Ok, I get it re the time alignment thing. This kind of implies that a fair number of folks are getting mediocre/less than optimal sound, by putting a sub in an out of the way spot and hoping for the best. I was going to place the sub in front of the left speaker and near the side wall, either firing toward the center...at a right angle to the front of the kef, or angled toward my listening chair. Kind of like the left side of an isosceles triangle.
If I pick a small enough sub, it could permanently be in the center in front of the equipment rack and the speakers. It’s its too big, then it’s a no as to function and looks. Moving a sub into position each time I listen doesn’t sound like fun.
What’s the value of the old subwoofer crawl then if you don’t have a sub with dsp capability?
As to two subs, I’d prefer not to do it. It’s a small living room and it has to be functional. I don’t listen to classical and a lot of the music is fair to middling. I’d rather listen to songs that I like than songs where the recordings are outstanding, but I don’t care for the content. Maybe some day when I have a dedicated listening room.
As to a servo sub, wouldn’t the servo software act like dsp capability rendering the placement not as critical?