REH Posted June 9, 2014 Report Share Posted June 9, 2014 Double layered everything. That would explain it, I was scratching my head lol. Link to comment Share on other sites More sharing options...
Jon Tyler Posted June 9, 2014 Report Share Posted June 9, 2014 Not related to your question or anything but.... Thats some really nice box work, hope you share when youre done Jon Funda 16 Car audio Enthusiast and Still learning Ragnarok Scenario Player, Youngblood #111 Link to comment Share on other sites More sharing options...
Krakin Posted June 9, 2014 Report Share Posted June 9, 2014 Also for finding the port area suggested, you can refer to this calculator. http://www.carstereo.com/help/Articles.cfm?id=31 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...
luism1983 Posted June 9, 2014 Author Report Share Posted June 9, 2014 Is double 1/2" wich makes every wall 1" if that makes a difference? audio fanatic Link to comment Share on other sites More sharing options...
luism1983 Posted June 9, 2014 Author Report Share Posted June 9, 2014 Thanks!! I will share it once I get the port figured out audio fanatic Link to comment Share on other sites More sharing options...
Krakin Posted June 9, 2014 Report Share Posted June 9, 2014 2.79 before, still not great for four 12's. 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...
Triticum Agricolam Posted June 9, 2014 Report Share Posted June 9, 2014 Hey luism, that's a really nice looking box. It looks like you do nice work. I've got some bad news for you though, as your box is now, you are going to have a really tough time fitting in your ports. It looks like you double walled everything so based on the specs in your picture you have 3.23 cubes of gross internal space. Your four Meso 8" are going to take up another .36-.4 cubes of that leaving your at about 2.85 cubes before port displacement. If you want to use two 6" round ports and tune to 40 Hz they are going to have to be about 40" long, which obviously isn't going to fit, and even if they did they would take up almost half of the internal volume you have left. Two 6" ports is probably more port area than you absolutely need, if you could get some 5" sonotube or some other 5" material your ports would only have to be about 30" long, which you could fit and you would still have enough internal volume. Another option would be three 4" ports, but those may be starting to get on the small side for the amount of cone area you have. I can help you figure out just long any of your ports need to be when you decide what direction you want to go. "Nothing prevents people from knowing the truth more than the belief they already know it.""Making bass is easy, making music is the hard part."Builds: Link to comment Share on other sites More sharing options...
luism1983 Posted June 9, 2014 Author Report Share Posted June 9, 2014 Thanks for the info , what if I just do 1-6" port will still have to be that long? audio fanatic Link to comment Share on other sites More sharing options...
luism1983 Posted June 9, 2014 Author Report Share Posted June 9, 2014 There not 12s there 8s audio fanatic Link to comment Share on other sites More sharing options...
Cj Kumz Posted June 9, 2014 Report Share Posted June 9, 2014 OP you wrote 1" mdf then u said double baffle. That means 2" each side lol. Anyway best advice would be to build a new box. But very nice box you gat the there, really sweet design. You could try what Triticum has said. Even having external ports can help a litte on extra internal space. Vw Polo Pioneer Deh-6050UB Sundown Saz-3500d DD Audio 9500 15'' 5.5 cubic feet box with 10 inch port @ 38hz I live to hear the Bass drop!!! Link to comment Share on other sites More sharing options...
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