piccolo Posted August 12, 2015 Report Posted August 12, 2015 I am building a box for my Lexus is300 sportcross (wagon) and need some guidance. I measured my rear again and again and came up with some pretty solid figures. Everything in the picture is drawn to scale. I tried using the Torres calculator (which I will link) to tune the box. Im trying to use 2 4" aero ports seems like the easiest thing to do. Please let me know what you think of the design and the calculations, any feedback is appreciated. http://imageshack.com/a/img633/456/eXYCVc.png http://imageshack.com/a/img673/251/RL8FVV.png
Triticum Agricolam Posted August 12, 2015 Report Posted August 12, 2015 Nowhere near enough port area. What you have is a leaky sealed box. Two 4" ports has about 25 sq in of port area. JL recommends 18.5 sq in per sub and depending on the specifics of your setup that number might be low. "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:
diegoclass2010 Posted August 12, 2015 Report Posted August 12, 2015 he means you need to add more aero ports .... do (6) 4" aero ports or (3) 6" aero ports
piccolo Posted August 12, 2015 Author Report Posted August 12, 2015 Right i mean that would make sense but when I work it out in the Torres Calculator I can't get it to 32.2 hz which is recomended by JL audio.
Triticum Agricolam Posted August 12, 2015 Report Posted August 12, 2015 Can you make the box any bigger? With 6 cubic feet of net airspace and three 6" ports your ports will need to be about 32.75" long to tune you to 32 Hz. "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:
piccolo Posted August 12, 2015 Author Report Posted August 12, 2015 I can not make the box any bigger at all it is going to take up the whole entire trunk as is. Any sugguestions on what I should do? Maybe I can't do aero ports? Can anyone help me on another port set up if I have to?
piccolo Posted August 12, 2015 Author Report Posted August 12, 2015 Any advice is appreciated again this is my first box build I have researched a lot but it is very confusing.
Broke_Audio_Addict Posted August 12, 2015 Report Posted August 12, 2015 Go with a slot port. That being said a lot of people's definition of "music" is a clipped 30 hz sine wave with some 80 IQ knuckle head grunting about committing crimes and his genitals.
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