Hi Everyone, I'm trying to build the mic that Touchmods is selling, based on their posted instructions: http://touchmods.blog.com/2420619/ I'm ordering parts from DigiKey, and I'm trying to figure out which way the capacitor goes: (+) of cap to (+) of mic? or (-) of cap to (+) of mic? Here's what touchmods says: So.. I would measure the voltage of the mic by itself, and that would tell me which way the cap goes? Couldn't I just solve this by using a "non-polar" capacitor, like a ceramic or film capacitor? why does it have to be polarized?