I would replace the speakers. If you like lotsa bass try something like the Von Schweikert VR-3 or VR-4. Keep the Acurus stuff even if it just gets relegated to second system status.
What to buy
I am finally getting my own listening room and looking to upgrade my speakers.My room is 17'x13'x11' with french doors on one 17' wall. Somewhat of a bass junkie with a strong affection for the female voice. Looking to spend between 4-5k. Live in Houston where the selection of high end is exceptionally limited. Need some suggestions