Mark, I think you were the one along with Ivan that suggested to get my Thor off my floor. With the addition of the additional amps I took your suggestion further. I moved all the amps forward considerably to allow the Thor to breathe. I have no doubt that Legacy would never compromise their down firing sub so this must not be a critical issue. Also, I know folks use ported speakers very close to the wall to boost bass. So, your concern about the carpet is not warranted, right? Could raising the speaker decrease the bass output?
Best
Charles