Are Sub JBL Speakers good?

Are sub jbl speakers good? and which one is the best? Can anyone help me?
I think JBL is a fairly well-known speaker brand in the world. Choosing the right speaker for JBL is always the best.
If you are talking about the best Sub speakers, you should choose this speaker: It uses a Power Converter (AES 2 hours) 2000W up to 8000W peak. To be more specific you please provide the requested capacity?