let's say i have a long length of wire which is 18g. then i splice it to a short length of wire which is 14g. has my speaker wire's resistance (or whatever) changed in any meaningful way? ---- i had my new home pre-wired for 7.1. what they ended up doing was running some pretty thin wire, then looping it from one location to the other. i looked at the wire and it's definitely pretty thin...probably around 18g. however, i know i'll have to splice the wire coming out of the niche since the amount they left was pretty short. i just wonder if it's worth splicing with thicker wire or if (at this point) it really matters?