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I know it will make it stronger and more solid which is better for spl but will it effect the tuning and how the box sounds?
Agreed, use some window bracing instead if you are looking for strength.you talking resin or resin and mat? Resin will do nothing for strength and even with mat if would have to be several layers to make a diff.
It WILL cost you some $$$ and take some time, that's about the only thing certain. Some guys gain a fuzz on the meter doing resin inside and some don't. No it won't change how the box sounds unless you had a bunch of leaks and magically sealed them...
Don't believe the vid personally, static charge in the air maybe. Secondly a ported box his a BIG *** hole in it, air will escape from there before it magically went thru the mdf walls...depends on material box is made of.... if birch above help is correct, mdf on the other had is very pourous and applying resin over the complete box would make it more air tight (yes air will pass through the mdf - search for mdf and shop vac videos) so it will make the boxes air loss loss much less.... chasing .10 in the lanes yes, daily not worth the cost, time and smell. if going to resin might as well just build it from birch...
Yes exactly, people continuously quote the MDF leaks video but when you have a huge hole in your box for the port that air is going to take the path of least resistance, not try and force its way through the mdf.Don't believe the vid personally, static charge in the air maybe. Secondly a ported box his a BIG *** hole in it, air will escape from there before it magically went thru the mdf walls...
x2 on only using birch so personally I don't care if you can use MDF as a collander to strain pasta //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gifmore pressure builds up in a ported box over a sealed box, I guess i am bias twords Birch - easier to use, makes less saw dust, stronger, lighter, resist moister way-way more. I only us MDF when i half to anymore, for less that $10 a sheet difference i just cant see why not to use it.