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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: 08 Mar 2023 at 5:23pm
Originally posted by patientot patientot wrote:

No advice but I wish you luck in sorting this out. Problems like this can be very annoying.

Thanks. Luckily I can’t hear it when the music is playing, but I know it is there.
Kevin
European loan coordinator, based near Toulouse, France.
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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: 08 Mar 2023 at 5:32pm
For clarity, the phonostage is not one of Graham’s designs. It is a valve (MM)/hybrid design(MC uses JFETs to amplify the signal, AFAIK). It was a another “lockdown” project I built to keep me sane. It is equipped with a Schaffner medical grade filter in the IEC socket.

I am in the lucky position of having several well designed phonostages “available” to swap in to see if it is the phonostage.


Edited by CageyH - 08 Mar 2023 at 5:33pm
Kevin
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fatmangolf Quote  Post ReplyReply Direct Link To This Post Posted: 08 Mar 2023 at 7:05pm
I am hoping CageySat helps.
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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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: 08 Mar 2023 at 7:10pm
It didn’t, so I need to move further up the chain.
Kevin
European loan coordinator, based near Toulouse, France.
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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: 08 Mar 2023 at 7:12pm
I may try a pair of Lautus. The ferrites may be just the job.
Kevin
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fatmangolf Quote  Post ReplyReply Direct Link To This Post Posted: 08 Mar 2023 at 7:13pm
Fingers crossed for you Kevin.
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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lfc jon View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote lfc jon Quote  Post ReplyReply Direct Link To This Post Posted: 08 Mar 2023 at 8:53pm
Same here.
Reflex M, Solo (both with PSU-1) CuSat50, Lautus, Spatia & Spatia links cables. Ortofon Bronze.
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