LCT 81C/T is a full-range ceiling speaker designed to lay into suspended grid ceiling, with no cutting of ceiling tiles required, making for an easy and cost-effective installation with a minimum of mess. The low profile depth allows the speaker to fit in locations where deeper loudspeakers do not. This loudspeaker is designed to provide excellent performance for paging and light-to-medium music in a wide variety of applications, including education classrooms, business music systems, retail stores, music/paging systems, airports, reception/waiting rooms, lounges, courtrooms, meeting rooms, and more. The very high sensitivity provides maximum sound level, even at low tap settings. LCT 81C/T contains a dual-cone driver with a very high sensitivity. The driver features a voice coil with a Kapton coil-former and high-temperature wire for better power dissipation and long-term reliability. Adjusting is convenient via a rotary switch on the side of the rear enclosure.