Ci200QSB-THX *PAIR* 8 Ultra Thin Bezel Wall / Ceiling SubwooferCertified to THX ULTRA2 and THX SELECT2 standards, the formidable Ci200QSb THX in wall subwoofer delivers deep bass and theatre thumping output capabilities, matched to the uncanny ability to deliver all the drama and emotional intensity of full theatre sound quality. With a powerful high output 200mm (8in.) sub bass driver, the Ci200QSb THX can be used in passive mode to supplement the LF output of KEFs Ci series in wall or in ceiling speakers. In