Ground loop with Miyajima Premium mono


Hi to all,
this is the trouble:a annoying hum from speakers when
the Miyajima mono cartridge play.Aesthetix Rhea phono stage.
This resolved only desconnecting a channel from the cartridge
and selecting mono function from line pre.
Does someone know how this problem can be resolved?
Thank you in advance.
somaxx

Showing 4 responses by somaxx

Hi to all,
I have resolved the question with a Lyra Helikon Mono
cartridge.No hum. I think the problem is the Rhea,
on masses configuration.The doubled coils allow to function
without troubles respect a single coil.Also in agreement with what was said in the Lyra website.
Thank you to all for the debate.
One thing is interesting: the same cartridge work fine
throught a EAR 88PB phono stage,without hum problem in
stereo connections.Different construction on phono stages?
Perhaps dual mono or balanced inputs are implicate?
It's wonderful listen fifties and sixties mono jazz LPs!
I have hundreds,so for me is fundamental a mono cartridge.
It's very smart what says Mikelavigne on splitting and suming
interconnect,but it's possible only with a dedicated tonearm and/
or turntable, I think.i have a second tt,a Goldmund Studietto,
but I'm very curious on this question,but it would be beautiful to be able to resolve the thing without working with interconnects cables.
I have tested a Torlai mono cartridge with single coil too.
Mr. Roberto Torlai is a Italian cartridge maker.
Same hum from speakers and the same answer that has given Mikelavigne on as to resolve the problem.Mr. Lukaschek,Benz Micro chief,says that the problem is greater with low output mono
cartridges.Dynavector and Lyra monos has double coils to avoid
loop (this is written on respective websites).
Matter more intriguing for me.