Indeed - I made a fiberglass screen "shield" around the 2 woofers to keep the fill from getting into the speaker proper.
Actually, I switched from polyfill to a measured amount of raw lambswool, based on feedback from my audio guru,
who explained he'd had significantly better luck with lambswool.

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Quote Originally Posted by badman View Post
Old post BUT!

If you're still using these, or anyone else will be, the polyfill situation should be adjusted. You definitely don't want the batting between frame and cone, and even moreso between cone and leadwires. This will lead to extraneous noise and distortion and even driver damage. A mesh or "net" around the back of the driver will keep the poly from getting where it doesn't belong (or use a different material that is more cohesive).