The CPH-3 is a horn loaded enclosure featuring a 15” low, a 12” mid-low and a 2” HF driver in a compact enclosure. The permanent install version uses ½” birch plywood and the portable version is constructed out of ¾” material. Our horns are unique in the industry, being made out of different densities of polyurethane material in a wood shell. Because of this uniquely solid construction, up to 6” thick the horns remain the same acoustically at all sound pressure levels. This means they sound the same at lower volume levels that they do at high volume levels. They don’t lose any sound quality. The CPH-3 is one of the finest horn loaded products you will ever hear.