of course thay are an this is my second system i hope it sound good before ia had 8000t and a a6004t audiobahn amps and croosover a sony hu and 2 sony xploid 12 " and it was al right the only problem was that i was never able to hook the 2 12" to bahn cause it overheat and want to clip protection
I am giving my one type r 12 2 ohm sub 900w rms. but my box makes the sub hold about 1200w rms easily. So i guess it is up to what you wanan do with your box and so forth but that will be nice, and i only have one and it kicks or will kick the shiot out of me