MM6501 component system features 6-3/4" woofers with honeycomb-textured woven glass fiber composite cones that respond quickly for a clean & powerful sound.
MM6501UM features 6-3/4" woofers with honeycomb-textured woven glass fiber composite cones that resist & suppress resonances & very quickly for a crisp & power
MM691 6"x9" speakers feature honeycomb-textured woven glass fiber composite woofer cones that respond very quickly for a clean, crisp and powerful sound.
Highest possible resolution definition with superb dynamic range and pulse response ensures sound reproduction of complex audio passages even at extreme volume.