OMNITRONIC PS-20 is a weather-proof passive projector speaker for 100 V public address systems and permanent installation. It features a durable aluminum cabinet with grille, a mounting bracket, and IP44 protection for outdoor use. The speaker contains one 6.5-inch full-range loudspeaker and provides 20 W RMS rated power with switchable 5 W, 10 W, or 20 W RMS power tapping. Its frequency range is 110–15,000 Hz and maximum SPL is 108 dB.