9500 VS XXX

[Tez 0]

Which would be louder. meeting all of their specs. same amount of power, and both 12's not that it matters.

[KU40 173]

should be MTX. 84.1 db efficiency vs. 83.8. But the XXX can handle twice as much so it can get louder with more power.

[audio-neon 34]

too many variables to determine accurately, the mtx is more efficient, but you also didn't list what kind of power you would be pushing. The more power you apply, the more the XXX starts winning the race. It can dissipate more heat.

[djjdnap 78]

i would say look at which sub has won more meets.

And what alot of competitors use..

I would get some DD stuff but its just outa my price range for the time being.