HOW LOUD

['956Wheel]

Is 118 decibels loud enough to wake up that driver that changes lanes into my "invisible" 3500?

I found a horn in a industial supply catalog... 12 VDC, 118 decibels and is described as "118 dB @ one meter tone". It's 304 stainless and is 16" long by 4" X 4"... $85. What is one meter tone? Deep or squeek?

I really wanna see some urine dripping from those rice burners!

Thanks bros

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9535hundred

 

[Todd G]

I think some of the air horns people are using are rated at 135db. WAAAAY LOUDER!

 

[EMDDIESEL]

Most decibel readings will be given at "10 feet" or "100 feet". that is the normal standard of measurment for sound readings. So if a horn says it is 130db at 100 feet, it is ALOT louder if it is measured at 10 feet!. You should try and look for the highest number at 100 feet. That is a true idea of just how loud your horns are. For example:
Horn "A" 135db at 100 feet
Horn "B" 145db at 10 feet
Even though horn "B" seems like it is louder because you see 145 db, the truth is horn "A" is louder since the reading was taken 90 feet farther away. Read the fineprint when horn shopping, you will be much happier. Or just buy Hadleys no matter what and you will be happy!

 

[illflem]

Mike, I wonder if 118 dB @ one meter tone means that is the dB at one meter from the horn?

 

[Cooker]

IMO 118db is not that loud.

 

[EMDDIESEL]

If you want a refference idea,
Most Air Raid sirens are between 100-115db at 100Feet. OR 130-145db at 1 meter
Most train horns are between 110-115db at 100feet OR 140-145db at 1 meter
A 1 meter db rating sounds more immpressive then it really is as you can see. so a horn for your truck that approaches these ratings is pretty F***ing loud.

 

[Koa Man]

110 to 118 db is about what most stock horns run. My 26 inch Hadley is rated at 135db when you run 120 psi thru it. Even when the air tank runs down to 90 psi it is way louder than stock. I have a pix of it in the air horn mounting thread in this forum. Paid about $59 for it from JC Whitney about 15 years ago. Still works perfectly.

 

[Diesel Freak]

You do not need a horn, just straight pipe the truck and get right along side and blast him with a 2500 rpm downshift. #ad
WAY OVER 120 db

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2001 ETH-DEE, Diablo Power Puck, Bosch 275's, Practical Solutions Boost Module and Elbow, LFT Silencer Ring Eliminator, K&N, Straight Piped http://www.mudrunner.sites.cc

 

[JR2]

The evacuation horn we have were I work is rated at 100db at six miles. It is the loudest thing I have ever heard. You have to wear hearing protection when it goes off or you are deaf for hours. Too bad it would not fit in the back of the truck

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John D. Rathert Jr.
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01 2500 Forrest Green Sport SLT+ QC LWB 4x4 Auto 3. 54 rear end with all options avail. DC Nerf Bars, DC Grill Guard, DC mud flaps, Line-X bed liner, Leer 160XL Topper, Power Edge, EZ Edge, SPA Boost/EGT Gauge on pillar mount, DTT's tc/vb combo, 275 RV injectors, DD 4" Exhaust and a KN RE0880 where the air box use to be. New turbo (HX40), SS fuel lines and bigger injectors in planning stages... . See My Truck, Dads truck: 98. 5 3500 SLT QC LWB 4x4, Brother Truck: 92 W250 SLT CC LWB 4x4 (Dads old truck) Winter fun - 2000 Skidoo Summit 700
I am my own warranty station. ZOOM ZOOM
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[EMDDIESEL]

I am guessing your exxagerating a bit on the 100db at 6 miles. That would come out to be approximatley 3,000db at 100 feet. Which is about twice as loud as the space shuttle taking off. No hearing protection in the world could protect you from that. At that volume no human could survive, it would be fatal. But it would be a nice idea to get peole out of your way. You could just vaporise them. The loudest air raid siren ever built was only 148db at 100ft. And that could be heard for about 3-5 miles depending on terrain and wind. But at that distance it would only be around 70-80db.
(by the way, in case you are wondering why i have so much info on such a bizzare topic, i used to work for a company that desinged and insatlled community warning systems for the Military and Municipalities)

 

[Steve M]

EMDDiesel,
Apperantly, you've not heard my ol' lady when she feels the need to express her point of view!

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98 2500 CC SB 4X2 12v 5spd 4. 10, -silencer, AFC+20, Edelbrock IAS, VDO gauges, Reese 15k Classic
97 Dodge Stratus 150HP
92 Harley Fatboy, Dynojet fuel management, Supertrapp 2-1
00 Jayco 25' 5th wheel, single slide

 

[EMDDIESEL]

I feel your pain, times like those i wish i was deaf!