Ceiling Series Speakers from Proficient Audio

The BB-C650 is a back box, designed specifically to enhance the speaker's performance. It utilizes the ideal air volume for the speaker, and acts as a sound chamber, directing the critical sound to the sweet spot. It also reduces the sound going to other rooms/floors up to 10db, and provides one hour fire break protection. For use with the C660, C650; C640, C620 and C600TT ceiling series speakers. Ask us more if you want to know more.