ports are driving me crazy

[bvr_j_0969 10+ year member]

just like the title says.

im trying to design a wall for my ext sonoma for 4 re sr 15's and figuring the port out is driving me crazy

would anyone be willing to help me design a box or help me with the ports?

the max deminsions of the box are in the pic. i think its 12.10 gross

with the subs, their displacement, and braces, it needs 10.6966 cft.

and i can figure the port lenght out but it come's to a length that is just a little shy to make an L port. OR way to long and there not enough airspace.

i was wanting around 160 sqaure inches of port.

tuned to around 30-32 hertz

If anyone wants to help me it would be appreciated.

______________________________________________

some questions that were messing me up were.

If your not making the port from one side of the box the the other, can you still use the slot port calculator?

Because i know when your using 3 sides of the box the air will continue to travel half the width of the port.

but what if your only using one side of the box?

............

And when making an L port do you just measure down the middle to get the correct length?

thanks for any help.

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[bvr_j_0969 10+ year member]

anyone?

 

[Pioneer~Saturn 5,000+ posts]

I can give you a hand, but it'd be later

 

[bvr_j_0969 10+ year member]

thanks man

 

[av8ter 10+ year member]

What are you max dimensions? Where do you want the port to exit?

 

[bvr_j_0969 10+ year member]

my max demensions are in the picture in the first port.

(44" wide 37" tall 17" deep" but 28" from the bottom im going to have a 1.5" lip Into the box to acount for the curve in the back of the cab.)

port can come out either top or bottom doesnt matter.

 

[av8ter 10+ year member]

You are def not going to get what you want, 12 cubes with a big port wont happen. How about 3 sr 15s? 4 sr 12s?

Kevin

 

[brian84corvette 10+ year member]

try enlarging the port size - apparently the larger the port is the less long it needs to be to be tuned to your frequency.

I was calculating aero ports 4"aero was like 17" long and 6" aero was like 10" long. ?

 

[bvr_j_0969 10+ year member]

You are def not going to get what you want, 12 cubes with a big port wont happen. How about 3 sr 15s? 4 sr 12s?
Kevin

i will get it, i just need someone to figure up a port length and how to make it fit inside the box.

i will make the box have enough cft.

hell i can even do half the port external if need be

and how many 6" aeros would i need?

 

[bvr_j_0969 10+ year member]

hell i will pay someone 10 bucks to design the box for me ive got all my **** for the system except i cant figure out the **** box

 

[av8ter 10+ year member]

Idea would be 4 6'' aeros.

 

[bvr_j_0969 10+ year member]

i can figure the box up except for one problem,

the box is to wide to make a slot port (using 3 sides of the box as the port)

so i can make the port a little more narrower then the box but would i use a slot port calculator or just a port calculator.

because if the port isnt using 3 sides of the box as walls for the port would the air still travel half the width of the box?

 

[bamaboy 5,000+ posts]

your doing 4 15s with 2.5cubes each, thats getting pretty small

 

[bvr_j_0969 10+ year member]

your doing 4 15s with 2.5cubes each, thats getting pretty small

they are a small airspace sub they are recommended 2.5-3 cft each

 

[galacticmonkey 5,000+ posts]

The SEs work great in very small SEALED boxes. You could run 6 15s sealed and polyfill the heck out of it.

 

[bvr_j_0969 10+ year member]

ive already bought the SR 15's and materials for the box.

but their is one question thats stopping me from the build.

my box is to wide to make a true slot port (uses 3 sides of the box as walls for the port.

so im only going to use one side of the box as a wall for the port.

would i use a slot port calculator or just a square vent calculator?

seeing as a slot port calculator takes in consideration that the air will keep traveling for half the width of the port after it has left the actual port.