bob_reynolds,
You stated:
You stated:
"Though I’m a fan of Dr. Geddes and Duke’s implementation, the above quote isn’t quite true. The vast majority of systems use parametric equalization to manage room modes. Both approaches have their place."
It is true that the vast majority of systems do use parametric equalization.
But your statement implies that parametric equalization is as effective as a DBA system in managing bass room modes. This is definitely not true.
A parametric equalizer, at best, can optimize bass response at a single location or sweet spot. Wherever the calibrating mic is placed will be the only spot in the entire room where bass is optimized. Get up and walk anywhere else in the room and you’ll be disappointed in the bass response.
A DBA 3-4 sub system will eliminate the vast majority of bass standing waves in any room, optimizing bass response in the entire room. There’s not a bad seat in the room.
Both may have their place but they are not even close to equal.
Comparing parametric equalization to a DBA is like comparing a band-aid to a total cure.
I stand by my statement.
Tim