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Integrated amp, best conversion 220 to 110 volts?

Greetings all. I have a Marantz integrated amp from Europe that utilizes 220 volts and want to convert it to operate on American 110. What's the best way to go about this?
Replace the internal toroid or add an external step-up? If the former, where can I obtain a superior, audio-grade (perhaps oxygen free copper)transformer?
pmboyd
pmboyd OP
391 posts
 
Thanks for the tip, Lewinskih01. There aren't any extra wires coming off the torroid, however -- all wires are being utilized. This suggests to me that I need to replace the transformer.
cford
66 posts
 
Just because all of the wires are used, doesn't mean it isn't convertable. A transformer designed for both 110 and 220V operation will have 2 primary windings. When wired for 220, the 2 primaries are in series and when used for 110, they are in parallel.
pmboyd OP
391 posts
 
Aha. OK, thanks, I'll take it to an audio tech to check it out!
pmboyd OP
391 posts
 
Audio tech says the torroid is custom made and there aren't two primary windings so I have to either replace it or use a step-up xformer. Suggestions?
tpreaves's avatar
tpreaves
2,682 posts
 
That was fast !!!!
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