davidsrsb wrote:Isn't the Heresy a sealed box design, so the bass roll off is gentler
It is, and to you and BX:
I am an objective kind of guy. I own several pairs of 2 and 3 way Klipsch, Polk and Infinity ribbons. Do not take my previous comments about klipsch vs polk as a slam on klipsch. Yes, I have heard polk monitor 4a up to the SDA/SRS.
The klipsch vs polk:
Both speakers have +/-. I use Klipsch for movies and DVD's with some music. I use polk and infinity for music only. I cheated by upgrading all of them, but the character is the same. The key differences are that Polk is a softer, but more spacious and dimensional presentation, where klipsch is more focused and attack oriented. A case can be made for either, but I am lucky enough not to have to choose.
FWIW: yes, I have owned a couple pairs of klipsch reference speakers. And if you go klipsch: go horn. In my experience, the new reference cannot compete with the separate/individual mid and treble horns of the classics like the heresy.
Both klipsch and polk can be modified to greatly improve performance.