A friend of mine bought a new Kicker L5 12" the other day and a Kenwood Excelon amp, i think its around 800 watts or so, i didnt get a good peek at it. He has this is a jeep grand cherokee in a decent size ported box. When i heard these speakers in the store i was pretty impressed, but in the jeep they just sound like a baby fart thats not even as loud as my 6x9's (j/k). Anyways, just wondering what could be the problem. I know my friend is a ******* and probably forgot to seal the edges of his box or something like that, but the local store hooked everything up for him (which I reccomended against because they are morons). All in all I dont see him enough to really care or help out, just wanted to throw my $0.02 in there.