On May 1, 2019 at 21:45, tweeterguy said...
I used to love ripping that rubbish out. It will be a shielded 22/4 from the room and door stations home run to the master station; if the installer followed M&S “best” practices. There will also be a 120v transformer you’ll have to deal with at the master station plus a really sweet AM and FM antenna stuffed in the wall cavity. Prepare client for retro T&M plus wall repair. Nothing is useable.
I've seen one changed out to something more conventional, but it was an ugly thing, and I'm not sure it worked so well.
It is indeed 22/4 shielded wire, and the back box at the master will have one or two drop in transformers in the can. Depends on if it has the add on CD player.
I installed 1000;s of those things in the 80's. Good for what it was at the time.
