So tonight I went to a speaker competition with a buddy of mine and got to see how loud both of our systems went. I was running 2 12's on a 1800watt amp and hit 122.4DB and i thought I was loud my friend then stepped up with his 2 12 Rockfardfosgate T2's that weigh a wopping 75lbs a piece and managed to hit a 143db and his car hits like no other. There were also several other cars there and a couple of them managed to hit 150db and it was a blast to listen to some of these cars thump. We are adding another amp to his subs and hopefully we can come close to the 150DB lvl because each of them will now be receiving 1300watts RMS so they will be cranking the power