SMZ2 Posted January 14, 2014 Report Share Posted January 14, 2014 Okay this is a calculator I have on my android phone. I am a little short on cubes and the cubes are not exact I think I have around 13ish before displacements. Here is my idea for the port though. I may make it somewhat external so I can squeeze out a few more cubes but I'm not sure how that will change the tuning. Supposedly driver side ports are the loudest in suvs on the meter and also very windy. Will this port configuration work well? If so I will start cutting out the front baffle soon. Does it look like it will work well? The subs are fi bl/psi 18's. My Build Log!http://www.stevemead...nissan-xterror/ Check the Youtube Channel for Updates!http://www.youtube....ser/Xterror2002And Seller Feedbackhttp://www.stevemeadedesigns.com/board/topic/163179-bought-from-smz2/#entry2363713 Link to comment Share on other sites More sharing options...
SMZ2 Posted January 14, 2014 Author Report Share Posted January 14, 2014 My Build Log!http://www.stevemead...nissan-xterror/ Check the Youtube Channel for Updates!http://www.youtube....ser/Xterror2002And Seller Feedbackhttp://www.stevemeadedesigns.com/board/topic/163179-bought-from-smz2/#entry2363713 Link to comment Share on other sites More sharing options...
jarrius Posted January 14, 2014 Report Share Posted January 14, 2014 Im not box expert by any means so keep that in mind. Did you account for sub displacement? Also have you looked in to a regular slot port instead of the one you have designed? You may get more space that way and be able to mount the subs side by side if you wish. Also try torres box calc it stillbhas its problems but it is one of the best free sofwares out there 2012 Chevy sonic1xSQ HDC3 12 D2RF R1200d 140 square foot of Q-Mat(soon to be installed) 140.2Db sealed on the dash with TL 142 DB sealed on the dash with another meter (was dead on with the TL at a show i was at) 141 on music. strangeduck,on 02 Jan 2014 - 01:39 AM, said: when my car spins out i just put the car in neutral, turn in the direction i want to go and pucker my asshole Link to comment Share on other sites More sharing options...
jarrius Posted January 14, 2014 Report Share Posted January 14, 2014 Also i dont know how accurate this is but its worth a try http://www.the12volt.com/caraudio/boxcalcsm.asp#porsq 2012 Chevy sonic1xSQ HDC3 12 D2RF R1200d 140 square foot of Q-Mat(soon to be installed) 140.2Db sealed on the dash with TL 142 DB sealed on the dash with another meter (was dead on with the TL at a show i was at) 141 on music. strangeduck,on 02 Jan 2014 - 01:39 AM, said: when my car spins out i just put the car in neutral, turn in the direction i want to go and pucker my asshole Link to comment Share on other sites More sharing options...
DylanBunch Posted January 14, 2014 Report Share Posted January 14, 2014 also, doesnt look like enough port area for 18s 2006 Ford Explorer 2 Team AA/Sundown 15s 6th order Ct Sounds 7k 4 PRV Mr500 8s Rockford p1000-2 Team Subsonic Lows Link to comment Share on other sites More sharing options...
SMZ2 Posted January 14, 2014 Author Report Share Posted January 14, 2014 also, doesnt look like enough port area for 18sWhat is a good port area formula or chart to go by? My Build Log!http://www.stevemead...nissan-xterror/ Check the Youtube Channel for Updates!http://www.youtube....ser/Xterror2002And Seller Feedbackhttp://www.stevemeadedesigns.com/board/topic/163179-bought-from-smz2/#entry2363713 Link to comment Share on other sites More sharing options...
DylanBunch Posted January 15, 2014 Report Share Posted January 15, 2014 its really trial and error, theres a website that i can post a link to that has a formula for a suggested minimal port area for no port noise but the number is always so high it hard to have that much port area and get the tuning where you like. Im far from an expert but if i were gonna make a wall with 2 18s I would shoot for around 100" per sub, maybe a little less. Just me though, i think 50" per sub is not enough though. I have 70" port for 1 15 2006 Ford Explorer 2 Team AA/Sundown 15s 6th order Ct Sounds 7k 4 PRV Mr500 8s Rockford p1000-2 Team Subsonic Lows Link to comment Share on other sites More sharing options...
Krakin Posted January 15, 2014 Report Share Posted January 15, 2014 You can go slightly on the lower side of the formula's for car audio, but you will most likely have port noise. But all the formulas can do is get you within +10% even less for the calculator, but the theory behind it still stands true, you have to have X amount of port area for Y driver, no matter how much volume is in any enclosure for that driver. Calculator: http://www.carstereo.com/help/Articles.cfm?id=31 Formulas: http://www.carstereo.com/help/Articles.cfm?id=21 http://www.diysubwoofers.org/misc/portcal.htm 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...
SMZ2 Posted January 15, 2014 Author Report Share Posted January 15, 2014 I guess I am just finding it difficult to get it to be 100" per sub because the tuning it hard to get into the 36hz without a really long port. My Build Log!http://www.stevemead...nissan-xterror/ Check the Youtube Channel for Updates!http://www.youtube....ser/Xterror2002And Seller Feedbackhttp://www.stevemeadedesigns.com/board/topic/163179-bought-from-smz2/#entry2363713 Link to comment Share on other sites More sharing options...
Krakin Posted January 15, 2014 Report Share Posted January 15, 2014 Sacrifices. Got to make them somewhere. 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...
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