Sub suggestions please

I own the JBL Classic speakers and the bass is not that great,, specs put the bass response at 40hz.  I am using a SVS 2000 sub and it works wonders.  JBL makes subwoofers to compliment the L100 speakers starting at $600.00.  They did not make them when I bought the speakers in 2020. They are designed to work with the JBL speakers.  Music Direct has 4 or 5 different JBL subs.  I would call them and ask for recommendations before buying anything. 

Thanks Stereo5.  I looked at the JBL L10cs that is in the same family as the L100 Classics, and they are on my radar.  I am afraid they are going to be a bit punchier than I'm looking for, and I think I'm nearly decided on the REL 98 -- looks great, and I think it may offer the sort of transparency that I'm hoping for.  The SVS was REALLY interesting to me, but I can't find it in the right finish.  I will use your recommendation, though, and talk to Music Direct to see what they have to say.  Thanks again!

Find some vinyl wrap on the web and cover the Klipsch with it, then save up for two of them 98’s or the 99’s even. Life needs to be lived.

I have a pair of Volti Razz horn speakers. The bass is pretty good in my room, but bottom out around 35-38 hz. Also, the bass is just a little - imprecise? I'm sure it is a room issue, not a Volti issue.

I decided to try a sub, to go just a bit lower, and to focus the pitch a little. My first try worked great - a KEF KC92. It is small, but very mighty. Two woofers, both facing outwards, each with its own 500 wpc amp. It has clever DSP settings that really worked in my room. And the blend is better than I hoped. I love its size, it wonderful tone, and the fact that it is easy to blend with the room and with the main speakers. 

I'd take a listen, if you can...

See if you can swing two SVS SB-2000 Pro.  The app makes adjusting them easier and having two should reduces node and dips.