DELTA-12A 12" American Standard Series Speaker

Recommended for professional audio as a mid-bass or woofer (with high-pass filter) in vented enclosures. Applications  Woofer | Midbass | Midrange | Pro Audio Box Type: Vented SpecificationsDownload Spec Sheet Download Cab Design SPECIFICATION Nominal Basket Diameter 12", 305 mm Nominal Impedance* 8 Ω Power Rating* Program Power 800 W Watts 400 W Resonance 55 Hz Usable Frequency Range 54 Hz - 5 kHz Sensitivity* 98.3 dB Magnet Weight 56 oz. Gap Height 0.375", 9.5 mm Voice Coil Diameter 2.5", 64 mm THIELE & SMALL PARAMETERS Resonant Frequency (fs) 55 Hz DC Resistance (Re) 6.3 Ω Coil Inductance (Le) 0.74m H Mechanical Q (Qms) 5.27 Electromagnetic Q (Qes) 0.46 Total Q (Qts) 0.43 Compliance Equivalent Volume (Vas) 81.3 liters / 2.87 cu.ft. Peak Diaphragm Displacement Volume (Vd) 125 cc Mechanical Compliance of Suspension (Cms) 0.21 mm/N BL Product (BL) 13.5 T-M Diaphragm Mass Inc. Airload (MMs) 39 grams Efficiency Bandwidth Product (EBP) 120 Maximum Linear Excursion (Xmax) 2.4 mm Surface Area of Cone (Sd) 519.5 cm2 Maximum Mechanical Limit (Xlim) 9.9 mm MOUNTING INFORMATION Recommended Enclosure Volume Sealed N/a Vented 25.5-85 liters / 0.9-3 cu.ft. Driver Volume Displaced 0.079 cu.ft. / 2.25 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 5.35", 135.9 mm Net Weight 11.4 lbs, 5.17 kg Shipping Weight 13.5 lbs, 6.12 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 felt dust cap Frequency Response