POLK AUDIO MM652 MM1 SERIES 6.5" COAXIAL SPEAKERS. Also found as: Polk MM1 652, Polk MM1 6.5, Polk MM1 2-Way 6.5"". Next-level Polk speakers. Series : MM1 (Polk Audio). A low-profile, lightweight carbon basket features excellent venting to keep these speakers cool when you're really pouring on the power.
eBay