Brand NEW! PRV Audio 8MB450 8" Midbass Woofer 8 Ohm PRV Audio's 8MB450 8" midbass woofer offers high output punch, a smooth midrange, and response up to 7,000 Hz. The 8MB450 is designed for use as a midbass or midrange driver in 3-way speakers. Alternatively, you can use this speaker in small sealed cabinets as a woofer in floor and studio monitors. A thick, light, and rigid paper cone is mated to a 2" voice coil for great sensitivity and high power handling. A durable spider suspension, woven cloth surround, and stamped steel frame are combined for extreme durability. High output SPL car audio enthusiasts gravitate towards this driver for use in their systems when looking for a midrange or midbass that can sustain long hours of extreme operation. Product Specifications Nominal Diameter 8" Power Handling (RMS)225 Watts Power Handling (max)450 Watts Impedance 8 ohms Frequency Response 70 to 7,000 Hz Sensitivity 93 dB 2.83V/1m Voice Coil Diameter 2" Thiele-Small Parameters Resonant Frequency (Fs)70.84 HzDC Resistance (Re)6.3 ohms Voice Coil Inductance (Le)0.69 mH Mechanical Q (Qms)24.67 Electromagnetic Q (Qes)1.78Total Q (Qts)1.66 Compliance Equivalent Volume (Vas)0.53 ft.Mechanical Compliance of Suspension (Cms)0.256 mm/N BL Product (BL)5.56 TmDiaphragm Mass Inc. Airload (Mms)19.7g Maximum Linear Excursion (Xmax)3.5 mm Surface Area of Cone (Sd)227 cm Materials of Construction Cone Material Paper Surround Material Cloth Voice Coil Wire Material Copper Voice Coil Former Kapton / Polyimide Basket / Frame Material Steel Magnet Material Ferrite Mounting Information Overall Outside Diameter 8.27" Baffle Cutout Diameter 7.17" Depth3.37" # Mounting Holes 4 Optimum Cabinet Size (determined using Bass Box 6 Pro High Fidelity suggestion) Sealed Volume 0.67 ft. Sealed F365 Hz Vented Volume 9.12 ft. Vented F345 Hz - Additional $20.00 charge for ECONOMY shipping service to Virgin Islands, Guam, Saipan, Northern Mariana Islands, Hawaii, Alaska or Puerto Rico areas. - All international buyers are responsible for all tax, duties and/or customs fees.