Foam Plugs

I noticed that some ported speakers come with foam plugs.

In what situation would you use these? What results can be expected from using these?

agiaccio09-06-2009 12:38pm

rodman99999 Details Discussions Posts This discussion Message User 6,206 posts 09-06-2009 at 04:52pm Copy Comment URL Report Comment Edit Delete If the plugs are closed cell foam; the alignment becomes an acoustic suspension. If the foam is somewhat open; it will serve to partially damp the port's output.If your speaker's placement was say, closer to the corners of the room; they could serve to reduce any boominess that resulted.
buconero117 Details Discussions Posts This discussion Message User 2,311 posts 09-06-2009 at 08:08pm Copy Comment URL Report Comment Edit Delete ProAC provides plugs with some of their speakers, for the reason rodman99999 mentioned. Try is the best way to hear the difference.
cleaneduphippy Details Discussions Posts This discussion Message User 323 posts 09-06-2009 at 09:11pm Copy Comment URL Report Comment Edit Delete Basically, if you got to put your speakers near the wall or corners, then you'll probably need the "foam plug" to help tame the bass "boominess". Of course, there is a part of me that ask the question "why don't they make acoustic supension speakers anymore?". Seems to me, that you didn't have near the issues with speakers placement, back when "acoustic suspension" speakers were the norm.