I bought a house built in 2000. I has wall built-in speakers, two in family room and 2 in game room. Both rooms have a jack panel, mounted in wall. They have rotating cups on them. I tried to put the 3.5 mm audio pin to it, but the pin is small. Any idea what kinda cable would work with them
Most likely, there are holes in the side of the shaft. Put the wires through the holes and tighten down the ring to hold it in place.
Those are connections for speakers.
They are not amplified. To use a normal headphone signal (3.5 mm) with them, you will need an amplifier between your device and the wall connections.
Basically, you'd have two two-conductor wires going to the binding posts. The wires can connect 2 different ways:
- They can simply stripped of insulation at the end, inserted through the hole on the side of the post, and the nut would then be tightened down holding the wire in place.
- Alternatively, you could terminate the wires with banana plugs, which would then insert into the holes in the end of the posts.
These are binding posts
These are binding-post connections -- you can connect stripped wire ends to them by screwing the stripped end down under the turning (nut) portion of the binding post, or use standard (4mm) banana plugs on the ends of your speaker leads that then plug into the socket in the middle of the binding post.