Just done, yes its strange ?
Does something can explain such this action ?
Thank
Regards
Alain
To get rid of interference loops. If two or more grounded instruments are connected together via a
signal cable, the resulting loop picks up mains frequency interference (or double frequency - 100Hz or
120Hz depending on where the use lives). This is something that plagues audio - a so-called hum loop.
The way to get around it is to minimise the loop area - plug the two pieces of equipment into the same
power strip right next to each other, and cable tie the mains cables together. Minimum loop area gives
minimum hum.
The brutal and unsafe way is to disconnect the ground of everything except one instrument. Which is
surprisingly common. Alas.
Craig
