I finally finished my first DIY project, I'm in the process of covering it with fleckstone, I've already used like 7 cans of it, gets pretty expensive. I put like a 1/4 inch of polybatting around the sides but the glue didn't hold to good so now its just kinda laying in there. I'm getting pretty much was Ron was getting, a boomy, overhanging sound. My frequency response is fairly flat +/- 6 db. Would guys recommend stuffing it with say 8 lbs. of polyfill even though its ported. Its a 4' 24" (340L) sonotube. I guess that would lower the tuning wouldn't it, right now its tuned around 16hz. If all else fails I could plug the port. Is it true the bigger the sealed enclosure the tighter the sound should be? After seeing how much Ron was satisfied with his after the poly-fill it kinda made me jealous .