I wanted to experiment with stuffing my Shiva sub (3cu ft tuned to 19Hz) With polyfill stuffing. I stuffed the box with approx. 1.1 lbs of fill and turned the sub on. The output was terrible. The port wasn't blocked, I left little space from the fill. I'm curious, how do you properly fill a box? I just took a hand fulls of it and jammed it into the box and every crevise between the bracing and port and everything, it was pretty packed in. Is there a special way of doing it? Do you have to keep it away from the sub itself or the port? Any info would be appreciated, thanks.