  Well..anything is possible, but I'd sure like to see some graphs and numbers to back up that claim. Care to offer any proof? You dont' have to do the testing yourself, just post the proof you seem to have.  I would expect the HSU to be much boomier since it's ported, but have a lot less slam and total clean output of the A0S 000 since you are comparing completely different beasts here.  How be you back up your statement since you made it. Knowing how to cut 'n paste sub specs doesn't cut it and is no answer. Of course if you have nothing to offer except sub ads feel free to go away.  