ALPHA-15A 15" American Standard Series Speaker

Recommended for professional audio and bass guitar applications as a woofer in a vented or sealed enclosure. Applications  Woofer | Midbass | Midrange | Pro Audio | Open Baffle System | Bass Guitar Box Type: Sealed | Vented Specifications Download Spec Sheet   Download Cab Design SPECIFICATION Nominal Basket Diameter 15", 381 mm Nominal Impedance* 8 Ω Power Rating* Program Power 400 W Watts 200 W Resonance 41 Hz Usable Frequency Range 46 Hz - 3.5 kHz Sensitivity* 97 dB Magnet Weight 20 oz. Gap Height 0.25", 6.4 mm Voice Coil Diameter 1.5", 38 mm THIELE & SMALL PARAMETERS Resonant Frequency (fs) 41 Hz DC Resistance (Re) 5.88 Ω Coil Inductance (Le) 0.84m H Mechanical Q (Qms) 7.23 Electromagnetic Q (Qes) 1.53 Total Q (Qts) 1.26 Compliance Equivalent Volume (Vas) 260 liters / 9.18 cu.ft. Peak Diaphragm Displacement Volume (Vd) 325 cc Mechanical Compliance of Suspension (Cms) 0.25 mm/N BL Product (BL) 7.7 T-M Diaphragm Mass Inc. Airl