However, I’m not sure we share the same idea of what is enough bass.
Exactly! If you are having problems, it is well worth the cost of an inexpensive spl meter to know in a quantifiable way what your sub output is, both compared to others and to the rest of your system.
I think sub design concern is a red herring.
Edit:
I am very please with the sound I just would like a little more of it, and it is a huge space to fill.
well, that makes sense. You sound like the guys on the DIY forums that keep adding more subs for more presence. It is quite amazing how much woofage some people end up with and it does seem to make a difference to have more subs to produce similar output.
