I have recently been scrounging around in my fathers old posetions, and came across these two B&O products from about 30 years back. Got them out and hooked them up then realised i had no input for them. Since i know the speakers will be of a very high quality i wondered is there a way to hook up...

I own a pair of these great units and i would like to refurbish them,with a twist. is there a current production seas driver replacement that can match or surpass my 1977 units? I do not understand crossovers and such and i would like the replacements to compliment the stock set up. I was eyeballing...