I got a question regarding speaker cables. Is there any difference between 8 gauge and 10 gauge. The length of the cables are around 7 feet. Also, what is the different between tin coated OFC and regular OFC speaker cables? I heard the tin one has better sound.Everybody already said it: for a 7-foot run 8 or 10 gauge is a non-issue. In fact, if we're talking about basic multistranded wire, the differences between 8 to 14 gauge and OFC vs. not are minimal.
Are you considering simple multistranded 2-conductor cable like an upscale version of lampcord? In that case it won't sound much better than lampcord and will have the same basic sonic signature because the cable geometry is the same. If you want significantly better, get individually insulated multiple conductors twisted around an inert core, hollow oval, a braid, ribbon, or at least solid core conductors in a twisted pair.
Any of these configuration differences will have more effect on clarity and musicality than minor differences in copper and gauge in what is essentially the same cable design (or lack thereof).