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Occasional hum

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CageyH View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote CageyH Quote  Post ReplyReply Direct Link To This Post Posted: 15 Mar 2023 at 8:42pm
Possibly the same as a “double conversion” inverter, but with a grossly inflated price tag.

Edited by CageyH - 15 Mar 2023 at 8:42pm
Kevin
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CageyH View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote CageyH Quote  Post ReplyReply Direct Link To This Post Posted: 16 Mar 2023 at 7:40pm
The filtered IEC inlets arrived today. So I took my extension block apart only to find that I could not fit the IEC inlet, as there is a metal shield running down the middle of the enclosure.

So I put it back together, making sure all of the screws for the cables were tight. I then plugged everything back in, but in a different order (against the manufacturers recommendations). I also reorientated the mains block in an attempt to dress my cables.

I have yet to hear the buzz tonight. I don’t want to tempt fate just yet…
Kevin
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fatmangolf Quote  Post ReplyReply Direct Link To This Post Posted: 16 Mar 2023 at 8:23pm
I hope it stays that way. 🤞
Jon

Open mind and ears whilst owning GSP Genera, Accession M, Accession MC, Elevator EXP, Solo ULDE, Proprius amps, Cusat50 cables, Lautus digital cable, Spatia cables and links, and a Majestic DAC.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote CageyH Quote  Post ReplyReply Direct Link To This Post Posted: 17 Mar 2023 at 10:52pm
I tempted fate....

Kevin
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Post Options Post Options   Thanks (0) Thanks(0)   Quote CageyH Quote  Post ReplyReply Direct Link To This Post Posted: 18 Mar 2023 at 7:57am
Would an isolation transformer be a suitable device to cut down the noise?
Kevin
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CageyH View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote CageyH Quote  Post ReplyReply Direct Link To This Post Posted: 19 Mar 2023 at 1:07pm
I have a temporary fix, as what ever is causing the noise is not something I can turn off.
So my system is plugged in to the mains, with the exception of the phono stage.
The system is now silent, but I want to get rid of the AG1500 power regenerator, as I know this is throwing noise back into the mains.
Kevin
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Post Options Post Options   Thanks (0) Thanks(0)   Quote CageyH Quote  Post ReplyReply Direct Link To This Post Posted: 21 Mar 2023 at 12:08pm
Can a ground loop be intermittent?
Every time I think I have fixed the issue after a few hours of silence, it comes back.

It does sound a bit like a ground loop hum, that lasts for maybe one to two seconds.
Kevin
European loan coordinator, based near Toulouse, France.
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