Biamp Desono COLS101 2-way White Wired 30 W195 22000 Hz, 120 x 10, 10x 2", 1x 1", 721 x 66 x 66 mm, White COLS101 is an extra slim column speaker that is especially suitable for sound reproduction in acoustically difficult venues. Advanced technology guarantees optimized sound dispersion and improved speech intelligibility. This decreases microphone feedback in reverberant locations such as houses of worship, sport facilities, public buildings as well as conference facilities and auditoriums.