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Speaker Still Crackling After Drying Completely

Why does your speaker still crackle after drying completely? How to test for voice coil rubbing, corrosion, and blown speaker cones.

If a speaker crackles during dry playback, the voice coil cylinder may be scraping against the permanent magnet pole piece. Play our 440 Hz pure tone below. If the tone sounds buzz-free at moderate volume, the voice coil is healthy.