Changes to generator exhaust
Will install resonator from Onan with super trapp 5s spark a restor muffler. The resonator changes tone of exhaust for the better. Still not sure about super trapp will finish con figuration this afte...
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If it was reduced by 10+ decibels the noise would be reduced 90%, or more. I could see a couple decibels, but hard to imagine 10+ decibel reduction. I would be interested in reading your references, or how you did the measurements.
I just don't see how that could be done to an Onan 2800, and still allow enough air for it to breath, and stay cool.
I do agree, more insulation, and a spring hanger like Handbasket has done, along with the Resonator will make quite a difference.
This post by Travelin Bill.
Also, FYI - the dB is a ratio of the percentage of energy (noise) change and the scale is a logrithimic scale, not linear. The percentage is the percent of original energy (noise) remaining, not the percentage of energy (noise) lost.
0dB = 100%
1dB = 79.4%
2dB = 63.1%
3dB = 50.1%
4dB = 39.8%
5dB = 31.6%
6dB = 25.1%
7dB = 20.0%
8dB = 15.8%
9dB = 12.6%
10dB = 10%
If I change the noise level by 1dB I have reduced it by 20.6% with 79.4% of the noise remaining or increased it by 20.6% to 120.6% of it's original level. If I change the noise level by 2dB I have reduced it by 36.9% with 63.1% remaining or increased it by 136.9%. If I reduce the noise level by 3dB I have reduced it by 1/2. If I increase the noise level by 3dB I have doubled it. etc.
* This post was edited 04/03/08 08:22am by Travelin' Bill *
I just don't see how that could be done to an Onan 2800, and still allow enough air for it to breath, and stay cool.
I do agree, more insulation, and a spring hanger like Handbasket has done, along with the Resonator will make quite a difference.
This post by Travelin Bill.
Also, FYI - the dB is a ratio of the percentage of energy (noise) change and the scale is a logrithimic scale, not linear. The percentage is the percent of original energy (noise) remaining, not the percentage of energy (noise) lost.
0dB = 100%
1dB = 79.4%
2dB = 63.1%
3dB = 50.1%
4dB = 39.8%
5dB = 31.6%
6dB = 25.1%
7dB = 20.0%
8dB = 15.8%
9dB = 12.6%
10dB = 10%
If I change the noise level by 1dB I have reduced it by 20.6% with 79.4% of the noise remaining or increased it by 20.6% to 120.6% of it's original level. If I change the noise level by 2dB I have reduced it by 36.9% with 63.1% remaining or increased it by 136.9%. If I reduce the noise level by 3dB I have reduced it by 1/2. If I increase the noise level by 3dB I have doubled it. etc.
* This post was edited 04/03/08 08:22am by Travelin' Bill *
