Genelec 8040B Bi-Amplified Monitor System (Each) Black Compact Bi-Amplified Active Monitor Directivity Control Waveguide (DCW) flow-optimized reflex port design MDE (Minimum Diffraction Enclosure) Loudspeaker Design "3/4"" (19 mm) Metal Dome Tweeter" "6.5"" (105 mm) Bass Cone Driver"