I have in fact owned 2 10" r's and they didnt give nearly the ammount of bass this thing does, and i have owned 2 Rockford p1 punches 12" and fed 200 rms to each sub and it didnt sound as loud as this single sub, i really could care less of what you say, i have heard many subs and i have made my conclusion, its not the best for SQ but it makes lots of bass, my car registered at 112 DB with 1 sub in a custom ported box for 29hz.If you dont have anything positive to add to this thread please dont post.