did some messing around with my 12's box. I took the MB Quart's out and rounded all the edges on the box and sealed up around the speaker wire better. Also took out my C&D batt and put my kinetik 2400 in. I was planning on putting my MB Quarts back in, but I really wanted to hear these 2 Soundsplinter rl-p's I got. The quarts were very impressive for a cheap sub, but they were really struggling to take the SAZ-1500. Anyways, on to the results. Now keep in mind there are quite a few variables to take into account here. When I first metered the mb's, I had been driving around all day beating on them. Also, I did not try moving the box at all. I did not mess with box positioning today other than just moving it forward a few inches.
Playing Jeezy's trap or die( same song). Around the same temp today as well- 146db sealed on dash
Decent for 2 12's and 1500w on music. The Rl-p's crush the MB's on the lows as well. Plays 25hz quite nice. Pretty big gain. Could be a number of things or it could just be the MB's don't meter well