fritosaregood Posted December 11, 2013 Report Share Posted December 11, 2013 Thanks for regurgitating information that I stated, I stated that I can reference detailed tests done. These tests run from the two men who set the world standard for speaker parameters, JBL a company that pioneered many technologies in the speaker industry, a man with a 35-year career working at the NASA Jet Propulsion Lab (during the Apollo era), members on here, Vance Dickason whom has contributed tremendously to the audio world, and has won many awards for his work, along with many other sources which have detailed explanations on this topic. If you would like I can present you with links to these studies as to you can see them as well. That being said, with the way in which a car works, you can get away with less than the recommended port area. You can even use significantly small ports for high SPL builds. It's all about the sacrifices you are will to make for your system. You must be new to stereos, if all you can do is quote things that guys did long ago. The work NASA did with sound testing was far from building a ported sub box. seller feedback: http://www.stevemeadedesigns.com/board/ind...showtopic=61719 http://www.stevemeadedesigns.com/board/ind...showtopic=68281 build log: http://www.stevemeadedesigns.com/board/index.php?showtopic=44800 Gf's build: http://www.stevemeadedesigns.com/board/topic/54346-kickergirls-camaro-new-box-pg-5/#entry753970 Link to comment Share on other sites More sharing options...
Krakin Posted December 11, 2013 Report Share Posted December 11, 2013 I must have forgotten that proven work, and the laws of physics don't apply in audio. Oops... Anyway this is from Authur Ludwig Sr. (the engineer from NASA) http://www.silcom.com/~aludwig/contents.htm This work wasn't done for NASA it was done by himself to amuse himself and spread his knowledge. I will no longer participate in this back in forth since you have boiled down to flat out insulting me. If you have any work that is documented and can explain your side of the document then please send it to me, but do so through pm as to avoid further clutter to this thread. Edit: spelling 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...
fritosaregood Posted December 11, 2013 Report Share Posted December 11, 2013 I must have forgotten that proven work, and the laws of physics don't apply in audio. Oops... Anyway this is from Authur Ludwig Sr. (the engineer from NASA) http://www.silcom.com/~aludwig/contents.htm This work wasn't done for NASA it was done by himself to amuse himself and spread his knowledge. I will no longer participate in this back in forth since you have boiled down to flat out insulting me. If you have any work that is documented and can explain your side of the document then please send it to me, but do so through pm as to avoid further clutter to this thread. Edit: spelling Why don't you just go build a box from that calculator posted, and post back here with the results. Then you will stop quoting things you hardly know anything about. seller feedback: http://www.stevemeadedesigns.com/board/ind...showtopic=61719 http://www.stevemeadedesigns.com/board/ind...showtopic=68281 build log: http://www.stevemeadedesigns.com/board/index.php?showtopic=44800 Gf's build: http://www.stevemeadedesigns.com/board/topic/54346-kickergirls-camaro-new-box-pg-5/#entry753970 Link to comment Share on other sites More sharing options...
Krakin Posted December 11, 2013 Report Share Posted December 11, 2013 I will apologize if my view point offends you and you experience, and please share with me your proof or any other proof of how a larger port area affects bandwidth, and or peaks in the response; as you have not tried to prove your side of the argument, or I missed it, but if not you can once again stop directly insulting me. 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...
kirill007 Posted December 11, 2013 Report Share Posted December 11, 2013 Lol, a large port area affects bandwith. (not directed to Krakin) Thinking is the root of all problems... You ALWAYS get what you pay for. Link to comment Share on other sites More sharing options...
CleanSierra Posted December 11, 2013 Report Share Posted December 11, 2013 Dude you have made like 3 different threads asking the same thing... Give me the max dimensions you have to work with and will give you all your specs and a cut list. I know but i felt like i had to more specific.. i dont have them now cuz i lost where i wrote them down...but will tell u in the morning... Also i actually want to learn how to be able to find it myself.. so ive been looking for "explanations" What will happen is you will find individual's preference. A lot of what you see well be guys that push the port area per square foot idea. A range of what the port should be in to operate as a port, and at the same time, avoid noise. It's going to come down to you taking and figuring out what YOU like as well. Some go by Xmax, cone area and tuning. Some go by a rule of thumb because in practice, they've never seen the need for so much port. The vehicle plays a major role in what kind of port area you will need with cabin gain and acoustics. You will have to make your own decision and see what suits you. Minimum port area to just barely avoid noise or a bigger port where you don't have to worry about noise. I will say this, I wonder if the guys that go on the smaller side of port area and are loud on the meter are experiencing power compression(port noise), and it's the TURBULENCE that's allowing them to get louder? This has made me wonder for quite some time Im not the one you want to try to troll. Just a fyi for you. Link to comment Share on other sites More sharing options...
GueroZ28 Posted December 11, 2013 Author Report Share Posted December 11, 2013 Dude you have made like 3 different threads asking the same thing... Give me the max dimensions you have to work with and will give you all your specs and a cut list. Max dimensions are Length- 33inches Width- 16inches Height- 13inches Box recommended amount of air space for the subs is 1.65cu ft Link to comment Share on other sites More sharing options...
Joe X Posted December 11, 2013 Report Share Posted December 11, 2013 It will need to be sub/port up due to the lack of depth but taller since your dimensions are insufficient, 17 tall, or not as tall if you can go wider. Link to comment Share on other sites More sharing options...
GueroZ28 Posted December 11, 2013 Author Report Share Posted December 11, 2013 It will need to be sub/port up due to the lack of depth but taller since your dimensions are insufficient, 17 tall, or not as tall if you can go wider. so what dimensions csn I use without going over and pointing it up.. also I can go wider from front to back not sides to sides Link to comment Share on other sites More sharing options...
Joe X Posted December 11, 2013 Report Share Posted December 11, 2013 You can go a bit taller and a bit deeper if that's all you got, Durangos are really wide though, kind of odd you can't go beyond 33W. Link to comment Share on other sites More sharing options...
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