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LCT 81C/T is a full-range ceiling speaker designed to lay into a 2 ft x 2 ft US-style 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 of only 100 mm 4 in 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 of 96 dB provides maximum sound level even at low tap settings. LCT 81C/T contains a 200 mm 8 in dual-cone driver with a very high 96 dB sensitivity. The driver features a 25 mm 1 in diameter voice coil with a Kapton coil-former and high-temperature wire for better power dissipation and long-term reliability. The speaker’s built-in 10 Watt transformer provides versatility by allowing use on 100V or 70V distributed loudspeaker lines as well as at 8 ohms low impedance for driving directly from a low impedance power amplifier. Adjusting is convenient via a rotary switch on the side of the rear enclosure. Two safety seismic attachment tabs are provided for securing to ceiling deck plus 4 holes are provided — one in each corner. The color of the perforated grille is white.