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December 15, 2012 - 6:49pm
#1
Voice coil rub on JBL LX44's. Can I fix it with a refoam?
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a refoam will keep the voice coil within appropriate tolerances.
If it's hitting it may help. If there's a buzz at a certain resonance, that's a rub. It's a warped coil from overheating. Usually from underdriving a less sensitive driver. As soon as I have the cash I'm sending all 4 of the woofers on my B&W's to Miller sound. 2 are bad and 1 is suspect. Miller is recommended by both B&W America and most people I talked to. They are fairly cheap and really fast.
Once the voice coil has scraped, it is almost always irreparably damaged.
I strongly advise you to get a whole new driver from JBL If it is no longer available, they can probably supply a suitable replacement, but if that is the case you will have to replace the same thing on both speakers to have matching performance. Talk to a JBL engineer about it.