The ingenious, flow optimized, reflex port achieves clear deep bass articulation with no compression or port noises. Combined with the advanced Genelec Directivity Control Waveguide? (DCW?) and the rounded edges and gently curved front and sides of the MDE? (Minimum Diffraction Enclosure?) enclosure, the result is an astoundingly wide, flat frequency response both on and off axis. Other benefits include superb imaging qualities and less listening fatigue.