Pete, I’d agree with your comments. If you read my advert on eBay I said “lightly filled”. In fact, the speaker chamber is broken down into 3 volumes with two internal ladder braces only 2 have fibre filling. The top speaker volume just as a “bit” of damping and the port volume just to discourage “kids” poking objects down the port!
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I auditioned no-fill and light filled combinations and the latter helped tamed the metal cone “analytical” presentation. I’ve found that such filling doesn’t have too much effect on a bass reflex design.
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Due to the physical build of these drivers it’s quite easy to workout the maker and model.
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Great to see there’s another speaker builder hanging out here … love to see some pictures of your projects.
