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No Stupid Questions@lemmy.worldEnglish · 2 days ago

Should speakers hum when they're connected to a stereo, but the volume of is turned all the way down?

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Should speakers hum when they're connected to a stereo, but the volume of is turned all the way down?

sem@piefed.blahaj.zone to

No Stupid Questions@lemmy.worldEnglish · 2 days ago

I have some old speakers in the house that I wanted to test. So instead of messing with the real stereo unit from the 80s, I bought a $30 stereo from Amazon, and new speaker wire.

The speakers sound okay, but there’s a hum coming from them all the time. Even with the stereo volume knob turned all the way down. Is this normal for stereo systems and I just haven’t noticed?

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Geometrinen_Gepardi@sopuli.xyz
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Disconnect all copper input cables from your amp. If the hum stops, it was a ground loop.
- sem@piefed.blahaj.zoneOP
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  There are already no input wires (it is using Bluetooth) so I guess it is not a ground loop.
  
  Thank you for the education! I’m assuming that the inputs, if they are grounded, can lead to the ground loop?

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