I know basically nothing beyond what I've read...I put sound in the 308 years ago but a coworker picked out the parts for me, I've never even owned a home stereo. After spending way more than I had budgeted I have decided that no good comes from reading
This is the reviver
https://www.onkyousa.com/product/tx-nr797/9 channel and each has it own cross-over settings, equalizer and +/-12db volume adjust. The main speakers for the 5.1 are all JBL from the same series/set so meant to be used together, studio 570 fronts, 520 center, 530 rear, 550 sub. The 520 center is supposed to be specifically designed for voices and I will be able to boost that channel is needed
The height speakers to make it a 5.1.4 are cheaper polk in wall. We first bought 4 8" Yamaha ceiling speakers because dolby always shows ceiling installs for atmos setup and I 'm sure would have been fine. I decided to switch to the in-walls because I have beams across the ceiling that will interrupt and block things but more importantly I have 3 rows of seating and it just seemed like only the front row would get anything reassembling good height sound with the ceiling setup and in-wall are a susported atoms setup as well as prefered by other 3D sound formats so it just seemed a better choice. To do it though meant I had to go to the smaller 5/14" speakers to fit above the screen and into the rear beam....but they are claimed to work down to 67hz which seemed fine and again I can cross, equalize and volume adjust as needed so I'm hoping for the best and with wire and such I'm at right about $2500 on the $500 budget so one way or the other it has to be finished.