Single Sub Position

Site would not take a link or paste but here is a raw link 

https://www.dropbox.com/scl/fi/xp3mik7u67j8k76wms1gh/sub.jpeg?rlkey=wrljj6ortf7q994pl0lfloluv&st=habojkuj&dl=0

I was never able to get decent bass at my listening position. Added a second sub and problem was solved.

Yeah i got another thread about that but i am a believer now that a single will het the hob done if its exactly the correct spot. The room geo really drives it. 

Single sub, with bass traps and EQ can often be fantastic.  We are often limited in not having great sub locations, or not wanting to add bass traps or EQ, so we get what we can.

Another, often overlooked solution is to dampen bright rooms.  A reflective room enhances the treble a great deal, so often turning that down not only adds clarity but lets the bass bloom. 

It is possible to be sitting in a null. Thinking it's the subwoofer but it could be your sitting location in the room preventing/cancelling good bass.

Did you try putting the sub back in the corner and sitting closer to the speakers? Are you in an equilateral triangle with main speakers? It's not always the subs fault.