Originally Posted by LTD02
"Not in this universe."
this is what is called a platitude. it is useless and inflammatory.
what numbers are you using bosso?
i'm looking at 115db from 4 av15h's assuming that they perfectly couple and have no power compression (ideal case) in 1/2 space with 1000 watts per driver in a total of 7 cubic feet enclosure.
114.5 is actual measured spl with 20hz tuning in the pb13 ultra from ilkka.
that seems close enough to justify my comment. on top of that, i mentioned that he may be measuring the peak of a mode. given the different locations and the bass smoothing using two non-colocated subs and i can see how the pb13u could exceed the dual dual av15h at 20hz.
Hey, young man... it's always nice to be referred to as useless and inflammatory (as if your statement is somehow not) by someone who has never built or heard either (any) device.
I base my comment on actual in-room tests, measurements, listening to every manner of source, common sense and experience.
And your comments are based upon what, a software model of one vs outdoor 2M GP sweeps of the other.
First, if one sub will "kill" the other everywhere but right at 20Hz, then it's an empty exercise to even make the comparison. There are many reasons why this is so, but my comment simply corrected your errant statement. I had no particular desire to go into the details. I hope that's OK with you, but probably won't lose any sleep if it isn't.