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Audio and Video Talk
The Vintage Audio Section
Leak, Quad, PYE, Dynaco, Radford - Transformer Iron Quality
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<blockquote data-quote="Qualityten" data-source="post: 860404" data-attributes="member: 17776"><p>Just a late comment on your final remark about Dynaco ST70 output transformers not ageing well, I very much doubt that that is correct. In fact early OPTs with the original cloth coloured leads are highly sought after. I have an ST70 from that era, and it sounds very good.</p><p></p><p>The <em>power</em> transformer of the ST70 on the other hand is under specified, and is worth updating. Mine was a 117V model, and replacing it with a 240V PT (a lucky replacement from an organ) made an audible improvement.</p></blockquote><p></p>
[QUOTE="Qualityten, post: 860404, member: 17776"] Just a late comment on your final remark about Dynaco ST70 output transformers not ageing well, I very much doubt that that is correct. In fact early OPTs with the original cloth coloured leads are highly sought after. I have an ST70 from that era, and it sounds very good. The [i]power[/i] transformer of the ST70 on the other hand is under specified, and is worth updating. Mine was a 117V model, and replacing it with a 240V PT (a lucky replacement from an organ) made an audible improvement. [/QUOTE]
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Audio and Video Talk
The Vintage Audio Section
Leak, Quad, PYE, Dynaco, Radford - Transformer Iron Quality
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