Aero port help

[I Like Waffle]

So ive been waiting for 3 days to finish my box for 2 10s" for a lady and cant get help in my other topic, i dont know shit about aero ports but wanted to try them. Manufacturer reccomended for one sub - 1.5 cubes, with 2 3" ports 13" long, tuned to 50hz. Im mocking up the box now and cant cut anything till i figure out where the ports are gonna go and how many of them i need. Another member suggested 2 3" ports 10.5" long which will get me tuned around 38hz. I cant figure out if i need 2 ports per sub or what though. I already have 10ft of 3" pvc, so im just waiting now to cut it. The actual box size i have now is around 3.3 cubes before port/sub displacement. Some one please help me or show me a site that has a functional aero calculator so i can finish this box. Id appreciate it //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

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[mazdakid 5,000+ posts]

do you have the flares to make it an actual aero, or is it just regular round pvc? the psp site has a port calculator.

 

[KyleBechtold 5,000+ posts]

what is the difference with aero's over slots minus space?

 

[I Like Waffle]

aeros are somewhat easier to do, and easier to change tuning if you decide from what i hear. I could just as easily do a slot port though, doesnt matter to me either way, i just want the box tuned to 38hz and thought aeros would look cool and wanted to try them out. //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif

 

[I Like Waffle]

psp calc is coming up with the ports being 6.5 inches long for my box (3 cubes tuned to 38) but the box is 3 cubes BEFORE port and driver displacement, does it take that into account?