I had a buddy that has 2 dual 12's in that prefab plexi glass with blue neon that they always come in , and 2 pyle 15s in a sealed box ratchet strapped down to his backseat of his truck. Dude insisted his system was loud and all this BS. Buddy of mine told em to put his system where his mouth is and come here my 2 sa 10s off an aq 2200. Before that he did a bunch of shit talking about 10s being shitty and saying my products were off brand. Never argued because like i tell people, " I know what my system is capable of and what theirs isn't" So moment of truth i let em hear it , long story short he shook my hand man to man admited he was wrong and mine clearly blows his outta the water. Now he is the one asking me for advice.
Sorry, OP, but i have another kid, (not friend) similar to this guy whos all nut-happy about sealed. Saying there the best, Best thing i do. DONT ARGUE or even try. They are bull headed and wont change. I don't mind, hes happy I'm happy.