Need advice on using subwoofer with Aerial 10T's

IF you are going to the trouble of getting a subwoofer, by all means get two of them. Bass is not monophonic, and besides that, the second sub will help avoid bass dead spots in the room and may very well make a good system great. Ask me how I know...EVERY time I have set up a system I have attempted to get by on one sub and when I added the second one it made a world of difference, it wasn't just noticeably better it was hugely better.

I had the 10T's in a 24 x 27' room for a while. They didn't suffer for lack of bass, in that they went remarkably low for floorstanders without any use of subs. I invited friends over to hear some demos, just to have a chuckle. I made playlists on Spotify honoring the speakers. 

Could they still benefit from a pair of subs? Undoubtedly. Let's talk budget. The room is certainly large enough. I only have experience with a small REL upstairs among audio subs. I did have a single SVS sub about 32 inches tall in that room for AV for almost 20 years.

The 10T's have been among my favorites in the house.

I used a JL Fathom F112 V2 with my 10T's and they worked amazingly well together.