got them in a difrent box 2.6 tuned @ 33hz with a 2 inch slot port sounds the same but notice 2day since the car is in the drive way i noticed that they flex the roof an front window not as much as them other ppl butthe box is 2.6cuft wit both subs in it sharin the port i belive i can make them even louder but i have limited space so it suxs its in a firebird any1 got any ideas 2 get a bigger box in there but it sounds go0d an ok on the outside like 20ft away an like 100yards my friend said its clean loud an deep so i gota wait till its on the road 2 tell my self