MB Quart strives to push the boundary in perfecting sound from speakers. The top of the line, Premium Series speakers truly makes Music-Defined. This pair of audiophile Premium Series 5 x 7 In./6 x 8 In. 2 Way Coaxial Speakers is loaded with 1 in. magnesium tweeters that deliver exceptional musical reproduction of high frequencies. The series' WideSphere technology has a removable phase lens to create a larger-than-life soundstage. And the Curvilinear Cones provide strength and superior bass frequency reproduction. The Premium Series will offer you levels of clarity, coupled with rich quality sound, creating superior audio for all of your playlists that simply demand the best.