Yep..that was me.
Mine did not work even after replacing both the tweeters. I called and got a replacement M80.

Makes me wonder if quality control needs to wake up at Axiom \:\)
Do they run each and every speaker on the test bed? Mine went bad after a year or so though.

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Samsung 65" 8500, xbox 360
Sunfire AV7702
Marantz AV7704
Sony UBP-X1000ES
M80s, VP180, QS8s, EP350