Originally Posted by adidino
One thing I highly suggest is a Room Perfect calibration is done and done properly. If the dealer that is doing the demo for you does not fully understand how Room Perfect works and how to conduct a proper room measurement, you will not achieve optimal results.
What he said.
There is a doc in the first or second post of the thread from Ron Cornelius which summarizes the best ways to do Room Perfect.
It would be good if they had a laser measurement tool, or you provide one, to get very accurate distance measurements. Each focus position needs all speaker measurements, and you should do multiple, and play around with different seating afterward, changing the focus position to match, and try global, which averages all listening positions.
If doing stereo subs, and no other others, the Subwoofer needs to be turned off in the speaker settings, and your subs connected to AUX 1/2, and your mains set to XXL. Then in the AUX subs, you set the crossover you want, at which point the low bass and LFE to be sent to the subs (80, 63, 50 whatever is best with your setup) instead of your mains.
The subs should be relatively balanced with each main. Make sure they stop RP measurement after the minimum Room Knowledge is achieved, and check the Bypass level offsets - if any speakers are raised or lowered more then 12 db, something is not balanced - likely your subs are too low or too hot. Stereo subs need to be as physically close to the respective mains as reasonable.
If this is confusing to your installer, you're in trouble....