Heavier cables for lower impedance speakers?

[Boomzilla]

To better answer you question, the length also have to be considered.

For example if under 10 feet, switching from 12 gauge to 14 gauge probably will not make much of a difference. But for over 10 feet, it might since cable’s power loss is product of current (times 2) and wire's gauge resistance.

Hi Smokey!

In theory, you're perfectly correct. In my case, though, the 12 ga. wires were 14' long, the 14 ga. wires were 8' long. My speakers liked the 12 ga. wires but not the 14 ga. (despite their shorter length). I'm thinking I'm just going to cut those 12 ga. wires in half, running dual runs of 7' each.