Quoted from vid1900:Try that 10gauge wire, then switch to 10gauge Romex wire.
Make a pseudo bi-wire so you only have to disconnect a single wire to make the swap.
You would think that 10gauge is 10gauge - until you try this test.
curious how you are doing this. I have a decent onkyo system, and I used decent cable, not the tiny things that it came with, but am not as impressed as I think I should be.
or the CAT 5 option someone else posted above.