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. Cielo Surround Sound Series dual voice coil, in-wall subwoofer (SP-8CLSW) offers a deep, rich bass experience without sacrificing floor space in your 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.