So i have a couple of friends i bowl with, and i heard one of them has a bangin ass system so of course i would like to hear it. He has an Echo, with a 12 inch kicker L5 in the kicker box that they come with. He turns up his stereo and im not going to lie its loud for the 1 12 in the trunk. but i could tell that he was trying to show off and i was afraid he was going to blow his sub because it sounded like it was starting to distort. so i asked him how he tuned his amp and he said he put the db control on the amp to +18 and he just turned the gain up until he thought it sounded right. I proceeded to try and tell him he was going about it the wrong way but he swore up and down that he knew what he was doing and that you cant blow a sub as long as you have the right ohm load put to it........no matter how loud you turn it up it wont blow he said. I even gave the kid this website and god only knows if he checked it out to see the tutorials and everything on here but i just want to get it through to this kid before he fails his entire system and ends up having to spend a lot of money so he can break another set of subs. I myself have 2 rf t1 12's on a hifonics brutus and i showed him mine and he was suprised that mine wasnt louder than his and i tried telling him that i didnt have my amp turned up because i dont have my electrical system up to par yet, and he still said because i had 2 12's it should automatically be louder. I dont know what to do to help this kid lol. anyone have suggestions?