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Does anyone still have the AA articles for modifying and upgrading an ARC Sp-6A preamp? I believe these came out in the late 70s/early 80s.
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I have A-A mags from '70-'71-'74 & all from '77 thru '99. They're not for sale but I'd be glad to send you a copy of the article if you know what issue it appeared in.
Thank you.. A few people have responded, and I think I have the one I need. Samir.
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I have a SP-6A that I've modified extensively over the years. I'll root around this weekend and find the docs. I'm sure there's a copy of the article you're looking for in there. As I recall, it covers changing the pass transistors to Darlington pairs. Works great.
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