Picking a speakers

The main reason for upgrading to the 804s would be if you wanted a fuller, more bass heavy sound and to do a better job filling the room.  I find bookshelves tend to struggle with large rooms at higher volumes then their floorstanding counterparts. If the sub is sufficient delivering bass, and the speakers/amp don't sound constrained at your listening volumes then I'd stick with what you have.

@soix ​​​​@ghdprentice 

+1 

This daring duo nailed it ..AGAIN ….

Thank you. My room is 19'x11', but my speakers positioned on the 11' side, so I think it should be enough sound for me. Thank you so much for your time and help. I'm new to high end audio equipment, but I really love music and trying to figure out what would work best without breaking a budget. 

I’m using it 50/50 music and movies. Denon receiver and Denon 2 ch amp, that I want to replace for another 3 ch amp eventually.

Very helpful info — thanks! Assuming your AVR has preamp outs as you’re already using a stereo amp, if I’m you I hang onto that center and save up for a good separate stereo preamp (with a HT bypass feature) and amp. Here’s an excellent 5-channel amp at a great price, and if you only need 3 channels you might be able to biamp your 805s, which wouldn’t suck because they like power.

https://www.usaudiomart.com/details/650007959-mccormack-ht-5-power-amp/

IMO your first priority by far is to get that AVR outta the signal path for 2-channel because it’s a huge bottleneck to the performance your speakers are capable of, hence the stereo preamp suggestion. Simply run the front L/R preouts from the AVR into the stereo pre and when listening to 2-channel the AVR will be completely out of the signal path, and you can switch between stereo and HT with the simple push of one button — it’s a beautiful thing really. Just some thoughts FWIW.

I was thinking about bi amping all of them. What wattage per channel do I need when bi amping? My Denon amp is 220wpc stereo, I believe. I never use it really loud, but if I connect another amp for tweeter it's not going to burn the speakers? And what amp and pre amp would you recommend in my situation?