Thanks for the responses.
I believe you that new subs are better but I would never hear the end if it from my wife if I bought a new sub.
The sub is more than adequate for my needs. When I watch tv it's typically after the kids are in bed so I can't turn the sub volume up as much as I would like anyways.
I have a couple of "newer" subs in my basement setup but for the last three + years I had the volume turned right down. This weekend I tried using them but have been having issues getting them to work so I can't even say if they are any better than my old axiom sub
