bratlever

I've constructed a home theater built around 3 khorns front with heresies for sides and rears, and a custom sub using an 18 inch klipsch woofer. The sound is what I expected. Good. I feel there is some harshness or glaring in the bass end that can be improved though. I'm thinking about maybe deadening potential reflections with bass traps. Anybody have any ideas about how to work around the corner bass reflection situation with the K-horns?