One quick question:
Is it possible with the 4520 to assign the FL/FR channels via the Pre-outs and leave the rest ( C/SR/SL) to the build in amps of the unit?
Greetings from Germany
I've done the exact same with my Onkyo 805 after running the Audyssey a few times and finding that my tastes for action/scifi/horror prefer a slightly greater presence of the side surrounds and more so of the back surrounds. I'm expecting the same when I get the 4520 shortly. I suspect that since the heights have been commented on by others that they are not that present in many soundtracks that I may experiment with boosting the speaker levels after calibration also. I am also looking forward to hearing the wides as a way to fill in sound passing from front to side surrounds.
Here are the results of the calibrations for the 4311 and the 4520. Same room, same speakers. I am in the process of adding additional room treatments since the installation of the 4520, which might account for the slightly higher trim levels with the new AVR. HST, the reults are not what I would call significantly different, with the exception of the subwoofer. With the 4311, the sub channel required the so-called "distance tweak" to achieve flattest bass response, while with the 4520, flattest response was with the Audyssey default distances. And, subjectively, the bass sounds better with the 4520, although it could be expectation bias.
Edit: Subliminal message, you know you want to upgrade........
IMHO, 99% of the sonic signature of a system is attributable to the speakers and the room. HST, I hear no sonic difference between the 4311 and the 4520. Except, of course, the previously-mentioned anomaly with Audyssey-calculated sub distance differences. This, of course, has nothing to do with the quality of the amps.
OK, BP, here it is. Measurement is taken from the Sub1 pre-out. LFC requires Audyssey to be engaged. DEQ and DVol are off, of course. At 20Hz, toggling through LFC values of 1,2,3, and 4 results in a decrease of -15dB, -20dB, -24dB, and -27dB, respectively. Pretty kind to the neighbors, I suspect. :)