OK La Scala experts... I have a question. In a online video shot at the Klipsch factory , they show a woofer being installed in the dog-house, and then in the next shot, they show a guy shoving in a big hunk of acoustical foam in before it gets closed up. I've never seen a foam inside the dog-house of any Klipsch La Scala, or even a La Scala clone, What's the story? Is this something brand new for the AL5?