Fiberglass stuffing and vented magnets

[LineArrayNut]

anyone ever have trouble with stuffing enclosures with drivers having vented magnets?

ie. voice coils rubbing from ingestion of particles?

or is this an urban myth?

I've got 9 ft^3 to stuff, twice, and have access to free fiberglass...

[Andersonix]

No, but I have seen speakers that used fiberglass inside a cloth bag, presumably to cut down on the dust (and it makes for a tidy assembly, as you can staple the bag to the inside wall).

But I have also built speaker boxes with fiberglass without problems (except for a little itching). It would take a lot of fiberglass dust to interfere with a voice coil....

[speakerdoctor]

Acoustic research used to put a sheet of very porous creped paper behind their woofers in their boxes stuffed with FG. It was cut in a sheet large enough to fill in completely behind the woofer hole.

The paper was called Kimpak (now Versa-Pak) sold by Uline.com.
The Kimpak served 2 purposes. It kept clumps of FG out from behind the woofer cone and also helped filter fine bits of broken FG from getting into the VC thru the spider.

[Cal Weldon]

Old pillow slips work well to contain fiberglass.

[LineArrayNut]

it's a sandwich of 1/2" mdf and 5 ply 15/32" ACX arauco plywood
still have to do some bracing.

[LineArrayNut]

if i sand the plywood to a 800 grit smoothness, what type of finish would you recommend (and how much, ie. gallons?) they're 6 ft by 18" all sides