KAS-2

About the KAS-2

The PBN Audio LLC KAS-2 (originally sold under the Montana brand) is a flagship-scale, four-way floorstanding loudspeaker with self-powered low bass. It uses four 13-inch sub-bass drivers—two per loudspeaker—powered by a 1,000 W internal amplifier in each cabinet (2,000 W total per stereo pair), plus dedicated 9-inch mid-woofers, 5-inch midrange units, and a 1.125-inch dome tweeter. The cited Montana KAS2 documentation identifies an active bass section with adjustable bass extension/level control, a fixed 10 Hz subsonic filter, and a 55 Hz active crossover. This is an earlier KAS model, superseded in PBN Audio’s current range by the KAS III; it is therefore no longer manufactured as the KAS-2. Some published weight references conflict: an archived specification lists 330 lb / 150 kg net, while a dealer description states 300 kg for a pair; the former is treated as the per-speaker net specification because it appears in the detailed spec table.