I have a budget (not cheap :P) pc-speaker set from Logitech (2.1) at home which are extremely sensitive to cellsignal interference. My iPhone is about 1m from any part of the set - including the wiring - but still i get the funky bzzzzz-bap-bap-bap-bzzzz-bap-bap every few minutes. (I guess it's when the iPhone "calls home" to the tower.)
I have another set at work, which were even cheaper, which don't have this problem. And here I have my phone docked just a few inches away from the controlling speaker. (2.0 system)
Is there anything I can do to the set to make it more shielded? I'm not afraid to open it up ;)
http://www.logitech.com/en-ca/support-downloads/downloads/speakers-audio/devices/232 <- this is the set I have. There is also a very audible ground-hum that I want to get rid of. Any tips there?