Marvel Posted February 11, 2015 Share Posted February 11, 2015 he question I ask myself is: Has the foam surrounding the cones on the Woofer lost its flexibility, or become too flexible over the past 35 years?? It's not foam. The K33 woofers use a clothe surround. You might want to rotate them, but it is probably not necessary. Bruce Quote Link to comment Share on other sites More sharing options...
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