SnowDrifter Posted August 30, 2013 Report Share Posted August 30, 2013 But that's port area per cubic foot. Don't worry about that I've had boxes with 7sqin per cubic foot. Extremely musical, got loud, played from 24hz up to 60hz fairly flat too. I had a home theater box with 19sqin per cubic foot. Same deal. Very musical. I've had boxes in the middle with 14 per cubic foot. Same idea. In all of those boxes, I never paid attention to the port area per cubic foot as much as I did my total port area ~~~~~~~~SAY NO TO PHOTOBUCKET~~~~~~~~ Snow's DD-1 tracks here: https://www.stevemeadedesigns.com/board/topic/167433-snows-dd-1-tracks/ My take on OFC vs CCA: https://www.stevemeadedesigns.com/board/topic/110381-things-that-piss-you-off-in-the-car-audio-world/?do=findComment&comment=2461444 Link to comment Share on other sites More sharing options...
Krakin Posted August 30, 2013 Report Share Posted August 30, 2013 I don't know how your doing your math, but area is length times width. 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...
vw passat Posted August 30, 2013 Author Report Share Posted August 30, 2013 ok my port height is 13.5'' and width is 2'' Link to comment Share on other sites More sharing options...
Krakin Posted August 30, 2013 Report Share Posted August 30, 2013 If you go that over 20 sq inches, then you are going to have to make the port longer to compensate. 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...
Sergeant_Skyrim Posted August 30, 2013 Report Share Posted August 30, 2013 ok my port height is 13.5'' and width is 2'' That gives you 13.5x2=27 Build in progress Link to comment Share on other sites More sharing options...
vw passat Posted August 30, 2013 Author Report Share Posted August 30, 2013 and I have 24.1 length of port for a 33hz is that good? thanks guys Link to comment Share on other sites More sharing options...
Krakin Posted August 30, 2013 Report Share Posted August 30, 2013 I believe once he goes below 2" wide he will have problems just from how small the width is. Just leave and go build 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...
Sergeant_Skyrim Posted August 30, 2013 Report Share Posted August 30, 2013 I believe once he goes below 2" wide he will have problems just from how small the width is. Just leave and go build it. If I'm remembering correctly the box for one of my single Zcons on a 2100 had a port area of 13x2.5. Didn't have any port noise, played to 26hz and was just barely wider than OPs. I'd think something with 1/3 the Xmax on <1/2 power tuned to same frequency would produce less port noise with same-ish specs right? Only way to find out is to build it though! Build in progress Link to comment Share on other sites More sharing options...
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