Originally Posted by IgorZep
These last two things have nothing to do with pumping, as they are both completely linear. However equalization (any, not just digital) reduces the total headroom of the system, and so if you do it too much you can over-drive the amps for example causing clipping (or gain compression) artifacts that can be perceived as pumping...
Dynamic EQ, on the other place do (purposely) compress dynamic range, so - it can cause pumping by itself. How perceivable it is to everyone I don't know, I've never felt it pumps (while Dynamic Volume pumping is terrifying) but it definitely 'colors' the sound to some extent. Still for me with DynEQ is better than without it. But I reduce surround levels a bit to avoid unnatural highlighting of it (in movies) and RLO (for other content).
Your description is the closest so far to what I experienced with Dynamic EQ; it sure colors the sound.
I have full respect for that "euphonic" preference type of sound by many. ...No problemo.
And I know very well what I hear and what I like and like not, when it comes to Audyssey Dynamic EQ, and Volume too. ...I prefer without; without any pumping effect.
And I let Audyssey MultEQ XT32 engaged @ roughly 75% of all times; always with movies, and sometimes with it disengaged for music listening (stereo and/or multichannel hi-res). ...It varies; from my various music sources, the number of channels active @ the time, the genre of music I am playing, and my mood of the moment (with different adjustments; like full range speakers @ front, and/or all around).
But Audyssey MultEQ XT32 is reason enough for me to switch from Integra to Marantz; no doubt about it.
I want Dolby Atmos and Dolby Surround too.