AtlasIED AP-15T 15W Horn SpeakerThe AtlasIED AP 15T is a double re entrant speaker which delivers 15W of continuous power handling, superior intelligibility, and unparalleled efficiency. The AP 15 Series operates within a nominal frequency response range of 400 14,000 Hz and offers a sensitivity of 120dB at rated power to provide clear voice and signal communication. The trademarked squared bell design signifies AtlasIED quality and reliability. The Omni Purpose mounting bracket