my Jbl 4313's sound "cracked" when heavier bass is being played......They surrounds were replaced not too long ago and appear ok from the outside.....tried other sets of modest type speakers and they don't break up at all.......any thoughts?
Take them to an authorized JBL repair center and have the cones replaced. I use Eastern Cinema Supply in Mass. The repair kit has cone, voice coil, surround as one piece. Like brand new!
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