Mike (Sparkydude) Graciously took the time to Snap a few Room/Set Up Photos to send to me.
So...it looks as though we're going to get a bit of a Head Start on our proposed Saturday Project.
Sparky, your Room is very nice. Quite Cozy!
I understand that from a "Shared Use/Family" standpoint, we cannot always have everything we wish. So to that end, let's work with what we DO HAVE.
* Are those Spendor Tweeters aimed at your Knees??
Let's get those Speakers tilted backward a bit so that the Tweeters aim at the Ear Level.
*Corner Loaded Subwoofers.
This is typically the placement for STRONGEST Bass...not necessarily the most Linear Bass. I would encourage that We begin with a Sub/Mains Level Matching Exercise.
Play a Cal signal (Pink Noise) through the mains ONLY at 75-80db. Without changing anything...play that SAME SIGNAL through the SUBS ONLY. Adjust the Sub levels to match that recorded by the Mains. Now our Mains and Subs are on the "Same Page" Levels-Wise.
Addendum: Mike, as your Subs are positioned in a Diametrically Opposed Fashion, may I suggest we do the Level Matching exercise ONE CHANNEL at a Time. I don't want to cause a Channel imbalance, etc. Further, as the Path Length differences from each Sub to Ear are so Wildly different, don't be surprised if one Sub has a "best" phase / level setting different than the other. We"ll conclude this whole thing with a Sweep of BOTH CHANNELS at the MLP. Just to see if we mucked anything up...
* Note: Perform these Measurements with your Mic PRECISELY at the Listening Position. Please don't move the Mic at all between tests. It matters!
Following that whole ordeal, We need a Sweep that concentrates on the Region of the Subwoofer Crossover Freq. ANY BS (ie: Deep Notches) in the Crossover area suggests that additional adjustment...usually on the Subwoofer itself is in order! Let's do this Test one channel at a time as well. Honestly. We could EQ ourselves into the 7th Circle of Hell with a Subwoofer that is incorrectly Polarized to the Mains.
For this installment of my Jabber...Let's limit our Test Range to a limited part of the Audio Spectrum. Let's say...30-500hz.
As Low Frequencies are typically the most problematic, Let's focus there, and bypass the Ear Piercing Shreeks of HF tones. For now! We'll get there...little by little.
We gotta start somewhere!! If we can just mitigate One or Two of the most troublesome issues, then we've succeeded in moving you a bit closer to enjoying your Music Collection via the ADI-2 DAC like never before.
All the Best!