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Old 01-23-2009, 11:47 AM
 
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many years ago, i was in a local shop listening to the various subs. in the corner was a box with a single 10'' orion (i belive) mounted inverted, with another 10'' hole next to it as a port.. i know thats not alot to go on, but i think they called it a 'reverse megaphone'.... anyone heard of this sort of thing? it waas mad loud
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Old 01-24-2009, 12:10 AM
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Never heard of it, how deep was the hole? Just an empty 10" circle the same depth as the wood?
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Old 01-24-2009, 12:12 AM
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Just found this on a google search, it's from home audio. Could it be effectively the same design?

"...the midrange rear wave fires into a reverse horn internally damped by a user-adjustable foam wedge, intended to kill reflections inside the horn from causing the horn-throat colorations collectively known as the Megaphone Effect."

Edit: Here's the site it was from VMPS :: Ribbon loudspeakers subwoofers
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Old 01-24-2009, 10:37 AM
 
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it was just a rectangular box. the top piece (where the sub was mounted) was prolly somewhere around 12''x 24'' and there were just two 10'' holes, one with the sub, one a port... it was a pretty tall box, i would say somewheer around 4'.... i dont know ANYTHING about how it was baffled inside
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