Musical subwoofer under $2000


I’m looking for advice on what vendors to look at as l’d really like to add a subwoofer to my 2 channel setup. The room is c. 30x15 feet or 42 square meters with low ceiling of about 7.5 feet or 2.2 meters. Budget is c.$2,000 and my 2 channel speakers are Sonus Faber Sonetto VIII. My amp offers pre-out connection. I’d like REL but their S range is now too expensive, so something close in musicality would be great. 

sparksgja

To better understand what you mean by a "musical" low frequency producer.

Imagine you had two units at your home for audition individually during the same session. They are both properly positioned in your spacious room and adjusted to a point were you can not discern were the speakers end and the unit takes over the low frequency output.

Played individually turning each one off, its apparent one displays a noticeably greater sense of extra low frequency fullness (not loudness) of your main speakers presentation than the other. Which units presentation would you consider to be more musical?

First and foremost, I’d recommend getting two subs instead of one. In your price range you can get a pair of SVS SB2000 Pro subs that’d likely sound great in your system. Best of luck.

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

You want punch in the gut tight bass? 
or blend just a little something down low? 

Thanks for the feedback on looking at the SVS sb-2000 pro and going for two. As for musical I just meant I wasn’t looking for home theatre sound but just a sub for use with music, so not boomy or obvious apart from adding low end that isn’t fully there with the SF. I’ll definitely look at the SVS.