I used them all season last season in comp. and I did loudest score posted with two 12's 150.2 at the head. And two 15's did a 152 head and a 157 floor could have been louder but I got a great deal on them and could not pass it up. There is better for cheaper but they can get the job done. I am not a fan of the new MOJO's at all only ones I would have would be the older orange and black models.