SVS or REVEL Subwoofer

Whatever brand you decide and especially because you’re using the sub for 2-channel music I’d recommend getting two subs.  You could get two SVS SB2000 Pro subs for under $2k that will get you down to 19Hz (-3dB) and would be good for both music and movies.  They also come with an app that allows you to dial in the subs from the listening chair using your phone, and they offer a risk free, 45-day trial including shipping both ways, which is also nice.  Not too familiar with REL subs but not sure you’ll get down to 20Hz with them at your price point if that’s a concern.  Best of luck.

https://www.svsound.com/products/sb-2000-pro

@soix 

Thanks for suggesting two subs.  I never would have thought of that approach.

I would agree with soix that two subs are really better than one. But my experience with SVS was not great. After several years my PB12/NSD2 stopped working. It was out of warranty but I wanted to get it fixed. SVS didn't want to fix it at all. They wanted me to buy another subwoofer from them. In fact I offered to deliver the non-working subwoofer to their doorstep. Nope. Of course you can buy whatever sub you like. I say choose wisely. That was my experience with the company.

Thanks for all your input.  My local dealer has offered me a great deal on a B&W DB2D.  It meshes perfectly with my B&W 804s.  Way over my budget but hard to turn down, maybe.  More to come.