If you can get a pr. for $250, don't hesitate and buy them. They retailed for around $1500 I believe in their day. I owned this spk. and I liked them very much. (Driven by NAD seperates and Vintage Kenwood KA-7100.) I wish I never sold them. They did have different length tubes/and a cap for the rear port. They'll sounded much better than your BA's IMO.