Okay, seems pretty weird but in the last few days, everytime i lean my left elbow on the desk, my speakers make a god-awful crackling sound. i don't fancy having to open them up or more expensivly - buy a new set. any ideas?
they're a set of creative 2.1 speakers (cannot remember the model name). the sub-woofer is pretty damn nice though

they're about 3 years old, maybe 4.
thanks guyzes