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mantraxl 12th February 2008 07:26 AM

T-line within vented cabinet?
I had a thought and wanted to see if i'm completely wrong or not.

A number of established vented designs have fairly flat response across the range, with the usual give-or-take 3 db. Suppose a design had more mid-upper ripple than down low, would it be possible to put short (say 3-4" or so) tapered t-line stacks coming off the back of the drivers inside the cabinet such that the resonance of the line cancelled the higher range unevenness (~1000hz and up), while the lower freq stuff passed thru into the volume of the cabinet normally?

I'm envisioning a hypothetical 6 1/2" driver backed by a 4"ish long tunnel that tapers from ~325cm^3 to ~290cm^3 at its exit

this would theoretically apply to tweeters as well, if theres uneveness there too.

How far out am I on this one?

mantraxl 13th February 2008 02:44 AM

No takers?
Well, then if no one has an opinion on this, then I shall have to move to the next steps. Time for detailed drawings and some real-life trial and error. :)

Ron E 13th February 2008 03:05 AM

Dude, you should make a line of speakers using these and call them coupled resonant absorbers. The idea is worth millions if you play it right. Better get a patent though....make Bose your beeatch.

mantraxl 13th February 2008 03:53 AM

Can I take that to mean that there are such things out there already? If so, I'd be interested to know which models are made that way.

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