Okay, I know that "boominess" is not a real word... I have a Denon 3312 and a Yamaha 2010 set next to each other... And I am trying to decide which one to keep based on sound, since I can get some stereo amps for zones 2 and 3 if needed.
I eq'ed both amps using their built in systems. I did both multipoint and single point. Right now I am on single point (it's faster to reset). I followed the Audyssey FAQ subwoofer instructions: phase at 0, low gain (1/4 volume; if I do 1/2 Audyssey gives up and sets the sub at -12 dB; 150 Hz low pass). Here's my conundrum: out of the basic eq, I like the Yamaha much much better. My sub never feels boomy. Even though the Yamaha says the sub is set at +0.5 dB (which I since bumped to +3 dB) I never feel the bass vibrations. The Denon, on the other hand, is VERY boomy. Ironically, its sub setting is a negative dB value. So I guess that one can't compare those +/- dB well across different brands.
The thing that I really like about the Denon compared to the Yamaha is Dynamic EQ. I have to turn the volume up on the Yamaha at night to get to hear volume (~ -25 dB on the Yamaha) but then explosions etc. are really loud (I have adaptive DRC set up to the max). With the Denon, I can go down to it's -30 dB to -40 dB and the dialogues are more intelligible (probably because they're raised a few dB all the time) and the explosions don't swing as much as on the Yamaha. But the sounds is very boomy. So much that it is tiring even at low levels. I am watching The Avengers as I figured I'd have plenty of swing in volume to test Dynamic EQ with
That same boomy sound (Denon) vs not (Yamaha) happens while listening to music at higher levels (-25dB to -15 dB). How do I tame it? Lowering the sub eq doesn't seem to be the right thing, or maybe I haven't lowered it enough yet? If I can get to a sound like the Yamaha, I am pretty sure that Dynamic EQ will win me over for night listening. (Type I, as my girlfriend is trying to sleep with her head under the covers.)
Edit: I thought maybe the crossovers to the sub were wildly different but i don't know where to find them on the Denon. on the Yamaha the crossover was set at 160 Hz. Yes my speakers are really small (HTIB type: Cambridge Soundworks MovieWorks II).