Yes, you are correct, here is a MA5100 Owners Manual.
The top 2 screws and bottom 2 screws on each terminal are not any type of connection. They secure the terminal to the chassis.
Mcintosh MA5100 speaker connection
Finally got a Mac, the MA5100. Im not familiar with the vintage gear, so my question is; the rear panel speaker terminals have 8 screws for each channel. from what I understand, the two center, and inside screws are used for stereo connections, the top being +, and lower being common (-). Am I correct in my assumption?
left X X Right X X
X + + X
X - - X
X X X X
left X X Right X X
X + + X
X - - X
X X X X
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