Hi Murph,
Heh, heh, heh, indeed. It's an interesting topic. From the evidence so far, there is no perfectly acoustically transparent screen material, and certainly conventional perforated screens can cause all kinds of nasty colorations. There seems to be some reasonable evidence that woven screens are superior to perforated in reducing various problems but I'll wait until I can see some indenpendent measurements and conduct some listening tests.
It's a subject worthy of investigation and one that I'm sure we'll consider in the future at Axiom. However, until really good evidence--not sponsored by a screen maker--is in, my advice is to avoid putting loudspeakers behind perforated screens if at all possible.
Regards,
