Thank you for the quick replies. None of that is very good news. I might (with some cringing) suggest trying to fish all the wiring down into another wall and just move everything they have now and run away fast. Buying another older system is really not possible. Would it be possible to just hack off the connectors and put some new ones on and run

My parents have a Beocenter 7700 that was professionally installed in the 80's with a vast number of speakers which are hardwired and inset into the walls and ceilings in various rooms. As you might expect, the time has come to make a few changes, and I'm trying to help them figure out what to do. They wanted to keep the Beocenter so they can