1. ## how to find port area need help asap

i need to know the equation for finding the port area asap please

thanks guys

2. ## Re: how to find port area need help asap

for slot ports, 12-16 square inches per square foot of box space.

3. ## Re: how to find port area need help asap

i know that but i need an equation to find the port area of a port cuase i need to get 132 sq*2 inches of port area at 35 hz for an 8 cube box net

thanks

4. ## Re: how to find port area need help asap

Originally Posted by 81chevystep
i know that but i need an equation to find the port area of a port cuase i need to get 132 sq*2 inches of port area at 35 hz for an 8 cube box net

thanks
wow....its width X height= port area

5. ## Re: how to find port area need help asap

i was wondering this to.

bonesninja, so if the height is 14" and the width is 3 1/2" it would be 14x3 1/2=49 so it would be 49 sq*2 of port?

6. ## Re: how to find port area need help asap

Originally Posted by gattaluvdatBASS
i was wondering this to.

bonesninja, so if the height is 14" and the width is 3 1/2" it would be 14x3 1/2=49 so it would be 49 sq*2 of port?
bingo

7. ## Re: how to find port area need help asap

Originally Posted by gattaluvdatBASS
i was wondering this to.

bonesninja, so if the height is 14" and the width is 3 1/2" it would be 14x3 1/2=49 so it would be 49 sq*2 of port?
yep. you need to do more like 8 inches wide to get your desired port area. even though you really only need 100-120 sq. inches or so with that box, for a daily driver.

8. ## Re: how to find port area need help asap

Originally Posted by kcdc30
yep. you need to do more like 8 inches wide to get your desired port area. even though you really only need 100-120 sq. inches or so with that box, for a daily driver.
he's not the OP.....but the OP's question is pretty unclear, i think he might be looking for the actual length not the port area. Quick calc's tell me he needs around 27 inches port length for 35 hertz in an 8 cube net box

9. ## Re: how to find port area need help asap

Originally Posted by bonesninja
he's not the OP.....but the OP's question is pretty unclear, i think he might be looking for the actual length not the port area. Quick calc's tell me he needs around 27 inches port length for 35 hertz in an 8 cube box
i was agreeing with him by saying "yep", the rest was to the op.

10. ## Re: how to find port area need help asap

Originally Posted by kcdc30
i was agreeing with him by saying "yep", the rest was to the op.

11. ## Re: how to find port area need help asap

dont include the port in the volume. if your port is 8"x14"x X"L, then you need to figure out the overall displacement using external dimensions of the port. then subtract that from the net volume of the box (using the boxes internal dimensions).

i always figure out the box size i want, then the port i need for that box, then build the box that much bigger to accomodate the port and the volume it takes up.

12. ## Re: how to find port area need help asap

Originally Posted by bonesninja
he's not the OP.....but the OP's question is pretty unclear, i think he might be looking for the actual length not the port area. Quick calc's tell me he needs around 27 inches port length for 35 hertz in an 8 cube net box
maybe so, but he needs alot more port area than that for 8 cubes either way.

13. ## Re: how to find port area need help asap

and someone needs the tuning curve chart. if you want to use round ports, here you go.

http://www.car-fi.com/techcenter/vent6.htm

14. ## Re: how to find port area need help asap

Originally Posted by kcdc30
maybe so, but he needs alot more port area than that for 8 cubes either way.
i just answered his question, it seems as if he know exactly what he wants already....and that port area is fine for an 8 cube box

15. ## Re: how to find port area need help asap

Originally Posted by crawlinYJ
and someone needs the tuning curve chart. if you want to use round ports, here you go.

http://www.car-fi.com/techcenter/vent6.htm
maybe he wanted a slot port

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