The 15° trapezoidal cabinet allows for extreme downward angles at the bottom of an array for front row coverage, as well as wide vertical coverage arrays such as multiple-balcony venues.
It's a 3-way cabinet with two Adamson 8.5" Kevlar, neodymium drivers - one ND8-L mid-bass driver and one ND8-M mid-range driver - and a 1.5" compression driver mounted on the wave shaping chamber. This produces a slightly curved isophasic wave front, with a coverage pattern of 15° vertical by 120° horizontal.