FSB216 V2 2-Pack + FKB169 2-Pack

This bundle pairs the MB Quart Formula Series FSB216 6.5 inch component speakers with the FKB169 6x9 coaxial speakers for a front stage and rear deck upgrade in one order. The FSB216 pair handles 280 W peak (140 W RMS per pair) through a separate tweeter and external passive Butterworth crossover, so the tweeter can be angled toward the listener instead of staying fixed to the woofer. The FKB169 pair steps up rear output to 300 W peak (150 W RMS per pair) in the larger 6x9 format most trucks and sedans use for a rear deck. Both pairs share aluminum dome tweeters, polypropylene cones, and butyl rubber surrounds, keeping tone consistent between the front stage and the back of the cabin. Copper voice coils on Kapton formers manage heat under sustained power, and heavy gauge steel frames with ferrite motors keep both speaker sizes rigid. The FSB216 fits a 5.59 inch cutout while the FKB169 fits an 8.64 x 5.98 inch cutout, covering the two most common speaker sizes in factory door panels and rear decks.