Audison Prima Apx 6.5 High End Loudspeaker 16.5 Cm / 6.5, 420 Watt 16.5 cm. / 6.5 "2 way coaxial speakers, impedance 4 ohms, Spl 94 db. , 2 x 70/210 watts rms / max., frequency response 60 23000 hz., Installation diameter 141 mm. , installation depth 57 mm. , few price!, Tweeter in the integrated membrane, thus no supernatant, fits under any original cover, High quality membrane, flat basket, large voice coil diameter