What to change a systemic question

My set up is similar to yours in regards to speaker placement and distance and I have a Technics SU-G700M2 as well and I can assure you it’s not the integrated that needs to be replaced.

My listening space is smaller (10.5’ X 14.5" in a "room" that extends another 5’) but alas, no greenery in the corners. That shorter front to back wall is a factor in base reinforcement but I’ve had speakers that no matter what I tried, were a bit weak and thin across the spectrum despited all my efforts to better it. Even my JBL 4319 monitors with their 12" woofers had impact and dynamics but not that fullness I craved.

What made the difference are my Revival Audio Atalanate 3 monitors with "only" a 7 inch mid-woofer. Practically the same base but more fullness, musicality and body with no sacrifice in detail, air and ambience. It’s a match made in heaven for me.

I’m sure some here may tire of my recommending these speakers but they are the last ones I’ll ever get unless I win the lotto and then get a bigger space to accommodate their bigger brother, the Atalante 5.

All the best,
Nonoise

Buy high quality hearing aids with a music setting. 

Soix thanks for the recommendation I did go and purchase the SVS sb 1000 pro and it has filled in the base though the lowest notes have no detail.

  Couple questions — 1) Did you use the SVS app to integrate the sub and 2) Is the SVS still in the return period?  The SB1000 Pro is, as you know, basically at the bottom of their range, and what you’re looking for may just require a better sub. If you can return the SVS I’d recommend looking at the Rhythmic F12 or, if it’s in budget, a JL Labs sub as they both kick it up a notch or two or three in performance.  REL may also be well worth considering given what you’re looking for.  So sorry if I steered you wrong.  I feel really bad that you’re still not “there.”

Scott, Have you fiddled with the crossover controls? Both phase and crossover points? If not, I’d try that before I reached any conclusions. From looking at the manual I’d be interested in having a higher crossover point so more high frequencies pass and doing this I'd pay close attention to volume. FWIW, I’ve noted that many folks don’t realize that the sound of what you would consider to be ’bass’ includes higher frequencies and their presence is what defines bass as ’tight, having impact, etc.

+1 @newbee Very good points and certainly worth some experimentation if you haven’t already done so.