Now I can see your chart.

And I'm sorry to say that is f*ed up. Wow. I have hardwood floors + rug, too, but I've never seen freq. resp. like that in all of my testing.

Dude.

---- A Woofer in Tweeter's Clothing... M60s, VP150, QS8s, EP350 Onkyo TX-SR702, Denon DVD-3910