Hugh G. Rection Posted March 31, 2015 Report Share Posted March 31, 2015 Strangeduck- Yes, you have to have some resistance. Thats why port area and length have to be a certain way. If resistance didnt matter, then port area and length wouldnt matter. Thats what keeps everything jelly. Owner of BigAss Ports Link to comment Share on other sites More sharing options...
Krakin Posted March 31, 2015 Report Share Posted March 31, 2015 Smooth surface CANT hurt..... No way... Not from "what ive seen, and whos told me to do it".. but.. meh...... Two demonstrations with the dimpling of a golf ball and the affect of not having a smooth surface and finding the more optimal size, shape and abundance. http://num.math.uni-goettingen.de/bail/documents/proceedings/tai.pdf http://www.academia.edu/9931460/Effect_of_dimples_on_a_golf_ball_and_a_car This one is an adaption of the process for the use with water vessels. http://my.fit.edu/~swood/Reduction%20of%20Ship%20Resistance%20through%20Induced%20Turbulent%20Boundary%20Layers.pdf There are also plenty of examples with engines and the flow of air. Krakin's Home Dipole Project http://www.stevemeadedesigns.com/board/topic/186153-krakins-dipole-project-new-reciever-in-rockford-science/#entry2772370 Krakin, are you some sort of mad scientist? I would have replied earlier, but I was measuring the output of my amp with a yardstick . . . What you hear is not the air pressure variation in itself but what has drawn your attention in the two streams of superimposed air pressure variations at your eardrums An acoustic event has dimensions of Time, Tone, Loudness and Space Everyone learns to render the 3-dimensional localization of sound based on the individual shape of their ears, thus no formula can achieve a definite effect for every listener. Link to comment Share on other sites More sharing options...
Andrew Storlie Posted March 31, 2015 Author Report Share Posted March 31, 2015 well im not chasing the db as its more for show and fun then competition, but ive heard alot of places "claim" that sanding to 3000+ grit allows sound to "flow" along the surface with out getting distorted. im not new to car audio but i am new to walls and systems like the one im building. its over double the power ive dealt with before and if im spending $6k on a system i want to do it right... so recommendations would be to resin and sand a little, test it... then add 45s and see if i like it more, if not take them out... or resin them in if i like it better? soory double post, im new to this and idk how to delete it Link to comment Share on other sites More sharing options...
Jessica Posted March 31, 2015 Report Share Posted March 31, 2015 i don't know, i guess i have seen a lot of guys get really damn loud with just shitty burp boxes, like buckets with a huge port. So when i see advice on building a "loud" box i take it with a grain of salt. Rest in peace, walled 87 accord build log 03' Corolla build with AA Mayhem inside. My super random youtube channel and terrible camera work. Wiring comparison by CaptainzPlanetz Wire and fuse guide by Guest SyKo13 Link to comment Share on other sites More sharing options...
Kyblack76 Posted March 31, 2015 Report Share Posted March 31, 2015 Smooth surface CANT hurt..... No way... Not from "what ive seen, and whos told me to do it".. but.. meh...... Two demonstrations with the dimpling of a golf ball and the affect of not having a smooth surface and finding the more optimal size, shape and abundance. http://num.math.uni-goettingen.de/bail/documents/proceedings/tai.pdf http://www.academia.edu/9931460/Effect_of_dimples_on_a_golf_ball_and_a_car This one is an adaption of the process for the use with water vessels. http://my.fit.edu/~swood/Reduction%20of%20Ship%20Resistance%20through%20Induced%20Turbulent%20Boundary%20Layers.pdf There are also plenty of examples with engines and the flow of air. didnt look at your links.. but what im gonna do.. is add a "something" on each wall .. spaced...... Tony D did and Ray West showed some fun facts....... a bit a go SMD SUPER SELLER The Burban Build Blazer Build sold Acura trunk build sold Link to comment Share on other sites More sharing options...
Krakin Posted March 31, 2015 Report Share Posted March 31, 2015 So you say it can't hurt, then say perfectly vague stuff that is exactly what I just posted..? Which one is it? Krakin's Home Dipole Project http://www.stevemeadedesigns.com/board/topic/186153-krakins-dipole-project-new-reciever-in-rockford-science/#entry2772370 Krakin, are you some sort of mad scientist? I would have replied earlier, but I was measuring the output of my amp with a yardstick . . . What you hear is not the air pressure variation in itself but what has drawn your attention in the two streams of superimposed air pressure variations at your eardrums An acoustic event has dimensions of Time, Tone, Loudness and Space Everyone learns to render the 3-dimensional localization of sound based on the individual shape of their ears, thus no formula can achieve a definite effect for every listener. Link to comment Share on other sites More sharing options...
Kyblack76 Posted March 31, 2015 Report Share Posted March 31, 2015 So you say it can't hurt, then say perfectly vague stuff that is exactly what I just posted..? Which one is it? your mother ? lol 45's.. im meh.. but wall work.. im down.. GET IT ? SMD SUPER SELLER The Burban Build Blazer Build sold Acura trunk build sold Link to comment Share on other sites More sharing options...
Krakin Posted March 31, 2015 Report Share Posted March 31, 2015 So you don't know.. Krakin's Home Dipole Project http://www.stevemeadedesigns.com/board/topic/186153-krakins-dipole-project-new-reciever-in-rockford-science/#entry2772370 Krakin, are you some sort of mad scientist? I would have replied earlier, but I was measuring the output of my amp with a yardstick . . . What you hear is not the air pressure variation in itself but what has drawn your attention in the two streams of superimposed air pressure variations at your eardrums An acoustic event has dimensions of Time, Tone, Loudness and Space Everyone learns to render the 3-dimensional localization of sound based on the individual shape of their ears, thus no formula can achieve a definite effect for every listener. Link to comment Share on other sites More sharing options...
Kyblack76 Posted March 31, 2015 Report Share Posted March 31, 2015 So you don't know.. nope SMD SUPER SELLER The Burban Build Blazer Build sold Acura trunk build sold Link to comment Share on other sites More sharing options...
Karkov Posted March 31, 2015 Report Share Posted March 31, 2015 Just leave the 45's out. Golf balls travel one direction where as the air in our ports move in and out so maybe smooth is better more often then not in car audio where as in golf there is less friction with the outside of the golf ball as opposed to if it were smooth? I am just thinking out loud. What I'm saying is, if a golf ball were smooth it wouldn't go as far but it still needs to travel one direction. Air goes back and forth in are ports so smooth is better "most" of the time? 2007 Chevy Tahoe (SOLD) 12 ~ FI Audio X series 10" w/BP option 2 ~ DC Audio 5.0K @0.67 3 ~ DC Audio 5.0K @1.0 2 ~ PPI 3 way sets (not installed yet) 1 ~ RF T400-4, 1 ~ RF T600-2, 1 ~ RF T600-4 4 ~ CT Sounds 5.25" Strato comps (rear fill only) 1 ~ XS Power D4800 1 ~ XS Power D3400 8 ~ XS Power XP3000 160 stock alt, Mechman 370 Elite, 185 DC Power 320+ Sq. Ft. Sound Deadener Pioneer AVH-X5500BHS Youtube: https://www.youtube.com/user/knfjdkghjudfhsgkjdhf/videos?sort=dd&view=0&shelf_id=0 Link to comment Share on other sites More sharing options...
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