I bought a pair of Miller & Kreisel tweeters (model 17500 8 ohm) for a project. He sent me a free one, three in total. They arrived today and all three soft domes are damaged. He described them as NOS. These do not look new, even on the terminals. No solder, but clear scratches, like terminal connectors were attached. That, I do not mind so much. But the domes are a drag. I know woofer dust covers do not emanate sound. I have a feeling that tweeter domes are the media that drives the sound. I hope I am wrong. If they do drive the sound, how bad are these?