Martin Audio Differential Directivity System combines line array and differential dispersion technologies to provide an advanced solution to the requirement of even coverage over wide angles and medium throw distances. Short throw horizontal dispersion is 120˚, narrowing to 100˚ as throw increases. The vertical differential directivity, VDQ, creates progressively more HF output as the throw distance increases. The resultant dispersion pattern is ideally suited to covering audiences located on flat or gradually sloping surfaces. When additional low end is required the W8VDQ may be pole mounted above a WS18X subwoofer to form a compact, high performance system. If extremes of sub-bass are needed then the W8VDQ proves more than a match for the legendary WS218X. Martin Audio Differential Directivity Systems – the compact solution.