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If I will use a toroidal transformer 1:1 (115-115V) and the amp out is 69V, I will have also 69V at the transformer out. Not 100V that I need. It will work as isolation transformer right?


About the smaller tranformers, if the incoming 100V lines are 2 or 4, and the amp out is 1200/4ohm, can I use 2 x 600W/4ohm to 100V or 4x300W/4ohm to 100V transformers connected in parallel??


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