I have a big problem with my speakers. After returning to my desk (coming from outside) I must have built up a static charge. I started to adjust the treble knob on the sub-woofer unit and I released a large static shock from my finger to the knob. Immediately after there was a hiss/distortion sound that was constant. I have tried unplugging the speakers and powering off the woofer. I don't know what else to do. Any help is appreciated!