Newbie Q: speaker cable length? Different OK?


Hi. This is a complete newbie question. I've ordered two 10' amp to speaker cables, but I really need 15' on one side. Monoprice (for better or worse) is willing to RMA the cable(s). Should I go with two 15'? Or is simply swapping out one 10' perfectly acceptable for signal?
donzi
A 12 gauge copper conductor has a diameter of approximately 2 mm, as can be seen in this wire gauge table.

My kind of chart! :)
Yes, Al, to me, too. I felt kind of silly when I figured it out. I still had the 7/17mm figure in my head, and I had the cables in my hand!

Wondering about the bare cables, since both amp and speakers will take a bare wire connection, is there any reason not to consider simply going to Lowe's, and buy something like this, plain wire? That example, a 6 gauge would yield like a quarter the resistance of the 12 gauge. (How'm I doing, Al? <grin>) Both speaker and amp would probably take down to a 0-gauge, in terms of size. Is it possible to simply wire them with such cable? (And the "non-metallic" reference, I presume to mean non-shielded, right?)

@czarivey
 is this the type of solution that you're referring to that you use?