I found this panel behind a hidden door in a 1955 home. What would these plugs be for?
this appears to be the main panel
there are various similar outlets throughout the house, but usually only a single one next to a power outlet
I’ve searched coaxial plug ins, but got nowhere.
Some of the people opinions on it:
Possibly from some sort of very early multiroom audio setup? Audio source plugs in to the appropriate way in this patch box via a flying lead, and then you connect your headphones or an amplifier & speaker in whichever room you want to listen. This is a total guess by the way!
Patch Bay for audio
Telephone switch box? Like a smaller version of the ones you saw in large buildings where the building operator would answer the phone then forward it to the correct person.
Oh to be in the 60’s again playing rock and roll all throughout the house
This was probably the connection point for a home intercom system.