OK, so mine lasted two months. The panels on my Sequels are now officially dead after having come back alive very well (they're still listenable, but at low volumes). I am now back to square one. I still do not want to invest in expensive panels ($2600) on speakers that are 33 years old. I suppose ML has improved the rest of the speaker over the years, from what I have read, so now it's a toss between spending $5000 on a new pair of MLs or switching to Maggies. Your thoughts are welcome, thank you.
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I had him repair mine. I would say they are about 80% the performance of brand new panels, and it cost me a very small fraction of the price.