If you notice, the Audition Series speakers are all different sensitivity levels. Your dipoles are 89db. The large AS-F2's are rated at 93. That is a huge difference. For every 3 db increase in volume, you need twice the power. What that means is you need to favor your rear surrounds over the rest of the system based on the low sensitivity rating. Instead of saying your rear surrounds are 6 feet from you, you can try 20 feet and see if that helps. You may also try raising the db level of the rear surrounds. I'm not a big fan of auto setup. The Yamaha's are supposed to be very good, but the good 'ol tape measure and your ears are my suggestion.