We have stamped metal baskets as opposed to newer models that appear to use cast baskets/frames on drivers. A thought occurred to me as I was poking (not literally) around the back of my M3 Turbo S. The wide, stamped metal may be- I don’t know- prone to ringing.
Since it is outside of a traditional box, it may be audible. I’m going to try some Mortite- similar to BlueTack, to dampen the frame. Has anyone else thought or acted upon this? Again, I’ll say, I have not heard ringing, and love the sound, but I imagine it can’t hurt. I originally thought of using Dynamat, but it’s rather expensive, and uses adhesive, making it difficult to remove if there’s an unforeseen deleterios effect.