JR (and Don),
Sorry to pick on Peavey, they make good products at good values.
I probably should not have made the comment I did, since I can’t even remember the model number of the one Peavey I bought, and it was a long time ago.
I can’t seem to find anything on line now that looks like what I remember the amp I bought back then, but it may have been badged PV.
Back in 1993 I was down to only two old power amps, a Yamaha P 2200 and a Crest 2500. The P2200 was rated at 350 into 4 ohms, the Crest less, and I needed more power for some subs that went low but were not very efficient.
The Peavey I bought was rated at around 600 at 4, and 1000 at 2, IIRC, so I figured it should be a noticeable step up in power. I found what appeared to be a MI quality amp with a two ohm rating unusual for that time.
My brother had had a ton of CS 400 and CS 800 in rentals for years, and they worked fine, so I figured hey, I’m just working with a jump blues band, should be OK.
The “new” Peavey seemed too light for a 1000 watt rating though, weighed less than a CS 800 or the Yammie, though I don’t think it used a switching power supply. It seemed more in the CS 400 or Crest 2500 weight range, and as it turned out, usable power range.
Anyway, the Yamaha P2200 put out significantly more SPL with no indicated or audible clipping than the “new” higher rated Peavey model. Fortunately for me the Peavey blew up on the second gig and I was able to return it and get my money back.
Perhaps it was never putting out what it was supposed to, but I suspect what was happening was more along the lines of what you described with the CS800x taken to a further marketing extreme for a market segment that does not spend much time looking at specs.