How to measure Decibel level of horns - Kawasaki Versys Forum
 
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post #1 of 12 (permalink) Old 05-04-2016, 10:51 AM Thread Starter
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How to measure Decibel level of horns

The few threads I have read on this seem to take the reading at about 1 metre or 3 feet away. Question is motor running or not? Correct distance or not?

This afternoon I will be having someone from our environmental section using a professional device measure the Db of the 2015 650 horn.

Thoughts?

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post #2 of 12 (permalink) Old 05-04-2016, 11:53 AM
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I believe the manufacturers choose where to measure from to market their horns.

Are you doing this to perform a comparison with other horns? If so, then you state the test conditions that were used.

If you are wanting to know so you can determine how effective the horn is at alerting others about your presence, then by the time they are 3 feet from you, you will be too busy avoiding to use your horn.

If you want to know if the horn will get someone's attention then you have to simulate an actual scenario as closely as possible. Have the meter in a car with the windows up, and you ride in their blind spot and hit your horn. Then have them approach you while you are hitting the horn and measure how close you are when the horn gets to a level that would get someone's attention.

Have fun.

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post #3 of 12 (permalink) Old 05-04-2016, 11:57 AM
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motor running (14V vs 12V)

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post #4 of 12 (permalink) Old 05-04-2016, 01:29 PM Thread Starter
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Originally Posted by twowheeladdict View Post
I believe the manufacturers choose where to measure from to market their horns.

Are you doing this to perform a comparison with other horns? If so, then you state the test conditions that were used.

If you are wanting to know so you can determine how effective the horn is at alerting others about your presence, then by the time they are 3 feet from you, you will be too busy avoiding to use your horn.

If you want to know if the horn will get someone's attention then you have to simulate an actual scenario as closely as possible. Have the meter in a car with the windows up, and you ride in their blind spot and hit your horn. Then have them approach you while you are hitting the horn and measure how close you are when the horn gets to a level that would get someone's attention.

Have fun.
Running engine.
Sound reading taken by instrument panel 95 Db
Sound reading from 1 metre directly in front of horn 117 DB
Sound reading from 5 metres diagonal offset 1.5 metres from right side of bike 101 Db
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post #5 of 12 (permalink) Old 05-04-2016, 02:25 PM
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Quote:
Originally Posted by trafman View Post
Running engine.
Sound reading taken by instrument panel 95 Db
Sound reading from 1 metre directly in front of horn 117 DB
Sound reading from 5 metres diagonal offset 1.5 metres from right side of bike 101 Db
So, what conclusion do you draw from the data?

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post #6 of 12 (permalink) Old 05-04-2016, 03:28 PM
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Quote:
Originally Posted by twowheeladdict View Post
So, what conclusion do you draw from the data?
that the 115DB rating one them is not just marketing BS

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post #7 of 12 (permalink) Old 05-04-2016, 05:11 PM
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Originally Posted by silviefox View Post
that the 115DB rating one them is not just marketing BS
Sounds like marketing BS to me. Move two feet away and the sound level drops by 50 percent.

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post #8 of 12 (permalink) Old 05-04-2016, 05:14 PM Thread Starter
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Originally Posted by silviefox View Post
that the 115DB rating one them is not just marketing BS
I didn't know what the manufacture rating was on the horn. I did it to see if I should install a louder horn. My suzuki's horn was very anemic. My Beemer's horn was very loud but I never tested it.
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post #9 of 12 (permalink) Old 05-04-2016, 06:07 PM
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Stock Horn Sucks.... I went with a Stebel Nautilus..https://www.youtube.com/watch?v=WLx3CN0hoPo

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post #10 of 12 (permalink) Old 05-05-2016, 01:03 PM
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You can test the Db output w/ a "Db meter", but what REALLY works is the response from drivers who aren't paying attention as they drift into your lane, and you hit the horn button...!

I had a Nautilus, but it 'died' so I went to a WOLO BadBoy (looks the same!). I've had cars ALMOST roll getting out of my lane when the horn goes off, sounding like a Perterbilt semi!



Also - I can hear it at highway speed even wearing ear-plugs, which the stock horn wasn't loud enough to do.

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post #11 of 12 (permalink) Old 05-05-2016, 02:16 PM
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Quote:
Originally Posted by twowheeladdict View Post
Sounds like marketing BS to me. Move two feet away and the sound level drops by 50 percent.
More than that. -3 db is a loss of 50% in terms of power.

That will be a problem with most any horn. Higher frequency sounds are directional. Low frequency not so much. That's why a subwoofer can be stuck in any crevice in a room, but tweeters need to be pointed right at the level and direction of the listener.
'That's one issue I have with aftermarket horns. I want one that is going to fit in a direction where the horn is pointing forward. Those things are pretty big and there's not a lot of room under the body work.
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post #12 of 12 (permalink) Old 05-07-2016, 11:35 PM
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This works PDG on my '15....


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