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How to devise a single-ended output from a balanced preamplfier

I guess the title of the thread says it all. I have a fully balanced tube preamplifier and I want to add a secondary unbalanced/single-ended output to drive a pair of subwoofers without compromising the balanced mode of the main outputs. I am guessing I need to interpose an isolation transformer. Yes? If so, what transformer(s) would you recommend? Since the sole purpose of the SE outputs is to drive very low frequencies, I would want an isolation transformer with good LF specs. Thanks.



Edits: 07/11/24

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Topic - How to devise a single-ended output from a balanced preamplfier - Lew 12:36:20 07/11/24 (29)

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