Looking for Sub to pair with Dynaudio Confidence 20s


Hi! 20x20 room, looking for subwoofer pairing recommendations; 20x20 room, fair bit of glass with wood floors. Mostly audio, diverse tastes, will also play video/tv via 2 channel set up. Ideally, not a huge sub. Thanks! 

dmeltz

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

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.

how about 2-REL t/7x or 2-REL t/9x subs? For 2 channel systems these are some of the best sounding subs in their price range.

REL is famous for easy implementation with a wide range of speakers using the high level inputs. REL has a 60 day home trial with free shipping. I owned REL from the early 2000’s with Totem speakers

@dmeltz 

Hi, As mentioned previously you do not want to do one subwoofer, two is the minimum. 

You have smaller bookshelf speakers hopefully on stands. These speakers have the ability to perform acceptably in a room that large , but it is pushing it. In order to get satisfactory headroom you are going to have to remove 100 Hz on down from them and hand it to two subwoofers at least 12" in diameter (the drivers) via a two way crossover. The best are digital such as the MiniDSP or dBx Driverack. 

If you are handy the least expensive way to get started in subwoofers is to build them yourself from kits such as those sold by Parts Express. They even have a selection of excellent plate amplifiers although I prefer outboard amps for subwoofers. QSC makes excellent amps for subwoofers at very reasonable prices. You can get two subs, amps and crossover for less than you could buy a single high quality 12" subwoofer from JL Audio. 

If you go with one subwoofer using a low pass filter you will be very disappointed in a 400 square foot room.