Hi romeo,

The cables for the front channels do NOT have to be the same length, nor do they for any other channels either. That's just a ruse retailers used to sell more Monster, Kimber and other stuff. Use 12-gauge for runs over 15 feet, 14-gauge for shorter runs; that will reduce resistance to insignificant levels so just measure out the lengths you need to each speaker.

For short runs, 10 feet and less, you can use 16 gauge.

Regards,

Alan Lofft,
Axiom Resident Expert (Retired)