Audio Research LS2 from 110V to 220V - diyAudio
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Old 9th May 2007, 10:23 PM   #1
Sandor is offline Sandor  Italy
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Join Date: Mar 2004
Location: Milan
Default Audio Research LS2 from 110V to 220V

Hello,
I have to modify an Audio Research LS2 preamp, which accepts a 110Vac mains supply, so that It accepts a 230V power.

Does anyone know the technical specifications of the two mains transformers, so that I can substitute them?

Regards.

Paul
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Old 9th May 2007, 11:25 PM   #2
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Join Date: Apr 2004
Location: Monroe Township, NJ
Paul,

1st check for dual primary power trafos. In that happy situation, simply rewire from parallel to series.

If dual primaries are not present. Buy a "230/115" VAC autotransformer of appropriate VA rating. You'll spend LESS and get going much more quickly.
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Eli D.
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Old 11th May 2007, 05:34 PM   #3
Sandor is offline Sandor  Italy
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Join Date: Mar 2004
Location: Milan
Thank you, Eli, I'll try to apply your suggestions.

Paul
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