Senior Sales Engineer Microphones and Mixers Forums Moderator (800) 222-4700 x 1397 Email Ted
Fort Wayne, IN
Wow, that is scary...I would definitely say do NOT try that. He did say "everything attempted by professionals" but somehow I don't see professionals using a bare wire like that to solve a grounding issue (at least not in anything but the most McGyver-ish of situations).
I recommend getting a no-contact voltage tester (about $10 at Lowes) & hold it near the mic. If it lights and/or beeps you have a short allowing current to flow to the outside skin of the microphone (probably throught the cable shield). Test the amp next. If there is no current present, the problem is just static electricity (is the stage carpeted?) If you do have a short, try a different amplifier and recheck the mic with the voltage tester. If no current is present, the short is in the amplifier, repair or replace it. If it is static electricity, aerosol sprays are availible to spray on the carpet reduce or eliminate it. Might I also suggest not touching the mic with your lips? You don't need to be that close for proximity effect to boost the bass.