Roxul Sound Proofing + 2x Drywall Layers & Green Glue ( Test 3 ) / Shapeoko 3 XL SoundProof Box

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Canada HotNoob
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Published on ● Video Link: https://www.youtube.com/watch?v=IhCdL3bgkDI


Duration: 7:16
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2 tubes of greenglue used, and 2/3 of a tube of green glue accoustic sealant, over an area of 2 to 2.5x 4x8' drywall pieces... so i guess only 40% of recommended amount of greenglue. 2nd layer of drywall added, except for 2 small minor pieces.

there are many cuts / additional pieces, as the box was designed to be taken apart for moving. i think it has some degrading performance effects, but overall based on the seal, might be 5%-10% difference if sealed better... based on putting pressure on door to make seal or not.


Results!!!
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again from my phone. hauwii p10 plus \w +10db added for "calibration." various devices tested to give a reference point.
ambient apartment sound level 30db

music 65-70db =) 32-35db - 32db above box.
vacuum 65-70db, at 70db "super saiyan mode". 40-45db while vacuum is 70db. 35db above box.
trimmer 55-60db =) 40db and 38db above the box.
trimmer \w felt, 1-2 db higher. 35 db and 32db above the box
trimmer mounted in shapeoko... 51-52db! =) 31db and 30db above the box.

will still go on to improving sound proofing via finishing touches, putty, more sealant, and hooking up via outlet inside.
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don't know if the 2nd layer of drywall is worth it. i definitely noticed a difference with the music, but barely any difference with mechanical devices / vibrations.

again, don't know how much of an effect green glue is having. shits expensive.

maybe later on, can do a build without greenglue to see if there is a difference. considering the price of drywall, and how expensive greenglue is... maybe best just get extra thick drywall.

overall, i think the insulation has had the most effect on sound proofing, and the drywall has amplified the effect.

roxul is sound absorbing ( aka slowing ), and drywall is sound blocking ( and reflecting. think of it like a mirror ). i think putting drywall on the inside would not be very beneficial, as it is a small space, which could cause a sound amplifying effect.

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Test #1: https://youtu.be/Uiz0mp9yn-M -- insulation only
Test #2: https://youtu.be/LKEAtJ_WdN8 -- insulation + 1 layer drywall
Test #3: https://youtu.be/IhCdL3bgkDI -- insulation + 2 layers of drywall (with greenglue inbetween)
Test #4: Coming soon... more or less... need to play around with my cnc router now :)



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