Looking for Sub to pair with Dynaudio Confidence 20s

Rogersound Labs was the first company I heard that had a subwoofer back in 1974.

I have a pair of their 10S Speedwoofers and they pair really nice with my towers. I gave the 10S Speedwoofers a try first due to having transmission line design to go lower in a musical fashion.

The 12S Speedwoofer has come out and it is very highly thought of. They are a company that will let you try them out and pay the freight to return [at least they did when I was delivered my pair of 10S]. I didn't send them back.

Thank you!

Have you considered Dynaudio sub 6 ?

Thanks all for great input. Given my room, leaning toward the JL E110...

Thanks!

 Im running a Rel S510 stereo pair with my C20s right now in a room 18x15...They just had a price increase so over the 5K bench mark new  but used you could do it..I would not mess with their entry X series..Easy to integrated and no need with all the room correction and  the multi phase chatted about above on other makers.If you want to spend more Id go with Perlisten.