If you want an extremely transparent semi opaque black (spandex) grill cover, the material manufactured for the Soundlab speaker fits the bill.
I have a spare cover that would probably do both your speakers and have some left over. Let me know if this is of interest to you after looking at the other options.
I have a spare cover that would probably do both your speakers and have some left over. Let me know if this is of interest to you after looking at the other options.