Hello all, I am a newbie so I definitely could use assistance. My question concerns the value/lack of value in plugging a ported sub. My current one is the down-firing JBL PB10. I have no need for anything larger as my home is small and there are neighbors on common walls, albeit concrete cinderblock firewalls at that. My living room is small and fairly filled with furniture. This has made placement of the sub somewhat of a problem. I have two options: place it on the tile hearth of the rarely used in-wall firebox or behind the left front speaker in the corner. Both positions are on the left side of the room. I currently have it in the latter position but I am trying to find a compromise solution as to any booming effects. The level is slightly less than 50% and is +3 on my receiver after AVIA calibration.The sub is sitting on an unused video cabinet for now as I don't have any marble yet and my townhouse has thick carpeting. I know that some ported subs are made with plugs and the sonic results can be quite different when utilized. Does anyone have any opinions on either the usefulness of doing so or on what kind of material works best for this application. TIA. P.S. My own limited experiments with various plugs has shown a tightening of all bass and a seeming increase in musicality...but thats just my ears.