This ceiling speaker was designed to provide optimum performance for voice in addition to audio from other sources (CD/MP3 player, VCR, etc.). Each speaker features a sealed-back enclosure and 6.5" polypropylene midrange/woofer to produce natural bass response, while the coaxially-mounted 1" polycarbonate tweeter provides superior high frequency response. Easily flush-mounted in any drop-ceiling, four of these speakers provide smooth, evenly distributed sound throughout the classroom. All students can enjoy enhanced audio equally. Priced each. Designed to handle up to 50 Watts (continuous program) each.