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Old 14th February 2013, 06:38 AM   #1
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Thumbs up Open-Baffle Subs – “Subwoofer Origami”

Did you guys see this?

A good overview of (I think) 11 dipole configuratuions

Subwoofer Origami

many ways to skin the cat

Thanks, John Reekie
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Old 14th February 2013, 09:12 AM   #2
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How could this be patented ie. 'ripole'. It's like a linkwitz w frame to me !
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Old 14th February 2013, 09:44 AM   #3
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I believe this is not a full engineering patent but more an industrial design patent, similar to what Apple used against Samsung, claiming their phone looked too similar to an iphone.
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Old 14th February 2013, 09:53 AM   #4
Elias is offline Elias  Finland
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Quote:
Originally Posted by gainphile View Post
How could this be patented ie. 'ripole'. It's like a linkwitz w frame to me !
Ripole has a side hole where the magnet sticks out, Linkwitz W frame doesn't have it. In patent talk they are completely different
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Old 14th February 2013, 09:59 AM   #5
Rudolf is online now Rudolf  Germany
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Quote:
Originally Posted by gainphile View Post
How could this be patented ie. 'ripole'. It's like a linkwitz w frame to me !
It's not about whether YOU see a difference. It's about the patent officer seeing a difference.

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Old 14th February 2013, 10:13 AM   #6
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Quote:
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How could this be patented ie. 'ripole'. It's like a linkwitz w frame to me !
They are similar but not the same. Axel Ridtahler (which is a very nice guy by the way) and Linkwitz were in contact when the Ripole came out. Send me a PM if you want to get in contact with Axel.

I do use 2 Ripole subs in a near field configuration.
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Old 14th February 2013, 12:40 PM   #7
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IIRC, John the author suggested that a Ripole is:

- the most compact dipole subwoofer,
- with lowest Fs possible

Though the radiation pattern moves away from a dipole

marrkus, do you think yours have those attributes?
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Old 14th February 2013, 12:55 PM   #8
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marrkus, do you think yours have those attributes?
Yes. You can't pack two 12" woofers any smaller.

Click the image to open in full size.
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File Type: png IMG_3344.png (543.3 KB, 723 views)
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Old 14th February 2013, 12:57 PM   #9
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Hi Markus, so the measurements were for a ripole, not dipole?
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Old 14th February 2013, 01:05 PM   #10
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Hi Markus, so the measurements were for a ripole, not dipole?
Which measurements?
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