on the installation manual for my kicker KX1200.1 it says i should use 0/1 gage power cable. i checked my setup and i have the JL Audio 4 gage cable. it works fine but should i change it to the 1 gage cable? will that give me more power from the subs?
But honestly, ive installed over 25 1200.1 Kickers in the past year and ive used 4 gauge on them all and have had no complaints. It really depends on how your subs are wired, if there in series it should be fine, if there parallel you might want to consider 0/1.