This may not be relevant, but when I plugged the rear port on my M3s that are on stands in corners that were excessively reinforcing the bass response, the sound cleaned up dramatically.

I was able to completely remove the EQ from the bottom end & run them flat from my receiver. So, at least in my case, port plugging worked exceedingly well & I don't perceive that I lost anything except all of the muddiness...

TAM

Last edited by exlabdriver; 08/31/14 07:20 AM.