To add a bit to this thread, I wonder if someone could post a picture of the back of the removable grilles. I have a pair of 1975 CWs and I'm planning on replacing the cane grille cloth. I would, however, like these to be removable. I am curious as to the cutout pattern Klipsch used on their later models.
I will remove the original trim and grille cloth, then I'll add permanent trim and the masonite panels. At some point I would like to veneer the speakers.
BTW, these are great speakers and I've found this forum to be most helpful.