Subwoofer

I’d go with a company that’s more dedicated to making subwoofers.  The SVS SB1000 Pro is $500 and will get you down to 20Hz (-3dB), and they offer a generous and truly risk-free trial so you can see if they give you everything you’re looking for.  Best of luck. 

Thank you..so SB1000 Pro would be good for low levels?

There are a number of challenges in getting satisfactory bass response beyond the brand of subwoofer.  I wrote about them here:

https://speakermakersjourney.blogspot.com/2020/04/how-to-not-buy-subwoofer.html

Thanks a lot..