10.5K4

The 10.5K is a 4-way in-ceiling speaker in the high-quality Kevlar Series, based on the best materials and featuring the most advanced technologies available. 

This 10" speaker is the most powerful in-ceiling speaker on the market with a maximum power handling of up to 200 Watts. It is recommended for larger rooms and rooms with high ceilings up to 17 feet/5.2 meters. The 10.5K4 delivers the richest bass possible from its 10" woofer, as well as crystal clear reproduction of high frequencies from the two silk dome tweeters provided.