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What melted my tweeter?

We had a brief power flicker in the nighborhood and when I came home, there was a burnt electrical smell and a hum from my left speaker.
(I leave my gear on all day)

The tweeter makes no sound and is deformed, melted.
All the fuses in my amp are intact.
Speakers are under warranty but don't know if this will be covered.

I assume the power flicker is responsible but not sure.
I will be taking it in for service but thought someone here might have a clue what happened.
jeffjarvis

Showing 1 response by jcbtubes

jcbtubes
400 posts
 
Jeff,
Two possibilities, but they are simply guesses. It is possible that the amplifier (or even the pre-amp upstream) has been damaged by the power fluctuation. If the component has a high frequency oscillation or instability, then exposure to the high frequency energy for an extended period (relative to heat dissipation capability of the tweeter) can overheat and damage/destroy the tweeter.
The other is that the power spike resulted in a high frequency surge, that destroyed the tweeter in one brief event. The amp/pre-amp may or may not be damaged.
Good luck.
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