I have done my usual obsessive futzing around:

My listening position is 9 feet away.....Large great room with 20 foot cathedral ceilings.

Yamaha Adventage Receiver. Set up so far, Stereo, with a Sub. No YPAO.

Towers are now 80 inches apart, 13 inches out, with 1/4 inch of toe in. I did this running a variety of CDs in Pure Direct.

I then let the Sub chime in... I wound up putting in Q-Plug B, and setting the Receiver Crossover at 40 Hz.

Without the Plug 60 Hz sounded better, With the Plug 40 HZ sounds perfect.

Objectively, why does this result occur?

Blutarsky