4000rms

Thought I'd make the point if me being s newbie to all if this but. I have two R.E. Audio XXX D2s 2000w/RMS each, inside a custom made ported box made for their specs. U.S..Amps AX2000 series 2 channel amplifier running 1000w @ 2ohms. These subs were amazing, hard hitting and great quality...