ok well for starters. i would like to know just how bad my amp is. because i have been reading user reveiws of it and not too good. i have a kenwood excelon kac-x811d . i was planning to wire my sub to run it at 4 ohm's but i guess thats where the amp overheats alot. i dont know if my alpine swr-1222d can handle 900 or more watts rms. people say it can and does good but still . the thing is that the reveiws also said that the amp runs best at 1 ohm. but like i said at 1 ohm its like 900 + watts rms. and my sub is 500w rms. i dont know. and also in my head units guide (before i lost it) said that i can control my amp from my head unit and my amp has the slot to be controlled but the cable is kinda expensive. should i just not worry about it. and just fine tune when i need to.