Can someone please tell me if the length of a speaker lead affects the performance of the speaker. On my system, which is a videologic digitheatre dts, the left rear speaker seems a little quieter than the rear right so I have to increase the level slightly to bring them into balance. Now, the lead feeding the rear left is approx. 15 feet longer than the one feeding the rear right due to routing problems in my room. Would I be better off increasing the length of the rear right lead to match that of the left?