I used the 3805 Auto Setup Feature to let the receiver decide the speaker size based on the Crossover frequency.
After that I changed the Spaker levels for the front speakers because the FR was way out. The distance were OK.
Since I wanted a little more bass, I increased the level for SW by 2 dB.
For movies I left the sorround speaker levels set up by the 3805.
For TV:
Since in Lima, Peru where I live there there is no Dish, only cable, I use DSP Game mode since i creates a more "sorround" enviroment from stereo sources. For some channels with Dolby Sorround I use "Widescreen" mode.
For both Widescreen and Game DSP, I increase the sorrund levels by 2dB to enhance the sorround experience..
To evercome the fact that the 3805 does not have a trim level for each source, i increase or decrease all the channell levels for the mode normally use for an specific source. For instance, since I use Game DSP mode for TV, and the level from TV is about 8db higher than the DVD source levels, I decreased all channell levels by 8db. Not and elegnt way to do it but it works.
For Music listening I use Widescreen or 5/7 Stereo.
RommEQ:
For Movies I use Flat
For Music I use Normal, even when it make the sound brigther becuase that's the way I like. However if it is too bright, I use flat or Off.
Sorround A, B:
Mor Movies only A, since the speakers are located above ear level .
For Music listening I have setup the 3805 to A+B. That fills the room better in my case.
Subwoofer:
I use LFE+Main for both movies and Music listening
For movies (Dolby/DTS mode)I increased the SW level by 2db.
For TV or music (Widescreen and DSP) I had to increase the SW by 8dB to really "feel" the bass. This was my case and might not be yours.
At the end, it all comes to what you like...
Hope this helps