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Proposed schematic




Here's how I plan to hook it up in order to make sure I don't damage the tube amp. One switch for left and another for right, but only one shown here. The non active amp is presented with a big power reaistor to keep things safe. I know myself and I will cook the amplifier before realizing the speaker selector is in the wrong position!

Beneath the proposed schematic is how I plan to check the contact resistance of the switch. It's a 15A model, but made in China isn't a wonderful pedigree.

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