Looking for Sub to pair with Dynaudio Confidence 20s

As always try to get an audition.  I think SVS has some kind of trial offer? I have one larger sub but always wonder if I should have gone with 2 smaller ones. 

My Room is 13 x 19 I have had the confidence 20 speakers, and there was no need for a sub base. My room has a big picture window, hardwood floors with area rug. I also have some good room treatments. Very nice fast bold bass. Not sure what you have for an amp? I now have a set of confidence 30 Speakers, the base shakes my house. The difference between the 20 & the 30 speaker is huge. With the size of your room, you should buy a large floor stander.

to get a sub that can be subtle is probably a good approach. At least when you are not into shaking the room and your wig flying off

Thanks all! Open to new or used. <$5K

First, you want to get two subs not just one as the performance improvement is substantial.  For about $2100 you could get two SVS SB3000 subs that come with software that helps greatly with integration, and they offer a long trial including shipping both ways so no risk.

https://www.svsound.com/products/sb-3000
 

Or, for a little more $ and even better performance but with no integration software you could get a couple Rhythmik F12G subs…

https://www.rythmikaudio.com/F12G.html

Either way you’ll be in great shape.  Best of luck.