Honda 2000 quiet box, I'm back!!
https://www.rv.net/forum/index.cfm/fuseaction/thread/tid/28956619/srt/pa/pging/1/page/1.cfm Getting rid of the Toyota and bought a Roadtrek. First thing I did was take out the Onan and sell it. S...
Forum Discussion
Two more studies:
Wood box with a partial baffle and used ~1in think fiber glass insulation ~7db reduction
https://www.ajol.info/index.php/jasem/article/download/135141/124634
FRP panels with `2in Rockwool and no baffle ~18db
https://www.academia.edu/download/67787833/31568.pdf
What no one seems to have done yet is study a panel box built like this:
FRP | Mass loaded vinyl | Rockwool | Metal screen (think bird screen)
And then you would also need a baffle with at least two chambers.
I built a wooden box with a two-chamber baffle for the air intake and one for the output but used a significantly lesser sound absorption product than the Rockwool and got a 5db reduction in noise.
My next project will be built using the panel design above and the baffles. Of course, I need time to do it. :)
Wood box with a partial baffle and used ~1in think fiber glass insulation ~7db reduction
https://www.ajol.info/index.php/jasem/article/download/135141/124634
FRP panels with `2in Rockwool and no baffle ~18db
https://www.academia.edu/download/67787833/31568.pdf
What no one seems to have done yet is study a panel box built like this:
FRP | Mass loaded vinyl | Rockwool | Metal screen (think bird screen)
And then you would also need a baffle with at least two chambers.
I built a wooden box with a two-chamber baffle for the air intake and one for the output but used a significantly lesser sound absorption product than the Rockwool and got a 5db reduction in noise.
My next project will be built using the panel design above and the baffles. Of course, I need time to do it. :)
