DESC: Speco Technologies' high-end, Ciela Surround™ Sound Audio Line offers harmonized engineering where each speaker in the system was developed to provide the ultimate listening experience. Our in-ceiling speakers feature pivoting silk dome tweeters that focus the high frequencies to your customized listening area. The injection-designed woofer with rubber surround deliver powerful, rich low frequency response with minimal distortion.The Ciela Surround™ Sound Series with its sonic performance and flat frequency response curves will offer crystal clear sound and reliable home theater enjoyment for years to come.