man my 2 digital dynamic 10's powered off 500w memphis d class...hurts my chest and will take breath away on certain songs...i had 2 twelve in memphis' b4 i got 10s and the tens hit way harder than they did...i think the digital dynamics are like 450 watts nominal.i dunno what kinda decibals ur lookin for...but theres only so much a human ear can take lol