sudharl
I’ll assume since you are using 12g wire, it is stranded: it is SO MUCH BETTER to go to an electrical supply house in your area, and purchase 12g SOLID CORE COPPER WIRE. I use it, bare end and twisted together, (from Amp or Integrated) and have never been disappointed.Whether single or bi-wired, it is easily the most cost effective answer. I read years ago a comment made by a high-end speaker mfg., who said this is easily the best for most amp/speaker combo at a value of $78,000 or less.
In my area, the the 12g Solid Core Copper wire (in various colors) at $0.20 (+ tax ) lf - so to 6’ bi-wire my speakers was under $10...
MOST IMPORTANT : BREAK IN FOR 300+ HOURS CONTINUOUS PLAY (vary volume - low overnights, various changes in volume daily for several hours at a time).
Other alternates you might consider: NORDOST FLAT 2or FLAT 4, and cables from JW Audio (similar what you could make yourself, except he cold-treats the cable as well).
You were on the right road with the 12g - now go the rest of the way and be surprised...
REMEMBER: Twisted together, bare ends and adequate break-in.
Good Luck Bud...