I am planning on making my own power cord for my B&K 7250 as it came with a piss poor 16/3 ga powercord. I thought that since I have 12 ga wiring through out my house I might make a power cord with atleast the same ga. I don't know if it will make any difference in sound but I am going to make one nevertheless, since its so simple to make. I am thinking of going 12/3 or 10/3 ga. My question is do I use a cord which has a few 'fat' conductors or one that has many 'thin' conductors? Which will give me better current delivery? Also do I use sheilded/unsheilded cable, given the fact that I dont have any ground loop issues. My speakers and the amps are dead silent (can't hear any hiss 1 inch away from the tweeters at full 18 db volume). Any other suggestions from the cable experts? Thanks in advance.