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Hum in speakers

Hello all

I am trying to set up a modest audio system and cant figure out why there is a hum when I turn the volume up past 55. It only happens when there is vinyl spinning. If I turn volume up without vinyl on there is no hum. Below 55 volume the hum is not there.

note: I did set the speaker impendence to 6 ohm via the receiver settings. 

Set up is:

 - Sony STRDH190 2-ch stereo Receiver

 - Warfedale Denton 80 Speakers (16 g speaker wire)

- Technics SL-1500C Turntable 

 

 

128x128defandum
newbee
4,767 posts
 

I think I didn’t ask a clear question, so I’ll be a bit more specific by illustrating an experience I had. I had a wall wart (12v transformer) plugged into an extension cord lying on the floor behind my components. I had a cable from my pre-amp to my amp which was very close to the wall wart = hum. Moved the wart, end of problem. Components have internal transformers as well and if an RCA cable passes too close it can create a hum. It’s not just a matter of where your components are plugged into a wall. FWIW.

curiousjim's avatar
curiousjim
4,692 posts
 

If you bought the tt new, I’d return it and try again with another new one. Everything else seems to check out.

defandum's avatar
defandum OP
20 posts
 

thanks @ newbee I'll try that 

defandum's avatar
defandum OP
20 posts
 

@curiousjim I think its getting to that point for sure

jayctoy's avatar
jayctoy
4,043 posts
 

Try  to put your tt to onother wall socket , try separating it from Sony.

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