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Old 24th May 2014, 01:32 PM   #1
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Join Date: Jul 2010
Location: Western China
Default Lost a Bookmark

..there is a subwoofer, very large, OB? IB? I cannot remember the design or builder just an image of the photo in the thread somewhere here on the site. They were huge, 9 feet tall or larger, in a massive lofted room with some OB? setup for the upper octaves. A pair of them, perhaps in concrete form tubes?

I have searched in vain for 2 weeks but my Google-fu is not up to the task.

Perhaps this is a Nelson Pass or Linkwitz or someone similar project?...

I know this will annoy some here, but I simply cannot find the reference to this in my files or bookmarks, and my memory is poor.
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Old 24th May 2014, 01:44 PM   #2
ishiru is offline ishiru  Indonesia
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Location: Jakarta, ID - Nagasaki, JP
mitsubishi Diatone?
iono wat i do
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Old 25th May 2014, 02:36 AM   #3
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Join Date: Feb 2006
Location: Cascais
Easy, sonotubes.
Maybe this will get you closer...
Subwoofer Suggestions / Help
How To Make A DIY Cylinder Subwoofer (AKA A Sonosub)
NEXT-proaudio Portugal
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Old 26th May 2014, 11:37 PM   #4
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Location: Calgary on the Bow
moray james
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Old 28th May 2014, 01:47 AM   #5
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Location: Western China
thanks moray.

Yep, Pass' Ėl-Pipe-o" is it.
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