Can someone give me the specs on this box design?

[Jonathan Tyler Ecton-Rodriguez]

What is the tuning and cu.ft per sub for this box? its the dual 10" design from Sundown

[Joe X]

It's 2.6 net with subs installed, about 32Hz tuning.

[Joe X]

BTW I do have a problem with that drawing, the second turn of the port on the left side is not the same as in the right side:

[Jonathan Tyler Ecton-Rodriguez]

It's 2.6 net with subs installed, about 32Hz tuning.

can you help me out with one i just built using Torres and Sketchup?

did i build it right for 36.86hz and 3.18cu.ft? torres doesnt give me the dimensions of the port so i did some guessing and used the dimensions i entered. the port i entered was 14.5"x3.5"x24, so i subtracted the 15.5 from 24 and was left with 8.5" left and since the back wall part of the port is only going to be half as wide at 1.75" i did the same length on both sides, since 8.5x3.5=29.75 and 17x1.75=29.75. did i build it right? and if i didnt what are the specs on the box i built?

[CleanSierra]

Did you measure your port length using the center line of the port the entire length?

[Jonathan Tyler Ecton-Rodriguez]

Did you measure your port length using the center line of the port the entire length?

how do i measure the centerline the whole length of it? and this is what i had in Torres

[Joe X]

Once the subs are in (0.1 cubic feet each) your box is 2.7 net @38Hz, your center line length is 27.375", just enter that 27,375 and set driver displacement as 0.2 and you will get something closer to what I am giving you.

[Hugh G. Rection]

It's 2.6 net with subs installed, about 32Hz tuning.

can you help me out with one i just built using Torres and Sketchup?

did i build it right for 36.86hz and 3.18cu.ft? torres doesnt give me the dimensions of the port so i did some guessing and used the dimensions i entered. the port i entered was 14.5"x3.5"x24, so i subtracted the 15.5 from 24 and was left with 8.5" left and since the back wall part of the port is only going to be half as wide at 1.75" i did the same length on both sides, since 8.5x3.5=29.75 and 17x1.75=29.75. did i build it right? and if i didnt what are the specs on the box i built?

The thing you need to keep in mind is that ports done that way are finicky. A 3.5 inch wide volume of air will behave differently than the 2 1.75 inch wide volumes of air.

[Jonathan Tyler Ecton-Rodriguez]

It's 2.6 net with subs installed, about 32Hz tuning.

can you help me out with one i just built using Torres and Sketchup?

did i build it right for 36.86hz and 3.18cu.ft? torres doesnt give me the dimensions of the port so i did some guessing and used the dimensions i entered. the port i entered was 14.5"x3.5"x24, so i subtracted the 15.5 from 24 and was left with 8.5" left and since the back wall part of the port is only going to be half as wide at 1.75" i did the same length on both sides, since 8.5x3.5=29.75 and 17x1.75=29.75. did i build it right? and if i didnt what are the specs on the box i built?

The thing you need to keep in mind is that ports done that way are finicky. A 3.5 inch wide volume of air will behave differently than the 2 1.75 inch wide volumes of air.

would it be better to cut the walls shorter and keep the whole length of the port 3.5" wide?

[Jonathan Tyler Ecton-Rodriguez]

Once the subs are in (0.1 cubic feet each) your box is 2.7 net @38Hz, your center line length is 27.375", just enter that 27,375 and set driver displacement as 0.2 and you will get something closer to what I am giving you.

for future reference how do i calculate that centerline length?