As Ryan mentioned, every room is different. That’s something to keep in mind with any of those Youtube videos you see – they are only useful if have a room that’s very similar to theirs.
It escaped my notice previously that your new listening position will be in the dead center of the room. Often the center of a room is a “bass hole” with the lowest perceived level of bass. You will find that bass levels increase as you move from that location towards any wall.
So, you might indeed need that second sub. Your previous seat was against the wall, which is typically where bass levels are the strongest.
Analyzing people’s frequency response graphs for their subs for over 15 years now, I’ve consistently seen that locations in or near corners with uninterrupted walls in both directions gets the most output, the lowest extension, and the best frequency response with no nulls. I can probably count on one hand with fingers left over the number of times I’ve seen that a corner just did not work. The primary issue with corner placement is a peak in response that will make the sub “boomy,” but that’s an easy fix with parametric equalization.
In fact, virtually any sub system in a residential setting will require equalization for optimal performance. If you don’t want to use EQ, then experimenting with placement is the only option. You will probably be able to find a location without the “boom” you get from a corner, but the compromise will be reduced output and extension, and probably a null or two.
Not that’s the end of the world. My current living situation did not accommodate a system arrangement that included a good corner for the sub. So, for the first time ever I have a null. Fortunately, it looks worse on a graph than it actually sounds. I haven’t really noticed it at all.
By the way, with a $100 calibrated mic and the freeware Room EQ Wizard, you can take accurate frequency response of your sub in any location you might consider locating it. Takes the guesswork out of it.
Regards,
Wayne A. Pflughaupt