I remember we had this discussion about the brick-wall about a year ago, and my recollection was that Axiom went from no brick-wall to brick-wall. Please check out
this and
this excellent write-ups by Alan Loft. The EP400/500/600 series all have brick-wall filters and he reports:
If a user wants to experiment and set the subwoofer's crossover at the same frequency as the receiver's crossover, better integration of the subwoofer may be achieved. Experiments at Axiom have shown that with the EP400/500/600 subs, it's advantageous to do so because of the brick-wall algorithms in the DSP circuits. This is opposite of what Wid, Sirquack, and I recommended earlier in this thread.
