Electric fields messing with the sub

[Adri]

Thanks Jennie I didn't know you couldn't use ultrasonics with headphones ! Mine are studio headphones which have a high-frequency range and thus can play the ultrasonics without any problem.
The problem is that moving the cables apart is not really great because the cables are then on my desk and when I'm working on it, it's very unpractical. I'll try to find a way to keep them apart without them being on my desk.