Realistically there are only two locations in my living room for a sub. One is in the back corner next to the little half wall that divides the living room from the breakfast nook area and the patio door. This location is where there were already unterminated RG6 cables and I had them terminated with the intention of putting the sub there. The sub would be directly to your right side, about 4-5 feet away, if you were sitting on the main couch facing the TV wall. The other location would be to the left of the TV.
So here's the issue: I need an end table at that location. In the picture below I've placed a table that usually is in my small middle bedroom so it is not the exact one that will go there, but as you can see it has a lower shelf. If the sub were to go there, it would be placed on that shelf. Now I can go out and look for a similar table that has no lower shelf, but most I've seen do have one. What do you think about placing a sub there, sort of 'inside' the end table?
The space available for a table/sub is ~24" wide and I am currently leaning toward the SVS SB-12 Plus which is barely more than 13" cubed.