15MB700 15" VERY HIGH OUTPUT MIDBASS EIGHTEEN SOUND 15MB700 IS A VERY HIGH OUTPUT MIDBASS 15" SPEAKER HANDLES 400 WATTS AES & 800 WATTS PROGRAM FEATURES VERY HIGH EFFICIENCY OF 103dB SPL, A 3" SANDWICH VOICE COIL & A HIGH XMAX OF 5.5MM WIDE FREQUENCY RANGE FROM 45HZ TO 4.3KHZ VERY LOUD & CLEAN SOUNDING BASS & MIDS FOR USE IN PROFESSIONAL HIGH OUTPUT BASS & MIDBASS SYSTEMS VERY HIGH EFFICIENCY OF 103DB SPL W/ 800 WATTS POWER HANDLING! 15MB700 Item Price: $245.95 WOOFER MODEL 15MB700 Specifications Diameter 15" / 380mm Impedance 8 ohms AES Power Rating 400 Watts Program Power  800 Watts Sensitivity (1W/1m) 103dB SPL Frequency Response 45Hz - 4.3kHz Recommended Crossover 3.0kHz Voice Coil Diameter 3" / 75mm BL Factor 17.6 TM Recommended Enclosure Volume 2.65-4.6 cu. ft / 75-130Liters Magnet Ferrite Mounting Information Overall Diameter 15.23" / 387mm Bolt Circle Diameter 14.55" / 370mm Baffle Cutout Diameter 13.9" / 353mm Overall Depth 6.59" / 167.5mm Flange Thickness .76" / 19.5mm Net Weight 18.3 lbs. / 8.3 kg. Shipping Weight 20.75 lbs. / 9.4 kg. Thiele-Small Parameters Resonant Frequency (fs) 42 Hz Impedance (Re) 5.0 ohms Coil Inductance (Le) 1.2mH Mechanical Q (Qms) 4.5 Electrical Factor(Qes) .31 Total Q (Qts) .29 Comp. Equivelant Vol. (Vas) 7.14 ft3 / 202 Liters Voice Coil Overhang (Xmax) 5.5mm Surface Area of Cone (Sd)m2 0.085m2 Frequency response in 125 Liter enclosure tuned to 50Hz