i am having trouble deciding if i want to change my sub setup right now i have two thunder 8000 twelves but i am curious about a single fifteen i am running an audiobahn a8000t amp pushing 800 at two ohms what i was wondering is can i get the same punch from one fifteen that i do with my twelves i just finished peicing this system together a few months ago but i think i am still lacking in the bass compared to how the rest of my system sounds