View Full Version : does this look correct?

07-05-2006, 06:24 PM
ok, so i tried using a calculator to figure out my port(height, width, length) and this is what came out... does this look right? i dont know if i did it wrong or not, just liiks to be an awfully small port from what i have seen around...

Net Volume: 10.5 cubic feet
Tuning Frequency: 35 Hz
Port Width: 2.5 inches
Port Area: 48.75 Square Inches
Port Length: 4.5 inches

07-05-2006, 06:44 PM

07-05-2006, 06:49 PM
port needs to be bigger, around 10-14sqin per cuft or so

07-05-2006, 06:51 PM
so for 10.5 cubic feet, what wport size would i need to tune it to 35 hZ?

07-05-2006, 07:13 PM
port needs to be bigger, around 10-14sqin per cuft or so

10.5x10 = 105
10.5x14 = 147

105 - 147 sq/in

07-05-2006, 07:23 PM
I get 19.5 inches tall for your port. is that correct?

07-05-2006, 07:30 PM
i get most things car audio, but about ports and tuning, i have NO CLUE whats going on... and i hate it, not understanding pizzez me off!

07-06-2006, 01:37 PM
i get the original number you got...4.5" long using a 48.75sq" port.

this will have a lot of turbulance. go with something larger...somewhere in the range that ultimate was talking about. i don't know the height/width of you box so it kinda hard to know how many sq" you will go so it's even harder to firuge out how long it will need to be. one thing for sure, doing this will knock down your box size a great deal...for example...if you went with a a port that was 16h x 8w (i was trying to get 126sq", the average of the two number ultimate posted) you would have a 21" long port and that would be 1.64cu' of port displacement....something to think about.