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?Hi everybody,

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A year ago I bought a Hammond M series. Its one of the first series of it, made in the USA.?Here is how I found out.?When I played it, it seemed to me that the pitch was not correct. Now I realize that in those days the Americans used 60 Hz polartity switching, and not?50 Hz, as we do here in Belgium.?Result: the organ's pitch is lower than it should be. ??

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Any?help or advice to?tune my M would be appreciated!

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