I think we've reached an end-point in home theater. Where do we go from here?
+1
Having gone from Marantz to Sony to Yamaha to HTP-1 to Trinnov over the last 5 years, I have had a chance to play with all of the modern room correction setups. While each step offered a noticeable difference I would still say that we are just looking at 15% improvement from the basic RC to the advanced ones.
Upgrading speakers has made a big difference but along those lines, the DSPs that worked best with soundfield processing also sounded the best in my non-dedicated rooms, which is why I preferred the Yamaha and even Sony over the Audyssey and the Dirac HTP-1 setup benefitted from having stuff like Bose 901’s in the rear.
What core HT features could we update that would make an e.g.: 4800H obsolete in the same vein that my 10yr old Yammy was holding me back?
None. It’s one reason why it’s more reasonable to get a higher end processor or receiver with expected long term support. Even if the 4800 and 3800 are similar in overall performance, you have to imagine that the Shirakawa factory is more likely to survive any downsizing of D&M due to the low end getting pushed out by soundbars versus the high end supporting higher asp’s.
Again, Sony VAIO PCs is the example .
If obsolescence happens in HT, I'd say it would be in the Display sector. OLEDs only have a limited lifespan by design
My parents had a flagship Sony XBR RPTV which continued to give great results even 15+ years later, despite lacking HDMI and only being 768p due to superb scaling and engineering.
I have a the 75” XBR X940E which still provides a competitive picture quality today 7 years later. However, if you look at AVSForum, the LED diffuser breaks around this point (although it happens seemingly more common with wall mounted versus stand mounted TVs, presumably heat).
I think if you avoid burn in, OLEDs will certainly last 20 years. I actually have the 7.6” Kodak OLED picture frame from 2009 and while the CPU is slow and resolution is limited , the screen is actually still working well.