Switching a power transformer from 220v to 117v A.C.

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I have an amp to play with that is obviously set up for 220v, because the DC voltages are all at 50% of what they should be. The inner red and white primary leads are connected and the outer red and white leads are connected via fuse and power switch to the power cord.
I assume that this puts the primary windings in series for 220V, and logic says paralleling with the two red leads to hot and and two white leads to neutral would be the configuration for 117v.
Since I don't have any literature for the transformer, and I don't want to wait to play with this toy, can anyone confirm my logic?
Dave van Harn

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Topic - Switching a power transformer from 220v to 117v A.C. - Dave VH 15:44:33 05/28/00 (1)

Thanks, but I just answered my own question!! - Dave VH 15:58:32 05/28/00 (0)

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