Thanks all. I appreciate your responses.
Not a stupid question, dcmtwowner1979. I do have all that you mentioned on my preamp, however I was hoping to be able to control the amount/volume of bass going to my sub without affecting my main speakers.
Yogiboy, you just gave me an easy solution. I previously purchased a Schitt Sys, but ended up not needing it. It's been sitting in a drawer! Now I have a use for it. Thanks!
Thanks for the recommendations on the other subs (SVS and REL). I was not looking forward to replacing the sub I have, however I am planning on putting together another system so I will take a close look at these two.