Mb FKB146 (r) Formula Series 2-way Coaxial Speakers (4 X 6)

? WIDESHERE(TM) creates a large sweet spot for all listeners, even from the smallest speakers ;? Aluminum dome tweeters deliver high output, extended frequency response & natural music reproduction;? Butyl rubber surrounds provide durability & deeper mid-bass impact;? Textured ABS gasket assures a rigid linear seal to the mounting surface;? Pure copper voice coil creates a strong magnetic field with a very thin extrusion;? Kapton voice coil former is lightweight & efficiently dissipates heat;? Natural fiber allows flexibility while the infused epoxy gives strength during the manufacturing process;? Over-coil cooling system allows air exchange over the voice coil through the spider;? Heavy gauge progressive-die stamped steel frames for ultimate rigidity;? 4 x 6;? 90W max/45W RMS;? Freq resp: 55Hz-20kHz;? Mounting dia: 5.5 x 3.46;? Outside dia: 5.94 x 3.84;? Mounting depth: 3;? Pair;