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Vintage threads from the first ten years

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previous: Peter Michaux Re: Polarity Switches in 50W Heads/ AC POLARITY?? -- 6/12/2000 4:38 AM View Thread

Back to the Marshall question...

6/12/2000 6:26 PM
Tim Swartz
Back to the Marshall question...
It seems like US export Marshalls must have gotten the polarity switch about the same time they got the upright mains...('68?). the upright mains was a UL requirement...polarity switch could be too??? US amps kept them until they went to rocker style switches in about '75.  
 
Tim