Speakers for audiolab 9000P & Q

I've got the Audiolab 9000 setup.  I have Klipsch Heresy IVs and a Paradigm sub (to lazy to see what model at the moment).  The Heresys sound muted, not sure why.  Had them before the current set up, still sounded the same.  Moved them into different locations, as much as possible.  They sound good, just kind of muffled.  Obviously I'm no expert, just trying to see if they're even a good match for this set up, and if not, what might be.