If you look at the CEA-2010 data provided by the manufacturer, it basically just doubles the output of the Monolith 15" THX Ultra. That is pretty much what you would expect given the design. Since I already tested the other Monolith THX subs and found their claimed measurements to be realistic, I think you can trust Monoprice's performance claims with this sub. I don't feel there is a lot to be gained in me reviewing this sub aside from a broken back.