grilles on or off the speakers??


As most of you are aware, there are a number of speaker manufacturers that claim a "specially designed" grille for their speakers, that prevent edge diffraction and whatever and do no recommend they be removed.

Since no women were inviting me to the Caribbean, and having nothing better to do, I decided what the heck and put the grilles back on my speakers. I anticipated no effect, but they sounded different. They went on and off several times, and there is clearly an auditory diffence...not necessarily better or worse either way...just different

SO, what do you think, grilles on or off, and are specially designed grilles snake oil or science??

Thanks
rsasso
To LoomisJohnson,

Yes, there are Totems and Revels that don't include the grilles, and others like Paradigm with their "specially designed grilles" and don't recommend using their speakers without them. That is why I was interested in the group's feeling on grilles, and their experiences.

Thanks for your input
Are Stereophile speaker measurements done with grills on or off? Do they say?
Let's muddy the waters even more. When I first took the grilles off my speakers (and this was after having them for quite a long time), I found foam plugs in the four (2 per speaker) vent ports at the bottom of the speakers. These are apparently used for shipping.
Taking those out, I found the speakers too "twangy" and singing voices a bit shrill. The bass lost some of its tightness, and the soundstage became diffused. Grilles on, grilles off...still not right.
So I jammed the foam plugs back in, and all is well. They sound great again.
Comments??