I have a pair of Monitor Audio Radius 270 floor standing speakers. Each driver in the speaker has its own metal grill that presses into a groove around the circumference of the driver.
About two years ago, my then two year old, took the grills off the shiny tweeters and pushed the tweeters in. I can purchase new tweeters for $100 a piece. I think my now 4 year old is old enough not to mess with them but just in case, is there any reason I should not affix those grills in place with some kind of glue?