What size speaker wire should I use? I went to Car Toys to get wire but ended up not being enough. I have a dual voice coil sub so there are two sets of wire going to t the sub. When I went back to get more wire a different guy gave me a different size wire. I'm guessing that having only one size of speaker wire would be best so when I go back should I get the bigger or smaller size? Is the S.Q. or SPL effected by size of wire? Thanks.