Originally Posted by kamiraa
Originally Posted by AustinJerry
I agree with Chris, you are misinterpreting the results. Remember, both AVR's have MultEQ XT32, which is an Audyssey technology, not a Denon technology. There has been no technology change to MultEQ XT32, or we would have heard about it from Audyssey.
Probably, I'm trying to make sense how 0 change in wiring, room layout, speakers, angle, seating, etc can give such different results.
Maybe they released new firmware and fixed stuff quietly?
In my experience, having changed through multiple Denon AVR's with Audyssey from different generations, I also get changes in channel levels (absolute, not relative) with different models. It could be something as simple as the different mic, or some tweaks in the background to the digital gain structure at the DSP level. For example, changing recently from a 2310ci to a 2113ci resulted in channel levels that were about 3dB higher across the board. However, when I measured with an SPL meter the absolute output hadn't changed.
As long as the *relative* levels are good and the system sounds balanced, I wouldn't sweat it.
In terms of your musings on EQ (cutting peaks vs. raising valleys), as Chris notes the EQ is independent of the channel level trims. The channel trims are set via the Audyssey "chirps" which measure the speaker's output without EQ. When Audyssey applies its EQ, Chris (Audyssey CTO/founder) has explained that there is a "normalization" process by which the relative levels are maintained to account for whatever EQ cuts or bumps were made. For example, if the sub volume is set to a specific level with the test tones during calibration, but there is a massive modal hump at 80Hz that Audyssey needs to cut by 10-12dB, the resultant average level of the sub may be reduced from where the channel level would have set it. To correct for this, the overall sub level is "normalized" with the other speakers to make sure the average level is still balanced.
However, this "normalization" process is part of the Audyssey block and is still independent of the channel trims -- otherwise your system balance would be thrown off if you disabled Audyssey EQ.