Originally Posted by wvu80
Question for you, Bman. What crossover numbers do you use for your fronts and centers?
Since you have three subs (and I would let that new Klipsch break in for a while) I'm puzzled why you are getting the significant nulls you have commented on.
As with you, per Audyssey's recommendations, the mains are set to "Large" with the cross over set to 40Hz. I've checked other crossover settings via REW and the Audyssey recommendations are the most accurate. The center is set to "Small" but the center channel crossover is also set to 40Hz. The LFE is set to LFE+Mains.
Using a continuously generated 78Hz tone (the frequency of the null), the lowest reading is opposite the small support wall behind where I sit. My theory blames the support wall. To the left and right of where I sit, the room opens to the kitchen so there's no reflective wall to create the null with. And of course, this is where the wife sits. Oh lucky me.
I want to try positioning the sub at the base of the offending support wall behind where I sit but I don't have a cable long enough. The subwoofer cable needs to be 25' and my longest subwoofer cables are 15'. The reason for the hesitation, being retired and having just purchased an upgrade TV for the man-cave, the RW-12d with needed accompanying cables and about $250.00 worth of LED, power saving light bulbs, I'm hesitant to throw ten bucks away, just to see if moving a sub to a single location will help. But you know I have to do it. Maybe next month. It may seem cheap or silly but it all adds up and I like to spread things out as best as reasonably possible.
As you suggest, I like to get forty hours on the new subwoofer's driver and it's only been used for one movie, "The Flight of the Phoenix." And as you know, that's a great bass movie. Believe it or not, that movie lost money.