You put your finger on what's on my mind: getting decent equalization in the sub range with the on-board equalizer.
Where can I read an objective assessment of the Audissey Multi XT?
If I understand things right, XT applies
hundreds of filters. Please note the difference between vanilla MultiEQ and and MultiEQ XT. The latter will offer
at least 8x the filtering resolution for subs and sats. However, some people say its really the sub that gets the most benefit.
Also note that while you cannot change what XT does, you can STILL adjust to taste accordingly, after calibration. You can add aforementioned EQs such as SMS-1, etc, after calibration.
Lastly, using time domain correction as with XT is not quite the same as using level adjustments. The difference is more apparent with multiple viewers, when ringing tones that affect ALL positions are tamed. Reduction of overhang.
*The most affordable receivers with XT, I believe, are the Onkyo 705 and 805, whether new or refurbed. The 706 and 806 have downgraded to non-XT version of MEQ. (though you get dyn eq instead, but I don't have any need for that since I don't share walls with neighbors or have sleeping kids).
Nice discussion, carry on.
