linuxworks
Member of the Trade: Sercona Audio
- Joined
- Oct 10, 2008
- Posts
- 3,456
- Likes
- 69
Quote:
sometimes, proximity has a strange way of causing problems.
it sounds counter-intuitive, but I've seen it happen. move wires around and watch the spectrum (or listen for hum). I keep saying 'wire routing MATTERS' and I'm not at all kidding.
I went thru at least 3 b22 layouts (on wood mdf) before getting one that was hum free. and the trafo was on the floor the whole time, via a long wire away from things.
I'm not kidding. I can't fully explain it but I have experienced it enough to not just take things for granted. I don't run 'power' near 'signal' and especially if its an input to an amp. even in car audio, they teach the same basic idea (run power down one side of the car and audio runs down the other).
Originally Posted by Fitz /img/forum/go_quote.gif Wait, are you suggesting the Sigma22 has a significant amount of AC on its output, enough to even be picked up on the wiring before the volume pot? |
sometimes, proximity has a strange way of causing problems.
it sounds counter-intuitive, but I've seen it happen. move wires around and watch the spectrum (or listen for hum). I keep saying 'wire routing MATTERS' and I'm not at all kidding.
I went thru at least 3 b22 layouts (on wood mdf) before getting one that was hum free. and the trafo was on the floor the whole time, via a long wire away from things.
I'm not kidding. I can't fully explain it but I have experienced it enough to not just take things for granted. I don't run 'power' near 'signal' and especially if its an input to an amp. even in car audio, they teach the same basic idea (run power down one side of the car and audio runs down the other).