Originally Posted by bossobass
Since I had some of your previously posted FR graphs and L/T info, I thought I'd LYK that you have the same room gain profile all of us (who have posted enough data to extrapolate) have.
Here's a composite with:
a) The measured naked response, give or take a small enough variance.
b) The L/T you described earlier applied to the naked response, give or take some small data points.
c) The AVR roll off.
d) The amp roll off, from manny's spec. (Side note: The amp folks don't cheat like Ilkka, Seaton, Chase, et al. (+/-) 3dB is + (above 0) or minus (below 0) 3dB, not +0/-6dB)
e) The cumulative roll off (less the Mini).
f) The result @ the LP.
Your Room Gain starts at 30 Hz and is approximately +6dB/Octave. That's the same room gain profile, (+/-) 2dB, as My room, Ricci's, MKT's, etc., etc.
My advice: Lose the AVR.
You have quite a bit invested in a tweakable full BW subwoofer system with headroom to cover it all. Too much to let it be compromised by a non-SW-friendly AVR.
Since I only use my HT for MC music and movies and I use tweaks instead of smoothing EQ, I decided to try the new Oppo flagship as a preamp/player and shelf the AVR altogether. My L/T is flat to 2 Hz and the clone-type amps are flat to 3 Hz. That leaves only the roll off of the Oppo. That's not to mention the possibly SQ jump with Oppo's ESS Sabre reference DACs and the playback choices; SACD, DVD-A, etc., etc.
Here's what your result might look like if you opted for such a change:
I've been sayin' it for a long time; signal chain is the culprit that's always mistaken for "my room has lousy room gain".
I'll post back when I get the time. We did measurements of the mains and subs, close mic and at the LP as well as zoomed SpecLab caps with music and movies of the existing signal chain vs the one I just described. Interesting stuff...