Ground connection for vinyl turntable to amplifier Solved/Closed

Question

Hello,

I connected the RCA outputs of an old vinyl turntable to a preamp, which is then connected to the auxiliary inputs of a hi-fi amplifier (no phono inputs). I can hear the sound from the turntable, but a humming noise is ruining it. It's probably due to the ground wire from the turntable. Indeed, a ground wire comes out of the turntable in addition to the 2 RCA plugs, but I don't know where to connect it (considering that neither the preamp nor the amplifier have any sockets to connect this ground).

Do you know how to solve this problem and stop the humming?

Thank you.

moi · Accepted Answer

Uh, if you have a ground on your RCA cable and it's connected to your old turntable, you can simply connect the other end to a screw on your preamp or amplifier, making sure that it makes contact with bare metal (if not, gently scrape off some paint).

s.celik · Answer

Your ground wire can be connected to the earth terminal on a standard socket, which is the small metallic terminal found in a socket, but I don't think that's it, because when you plug in your amplifier and your turntable, they are already grounded through your extension cord or other typically because it has metallic sockets. (Normally, if not, connect all the grounds to the earth, turntable + amplifier)
--
s.celik@free.fr

Marcel le bricoleur · Answer

Be careful with the internet!  I did the same manipulations on my turntable and the interference persisted, until I realized that the issue was actually with my freebox which was creating interference!  I just had to unplug and replug everything in another spot in the apartment (oh yes! when you only have 20 m2...). Made to serve.  Thanks for the info anyway!

ricoos · Answer

Thank you for your response Matwat,
same configuration as you, I also mistakenly used the ground on the power outlet, because when connecting the chassis of the preamp to the ground wire (I will manage later by connecting ONE SCREW of the chassis), I was unable to eliminate the background noise.
I therefore advise you to try a screw from the chassis of the preamp, it might be cleaner than the outer terminal of one of the RCA connectors.

Audrey · Answer

Good evening everyone, I want to give my friend a vinyl turntable for Christmas (he misses his old records) but I clearly can't afford to buy an amplifier with it. So I wanted to know if I could connect this famous turntable to a MD input of a hi-fi system since I have absolutely nothing else. (This input used to connect my TV to my system back in the day) I hope you can help me, so I can quickly change my mind if it doesn't work, or if you have another idea on how I could manage... my friend is good at DIY but I want it to remain a surprise, that's why I'm reaching out to you.
Thank you

little big man · Answer

Good evening Audey  for information http://www.commentcamarche.net/forum/affich 4111776 branchement platine vynil#0  talk to you later  lbm

dj bass · Answer

I also have an old turntable, and I connect it in mono, and it works fine.

filou · Answer

Can you connect the turntable to a TV?

Ground connection for vinyl turntable to amplifier

8 answers

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