Topmusicanswers
It a correctly designed amplifier circuit, this is easily solved: the 0Vdc in the amplifier is connected to earth. This stops the voltage floating, eliminating the hum. If the amplifier isn't properly earthed, you yourself act as the earth connection - but only when you touch the metalwork on the guitar.
- Why does my guitar stop humming when I touch the strings?
- Why does my bass buzz when I touch the strings?
- What causes electric guitar hum?
Why does my guitar stop humming when I touch the strings?
It's normal for hum to decrease when you touch your strings. If the hum or noise increases when you touch your strings, that's a sign something is wrong with the wiring of your guitar. If you know what you're doing, check the wiring. Otherwise, take your guitar to somebody to check for you.
Why does my bass buzz when I touch the strings?
If your bass hums once you touch the strings (but is otherwise quiet), you have a grounding issue. If your instrument hums but becomes quiet once you touch the strings, you have a shielding issue.
What causes electric guitar hum?
A major cause of hum is the ground loop. It is the circuit loop that is formed when two pieces of audio gear are connected to each other through a cable shield and also through the AC safety ground. ... Two equipment chassis (guitar amp and mixer) are connected to two separate safety grounds by their AC cords.
