As I expected, he cabinets have never been opened. I looked inside - could not resist... - and took some pictures. The x-over seems to be in a perfect shape, no need to upgrade I suppose. The two drivers are original, but there are aftermarket / new subs available at simplyspeakers.com (HF drivers) and parts-express.com (LF woofers) made by Eminence in case of WOPL amp accidental overloading. What I don't like is the damping material on the back cabinet's wall. Have to think what istead...
My 'cleaning questions' of on of previous posts still without any advice
.... ?