Subwoofer for Wilson Maxx2

Try room treatments 1st.

My bass improved after treating for bass and I have a watchdog I don't use any more. Maxx 2s in a similar position to yours in almost the exact same size room. Went through the same thing as you. Moving out into the room gives the best mids & highs but the bass impact goes down. Yes you can use a subwoofer from 35Hz down but 1st treat the room with bass traps. I understand you treated it for 1 or 2nd order reflection but bass traps in the corners actually increase bass resolution and will probably demand a slight change in speaker placement. Trying to save you money. If you are a DIYer you can make your own bass traps for near nothing.

I have almost the exact same room as you. Yes the speakers are much better further out in the room. I wouldn't listen to others as the Maxx rear port is a big part of why coming off the wall helps. A subwoofer will help as well. But 1st please treat the corners. It makes a huge difference. I can send you pictures. of my setup if you want. Tuning the subwoofer is not that easy and most listeners prefer it off. That is with a Watchdog 2. You want to buy mine, I will gladly part with it. I don't use it. That should say enough. I am using VTL 750s which have very nice bass control and the sound is magical.