The siren you are talking about is measured in A-weighted dB ratings instead of C-weighted dB ratings like we are used to. To answer your question, yes, they did use a different way of measure sound output. There really is no direct conversion between them either. In order to get a dB(C) rating, they would have to use a device that measures dB(C) instead of dB(A).Batman wrote:I have a question. Do they measure decibels differently in Europe? I went to KM Europ's website (http://www.km-europ.com/index.php?optio ... Itemid=242), and they have a siren there that says it puts out 147 decibels!!! Since Wikipedia says that the loudest siren ever (The Chrysler.) puts out 138, I assume that they measure decibels a little differently over there. Sort of like Metric versus American measurements. Is that right (I get the feeling that was probably a stupid question, but what can you do?)?
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Does anyone have pictures of the CTIs? I couldn't find any. Thanks for the ratings though. I'd like to get more ratings for older sirens, since most of the ones I have now are currently available models.
By the way, is there a reason that ATI doesn't give decibel ratings on their website?
By the way, is there a reason that ATI doesn't give decibel ratings on their website?
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I remember they used to have decibel ratings on their website. I think the HPSS16 is 121, and the HPSS32 is 126.Batman wrote:By the way, is there a reason that ATI doesn't give decibel ratings on their website?
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at 10 ftcarexpertandy wrote:I think the HPSS16 is 121, and the HPSS32 is 126.
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I mentioned the 812, and that I remembered seeing a brochure for it and the 408, showing the 408 being 128, and Dane County getting 124 out of their 612s, and the 612 is the model between the 408 and 812, so I highly doubt the 812 is actually 132.
Resident of a county with big a mixture of sirens, but in the process of being replaced.
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