Humming From Grounded Turntable

[ashor]

Good Evening, All

First and foremost, I would like to thank everyone for their input. I never expected so many replies. 😀

I currently have the pre-amp reconnected and have removed the grounding wire altogether. The result is a much fainter hum and I suspect it's as good as many - particularly as there are other electrical items in reasonably close proximity - so I don't think getting rid of it completely is realistic.

It's certainly much much better than it was and no way near as noticeable at the sort of volumes I use. That said, I still have some suggestions to tinker with (thanks to you lot 👍) and tinker I will, until I've exhausted them all.

I also came across this on the Fluance website, so this has gone on the list and I'll give it a go when I have another grounding wire:

Fluance Support Center

TWO grounding wires...who knew?!

I'll certainly report back if any further improvement is made but, for now, thanks again for all of your responses. With so much hate and b******* online, it's great to be reminded that there are still those who simply enjoy helping others out.

 

[good_enough]

Good Evening, All

First and foremost, I would like to thank everyone for their input. I never expected so many replies. 😀

I currently have the pre-amp reconnected and have removed the grounding wire altogether. The result is a much fainter hum and I suspect it's as good as many - particularly as there are other electrical items in reasonably close proximity - so I don't think getting rid of it completely is realistic.

It's certainly much much better than it was and no way near as noticeable at the sort of volumes I use. That said, I still have some suggestions to tinker with (thanks to you lot 👍) and tinker I will, until I've exhausted them all.

I also came across this on the Fluance website, so this has gone on the list and I'll give it a go when I have another grounding wire:

Fluance Support Center

TWO grounding wires...who knew?!

I'll certainly report back if any further improvement is made but, for now, thanks again for all of your responses. With so much hate and b******* online, it's great to be reminded that there are still those who simply enjoy helping others out.

Yup that two grounding wires is what I suggest above - get all the kit at the same potential.

 

[ashor]

Yup that two grounding wires is what I suggest above - get all the kit at the same potential.

Yes...I thought that's what you meant.
Cheers!😀

 

[good_enough]

Yes...I thought that's what you meant.
Cheers!😀

You don't need to source any special grounding wire to try - just any old flex or wire wrapped around both grounding posts and screwed down. Sandwiching the spade from the turntable at the pre end. Just anything conductive that will equalise the potential at both ends - there's next to zero current involved.

 

[ashor]

You don't need to source any special grounding wire to try - just any old flex or wire wrapped around both grounding posts and screwed down. Sandwiching the spade from the turntable at the pre end. Just anything conductive that will equalise the potential at both ends - there's next to zero current involved.

I have plenty of speaker cable, so I was going to try that.