I once owned a pair of Krell Resolution 3s, that had stretchy "string" grills. I discovered, with the help of a spectrum analyzer, that the speakers response was flatter in my listening room with the grills on. Go figure.
Grills ON or Grills OFF?
With my Signature S2s, I prefer to listen with the grills on. Even though the highs are ever so slightly rolled off (which, with this speaker is not necessarily a bad thing), the dispersion and the ability of the speakers to disappear is better. Plus, I like the protection factor. How do you conduct your listening sessions, and why?