nominal Basket Diameter 12", 305 mm Nominal Impedance* 8 Ω Power Rating* Program Power 500 W Watts 250 W Resonance 47 Hz Usable Frequency Range 43 Hz - 3.8 kHz Sensitivity* 98 dB Magnet Weight 38 oz. Gap Height 0.312", 7.9 mm Voice Coil Diameter 2", 51 mm THIELE & SMALL PARAMETERS Resonant Frequency (fs) 47 Hz DC Resistance (Re) 5 Ω Coil Inductance (Le) 0.64m H Mechanical Q (Qms) 6 Electromagnetic Q (Qes) 0.5 Total Q (Qts) 0.46 Compliance Equivalent Volume (Vas) 120.1 liters / 4.24 cu.ft. Peak Diaphragm Displacement Volume (Vd) 237 cc Mechanical Compliance of Suspension (Cms) 0.29 mm/N BL Product (BL) 10.8 T-M Diaphragm Mass Inc. Airload (MMs) 40 grams Efficiency Bandwidth Product (EBP) 94 Maximum Linear Excursion (Xmax) 4.4 mm Surface Area of Cone (Sd) 538.9 cm2 Maximum Mechanical Limit (Xlim) 11 mm MOUNTING INFORMATION Recommended Enclosure Volume Sealed 25.5-35.4 liters / 0.9-1.25 cu.ft. Vented 36.8-139 liters / 1.3-4.9 cu.ft. Driver Volume Displaced 0.071 cu.ft. / 2 liters Overall Diameter 12.03", 305.6 mm Baffle Hole Diameter 11.07", 281.2 mm Front Sealing Gasket Yes Rear Sealing Gasket Yes Mounting Holes Diameter 0.25", 6.4mm Mounting Holes B.C.D. 11.59", 294.4mm Depth 5.5", 139.7 mm Net Weight 7.5 lbs, 3.4 kg Shipping Weight 9.7 lbs, 4.4 kgs MATERIALS OF CONSTRUCTION Coil Construction Copper voice coil Coil Former Polyimide former Magnet Composition Ferrite magnet Core Details Vented and 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 Frequency Response