Thank you for confirming the amp. My parasound NC 2125 v2 actually has 2-3 ohm tap and HPF with either 20hz or 40 hz cutoff. When I switch from 4-8 ohm tap to 2-3 ohm and select 20hz HPF, the bass weight seems to improve a bit. When listening to Yulunga by Dead Can Dance from Wake, I seem to getting more satisfactory drum/bass. I am not sure if this is psychological but the amp runs much cooler for sure which is a good thing. It is even cooler than the class D amp I have.
Regarding the placement close to wall, I will try that again and let it sit there for a longer time to see if I like it. One issue I am having is that I actually do not have "front wall". What I have is the blind and heavy curtain. I have used that combination for taming the rear reflection. Maybe that is why I was not getting more bass as expected when I tried last time as @dwest1023 and Buchardt have suggested. Right now, the PR is 22 inch away from the blind and about 15 inch away from the curtain.
@kokakolia
I am glad OGY / TL works for you. I recalled the port shuffing from one of my earlier bookshelf, Elac DB6 (the one with the rear port before AJ moves it to the front for the 2nd gen.) even cause pain in my ear drum. I switch it to DB62 (still have them) and like them (but not in love).