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kanazo
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Sat Feb 23, 2008 7:49 am

or could they be diaphone or other horns?
Greater Vancouver, 0 active sirens...
Adam Pollak
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Sat Feb 23, 2008 8:38 am

There are many acoustical devices that make use of either linear, exponential, or other shaped horns...everything ranging from sirens, to fog horns, to audio speakers.
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kanazo
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Sat Feb 23, 2008 9:15 am

Adam Pollak wrote:There are many acoustical devices that make use of either linear, exponential, or other shaped horns...everything ranging from sirens, to fog horns, to audio speakers.
according to the design principles of thunderbolt series, is the exponential shaped horn the best for amplifying and resonanting output sound?
Greater Vancouver, 0 active sirens...
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SirenMadness
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Sat Feb 23, 2008 3:33 pm

It could be anything, but it's unfortunate that we don't have a larger picture.
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EOWS812
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Wed Feb 27, 2008 5:57 pm

is it still in use? a recording of that would be cool
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