Why do I have a hum in my Bose headphones even though they are not plugged in?

Tompaxton

Honorable
May 2, 2012
2
0
10,510
My Bose headphones have a loud hum when I switch them on. It doesn't matter whether or not they're plugged in. Any ideas?
 
Its the raw power surging through the magnets,
ready to blow your aural receptors to hell and back screaming :)
Plus you may be getting interference from another strong field nearby, speakers,fridge Tv etc
is it a constant hum or does it alter if you move the headphones around?
Moto
 

Tompaxton

Honorable
May 2, 2012
2
0
10,510


Constant hum unaffected by moving around the room.