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Old 10-30-2007, 04:12 PM   #4
j.nc
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I-S, the specs for the Thunderbolt 1000 say it outputs 125 dB measured at 100 ft.

Also for perspective, the cone is 56" long and the opening ~28"x29".

I think there used to be one on top of a building downtown. Wonder where others were located?
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