Suggestions for 'filling the port' of bass reflex

Thanks for the suggestions...I don't want to completely cut off the port, then I'd have little bottom end. I'm stuck with them in the position they currently are, a little more than 1.5 meters/4 ft from the back wall. I think the Dacron suggestion will be the first try, being that it won't completely plug the port's...there are two, bass and mid-bass, speaker is a Jamo D450, which has turned into quite an enjoyable speaker for me (no, I don't plan on listing them soon).

Thanks once again, L'wood

Want a bit less bass pull loudspeaker out from wall or corner. Why mess up the tuning your designer choise. And if you think its wrong sell the loudspeaker.

Lots of good suggestions so far.

On a more humorous note, one of the recommendations of stuffing the ports on the previously very successful Radio Shack monitors with Linnaeum tweeters was to use tampons. The obvious side joke was that the speakers caused one's ears to bleed.

I've tried some loose bonded dacron like Rodman suggested and it did work...eliminated some of the bloom. Thank you for the suggestion...had to order it on ebay cos HomeDepot and such had no idea what I'm talking about

Fabric and upholstery shops generally carry the stuff, as it's used in pillows, quilts, etc. Glad that it worked for you. Happy listening!