138dB at 100 feet!

Circlotron · 16th July 2004, 11:22 AM

http://www.victorysiren.com/x/index.htm

kelticwizard · 16th July 2004, 12:02 PM

Ouch!!

I hope they mount that thing at least 100 feet up in the air. I'd hate to get closer and have the dB's go up even more!

Just for the heck of it, let's see how loud it would be at the normal one meter distance.

Using the traditional formula of: doubling the distance from the source results in minus 6 dB. Or, of course, halving the distance from the source results in increasing 6 dB.

So 138 dB @ 100 feet =144 dB @ 50 feet = 150 dB @25 feet =156 dB @ 12.5 feet = 162 dB @ 6.25 feet =168 dB @ 3.125 feet, which is close enough to a meter.

Hate to be standing in front of that monster when it goes full power, lol.

Cal Weldon · 17th July 2004, 02:45 AM

168 dB=Electro-acoustical de-boning.

Cal

16th July 2004, 11:22 AM	#1
Circlotron diyAudio Member Join Date: Jun 2002 Location: Melbourne, Australia	138dB at 100 feet! http://www.victorysiren.com/x/index.htm __________________ Best-ever T/S parameter spreadsheet. http://www.diyaudio.com/forums/multi...tml#post353269

16th July 2004, 12:02 PM	#2
kelticwizard diyAudio Member Join Date: Sep 2001 Location: Connecticut, The Nutmeg State	Ouch!! I hope they mount that thing at least 100 feet up in the air. I'd hate to get closer and have the dB's go up even more! Just for the heck of it, let's see how loud it would be at the normal one meter distance. Using the traditional formula of: doubling the distance from the source results in minus 6 dB. Or, of course, halving the distance from the source results in increasing 6 dB. So 138 dB @ 100 feet =144 dB @ 50 feet = 150 dB @25 feet =156 dB @ 12.5 feet = 162 dB @ 6.25 feet =168 dB @ 3.125 feet, which is close enough to a meter. Hate to be standing in front of that monster when it goes full power, lol. __________________ "A friend will help you move. A really good friend will help you move a body." -Anonymous

17th July 2004, 02:45 AM	#3
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	168 dB=Electro-acoustical de-boning. Cal __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

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