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DIY For Audio
Phono Stage - Transformer interference
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<blockquote data-quote="Steerpike" data-source="post: 89757" data-attributes="member: 807"><p>This suggests magnetic induction, and not an earth loop.</p><p></p><p>With such short leads on the phono pre amp board, it must be close to the main pre-amp, so it may pick up hum from the transformer in that too.</p><p></p><p>MC inputs without screened cable - I don't like that - unless you have a true balanced input.</p></blockquote><p></p>
[QUOTE="Steerpike, post: 89757, member: 807"] This suggests magnetic induction, and not an earth loop. With such short leads on the phono pre amp board, it must be close to the main pre-amp, so it may pick up hum from the transformer in that too. MC inputs without screened cable - I don't like that - unless you have a true balanced input. [/QUOTE]
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DIY & Tutorials
DIY For Audio
Phono Stage - Transformer interference
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