Originally Posted by richlife
Where have I missed this "Extra Bass"? YPAO actually set all my speakers to Large except my fronts (which are actually the largest). But I think the fronts is because they have built-in powered subs, so it only picked up the midrange and tweeters.)
Ah ha! Having first run the Auto Setup last night, I didn't move on to the Manual Setup. So today I moved a few things back into place in my listening room and re-ran YPAO -- just minor change. However, then I tried another wiring configuration of my OM-6s (removed the sub input which for some reason the sales guy told me not to use back 16 yrs ago -- something about getting better bass if I let the Lex manage it). With that change, the A820 was also free to manage the fronts and indeed found them to be Large. And found a little fuller bass also. So THEN I went into the Manual config and tried messing around and found the Extra Bass. Well, Extra Bass really didn't affect anything. I guess I have about all the bass you can coax out of this system. My fronts and back surrounds are large with powered subs in addition to the separate Titan sub, so I think YPAO has nailed it at this point. I set the Titan to 0 and have this thundering orchestra (Beethoven's Fifth just came on) with continued brilliant clarity across the sound range.
Since I was a little confused at first, I want to be more explicit than the instructions I saw for Setup in various threads here -- hopefully, if I'm wrong, someone will correct me. Maybe some others new to the Yamahas will benefit. It looks like the thing to do is get speakers and components connected, then run YPAO from Auto Setup, then go into Manual Setup and reset subs to 0 and speakers to an appropriate size. I know many are saying to set all speakers to Small, but that doesn't really change my sound. I instead set them to what they are (Large front and back, small center, small side surrounds). That doesn't really produce audible change (to me) which leads me to conclude that the A820 is using the speakers as best can be. Thoughts?
MMichael, hope your presence speakers are doing well for you. My fronts are towers about 52" high. They fill my end wall (18x8' with a sloping ceiling that directs sound to me) with music -- it sounds like the orchestra is in here. So no issues with movie presence when the surround processor has control. (I'm listening to Beethoven in 2-channel. Hmm, now would be a good time to compare 2-channel vs. Straight vs. Pure Direct whatever they are. I need to read more also.)
Ok, a few minutes later, it seems that Pure Direct cuts the bass off at the knees. Doesn't seem to be much if any difference between 2-channel and Straight. I kept trying to imagine that 2-channel produced a wider sound field, but more attention to the detail says no. And if 2-channel and Straight are the same, then why have both?