I think there is validity with that. I’ve been using a Flat curve for years, going back to about 2006. It’s only since using the MutiEQ app last January that I have been flip flopping. It mostly revolves around Dynamic EQ and bass which unfortunately sounds different on every soundtrack. I’ve been enjoying all processing off and EQ limited for a few months now and don’t think I’ll be switching back. It’s all trial and error with my dual sub placement and with DEQ off my bass was lacking but now that my subs are in their optimal positions I don’t feel like I’m missing out on the low end. Feels like I finally have a good balance.
Since my room measures well, I found that there has been a negative impact of the original Audyssey XT32. That was the original version with the flat curve. Dirac running on the XMC-1 with the curtain (correction) limited to 25Hz and below there was an easily perceived impact on the sound stage. The DSP processing was having an effect on imaging.
Many simply run these programs multiple times until they like what they hear . Nothing wrong with that but it is not scientific. Independent room measurements are can provide an objective view. Thus far, I prefer the results with targeted PEQ and REW over REQ.
In any case, I also like to have a pure path as a baseline to subjectively evaluate the effect of the PEQ/REQ.
For two channel, I use the Oppo UDP-205 to a Benchmark LA4 (preamp) connected to the AHB2's (in low gain mode) that drives the Salon2's.
This is the best my system has ever sounded. When I next upgrade my HT processors, I will doing a comparison with REQ and PEQ.
- Rich