Digital Room Correction vs Room Treatments

Just wanted to update the thread about the results of playing with the listening position based on suggestions from forum members (on another forum).

The suggestion was to follow the rule of odds in speaker and LP placement.  This resulted in putting my speakers with front baffles 37" from the front wall (1/5), 28" from side walls (1/5), which placed them roughly 80" apart.

The original suggestion was to have my listening position (LP) 5'/60" from the rear wall.  I took a FR measurement there.  But this LP moved me pretty far forward from my Atmos centered LP, so I took some additional measurements moving further back toward the back of the room in ~6" increments.

If we zero in on the 55-60Hz dip as a reference point:

The blue (lowest trough) is the 60" off back wall LP
Next higher green line is 52"
Next two higher lines (purple and bolded yellow) are ~46" (I tried to replicate this with a second measurement later, was probably an inch or two off from original position, but it's close)
Highest brown/gold line is the near-original 40" off back wall LP (I think I originally started at 38")

My observation is that the LP doesn't much affect the 35Hz or 95-100Hz peaks - they're pretty much there and similar in magnitude regardless of LP within this range.

The 55-60Hz dip though is pretty heavily influenced by LP with it filling it more the further back the LP moves toward the back wall, but this comes at the expense of creating a new dip at ~180-190Hz, which isn't as deep as the 55-60Hz one, but it's definitely a trade-off.

Based purely on this comparative FR curve, I think I like the bolded 46" off the back wall response the best. It fills in the 55-60Hz dip to within -3dB and keeps the 180-190Hz dip it creates to within -3dB as well.

So if I stick with this, I just live with the -3dB dips and experiment to see if there's anything in the way of reasonably priced room treatments to reduce the 35Hz and 95-100Hz peaks.

Does this seem like the best compromise and an overall "good enough" room environment to not have to spend money on expensive room treatments or digital room correction?

I personally have found that digital room correction does a lot more than room treatments, but I listen to digital sources primarily and the OP is mainly analog.  

IMHO treat the room before you treat the music. 

you are mostly analog so you have to go a to d dsp then d to a  I can say that on my system my mini dsp HD adds noise  

I have a heavily treated room and have played with dsp below 90hz. It won’t address a dip.  Some tracks sound better others don’t. 
 

good on you with the Aerials. I have 8b which are on the secondary system, main are IRS Beta. 

Bass was a constant issue/problem for me when I had larger (mostly full-range) bass reflex speakers. Switching to still large but somewhat lower range limited (down to 40 Hz) acoustic suspension speakers with dual large’ish subs gave me tremendous flexibility to tame bass response issues and resulted in much better sound across the board.

For you folks implementing active correction, once you do the evaluation, how is the active correction implemented physically? Do you need to run the signal through a DSP device? Doesn’t that add noise?  I do not see too much about active correction in these forums but maybe I haven’t been looking.

I'd never use dsp on an all analog system, except for subs which is practically a necessity. My experience is all the dsp software I've tried has negatively altered the presentation such that it sounds less 'natural'. Roon dsp atrocious, HQPlayer much better, still, prefer room treatments in my dedicated room.