06-08-2011, 12:28 AM
I did a similar thing to my Mom's old Philco, but this was a dptt that allowed regular reception and sharing of audio signal or two way intercom with the boy's room room upstairs, me being one of the boys. All's it took was a length of wire, another speaker, and an extra audio transformer, and of course the switch. My god, that was about 50 years ago!.