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In Reply to: RE: if they were true 1/4 wave length posted by Penguin on August 16, 2014 at 14:55:04
If so, I agree. Those ports would be open or else no TL.
I've built two pair of TL woofer systems in my day, one pair of which I dug out of storage to use with my Beveridge 2SW speakers. Mine mimic the classic Bailey design as implemented by Irving M Fried. However, the shape of Duke's cabinet shown in the photo leaves open a question as to what goes where, but odds are that it's a TL, of some kind, IMO.
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The splash drivers face upwards and assist with soundstage imaging.
They work quite well too! Duke demonstrated the concept at RMAF last year and again at Newport- they had the speaker set up with a switch so the drivers could be shut off. The soundstage, while still good, is smaller and less focused without them.
I'll bet those do sound nice .... :)
Besides being one of the nicest guys in audio, Duke is also an adventurous and innovative manufacturer. I would love to hear those speakers.
True that.
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I was, and glad we do not disagree :), closing up the port with a driver would be a strange thing. If they are half wave length...well that would lead some interesting discussions about driving it from both ends.....
dee
;-D
True terror is to wake up one morning and discover that your high school class is running the country.
quote by Kurt Vonnegut
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