Subwoofers - Grille off or on?

Stan some speaker grills have built in tuning material for the tweeter for example. If a grill does in fact attenuate the treble some speakers may infact be made with a hot tweeter to account for the grills. Its matter of opinion and personal choice but it is not fact.
I dont like the look of speakers with grills off, reminds me of college kids for some reason but I also dont hear a negative in sound so that works for me, others like them off and thats cool too.

I used to think speakers sounded better with the grills off, but I've changed my ways. Now I like the sound better with grills on, but I find it hard to believe it would make a difference on a subwoofer.

You nailed it Albert.The "always" makes the statement null and void!!

Statements that use the word "always" without qualification are always wrong. :)

-- Al

A very pretty paradox as Gilbert and Sullivan would say.