A selector that I designed to switch between tube or solid state amp to a pair of speaker.

The 3P3T rotary switch must use a shorting / make before break contact style switch like a Grayhill 44A45-03-01-03S, which can switch [email protected] or [email protected]

R1 is a dummy load which can be 25 to 50 ohm and rated 25watt or higher will be sufficient.

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