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?


If I bonk my PC speakers, the hum goes away for a while. Wiggling the wires can make it come and go. Probably a short in a wire or connecter, right? They’re 20yo.