Black nonpressed paper cone ; Specially treated foam-edge suspension; Stamped steel basket with hex-key input terminal; Bumped vented motor structure; Custom-designed rubber magnet boot; Imp: dual 4ohm nominal; 15"; 2,000W max; 100oz + 100oz heavy, double-stacked magnet structure ; 2.5" dual layer high-temperature Kapton(R) voice coil ; SPL: 89dB; Mounting depth: 7.64";