Bosch LC4-UC06E Indoor Ceiling Mountable Speaker - 6 W RMS - Black, White - 9 W (PMPO) Woofer Tweeter Midrange - 65 Hz to 20 kHz - 1.7 Kilo Ohm

The LC4 Ceiling Loudspeaker Range can be used for a wide variety of ceiling environments. They provide excellent speech and music in indoor public address applications. New CosCone driver technology, used in this range, stands for delivering outstanding sound quality from a small sized unit. It ensures a wide and equal spread of all octave frequencies and eliminates high-frequency beaming. Fewer loudspeakers are needed to cover a given area, and the noticeable "fading" that can occur as a listener walks from one
loudspeaker to another area is eliminated.