Ok so i finished the install sunday and everything seems to be flawless. i tried tuning the amp with a DMM. im running a 600W rms amp @ 2ohms to the 2 Subs (300RMS ea.) so the calculation should be 600 * 2 = 1200 (sqrt of 1200 = 34.64) so i tried tuning the gain to get 34.64v on the DMM.. does this sound right? this is what i did i had all the settings on the stock head unit at 0 (bass, trebble, fade..etc.) and the remote base boost control on 0db, and gain set down and freq high and had a 50hz/0db cd playing to test with the DMM.. got it to as close to 34.64 as possible without going over.. anything sound wrong? ( the subs wires were disconnected from the amp and the DMM was inserted in their place.) i have the amp hooked to the back speakers so when i use the 50hz/0db CD i can hear it playing.. which im not sure is good for my stock speakers but i have no other way of doing it since its getting the signal from the back speakers.