OK, thought I had read it was 14 gauge for both the F112 (mine definitely was) and F113. Even according to JL, it's 14 for the F113:
Quote:
Originally Posted by
msmith_JL 
Our Fathom power cord is a 3-prong, 14 AWG and it's 6 ft. long.
I cannot really recommend that you use less than that... it's part of our UL certification. But, in your house, you're free to try anything and see if it works.

If you buy a generic 12 gauge power cord (UL rated, mind you) then I believe it MUST have a 20 amp IEC connector (this is a different pin configuration, referred to as C19). BUT, I do not think they use 20 amp IEC connectors on the F113 (every photo I can find shows a 15 amp connection), so I would suggest you check your old cord again to be sure. You can get a standard generic 14 gauge IEC (that's a C13 pin configuration) power cord practically anywhere for about $10 (amazon has tons of them). If you in fact have a 12AWG,
JL Audio-supplied cable (seems doubtful), then why not order one from them? You're simply not going to find a cheap 12 AWG cable with a C13 IEC connector that's worth buying (there is some junk from China on ebay, but I would never buy from there). Be sure to buy from a trusted vendor (like monoprice).