Digital Designs 2000a SVC 4 ohm 300wRMS right now my US Amp is powering it with only 180wRMS, but it is very loud, nothing like 2 12's, but loud indeed. i have never had any problems with it as i'm sure you know DD's build quality is rarely surpassed.
it shakes everything in my car(not that i want it to) and actually does extremely well the low notes. one of the loudest songs on it is a bass mekanik song that peaks at like 40hz and 50hz, i think. when i let people listen to my system, i always ask them what they think it is and they Always say 2 10's or 2 12's. then i show them and they can't believe it. ii tell them that the majority of that bass is due to the well-built enclosure that the owner of my local audioshop built. then they say "where do you go" lol
