My 1st Enclosure, Port help please

[FadedSpy 10+ year member]

I've got a pair of AB XFL 12's coming sometime near the end of next week and I'm wanting to get the box finished before they get here. I think I'm almost done but I'm not sure if my port is built correctly. My goal for this post is to see where the box is tuned.It supposed to be tuned to 33hz and be right around 4 cubes but who knows. Anyway, here are the pics...

Dimensions...

Outside Height = 13[/IMG]
Outside Width = 34"

Outside Depth = 28"

Port Board #1 = 20.75"

Port Board #2 = 3.75"

Port Width = 5" all the way through the curve

Used 3/4" MDF throughout

If I'm leaving anything out, please let me know. My port was supposed to be 26" so hopefully I calculated it correctly?!?! Please let me know. Thanks!

Click to read more...

 

[mylows10 5,000+ posts]

My specs are 13x32x28 port 5x11.5x26. 4^3 at 33 hertz

 

[FadedSpy 10+ year member]

Well, for some reason I made mine 34" wide...I just want to make sure the port is tuned correctly

 

[FadedSpy 10+ year member]

I know that 20.75+3.75+3/4" = 26 but I've seen some diagrams showing that you measure the center of the port all the way through, when I do that I get closer to a 30" port. That's why I'm concerned

 

[mylows10 5,000+ posts]

If anything. You may need to add an inch

 

[FadedSpy 10+ year member]

Hmm. It's already glued ;/ maybe if I add another sheet of 3/4" mdf to the front of the box that'll extend the port an extra 3/4"

 

[FadedSpy 10+ year member]

I measured from the edge of my port inside the box around the corner to the front of the box and that measurement is 26" which is what Torres told me I needed for 33hz. 26" is the inside measurement of my port but I think the port length itself is 26" did I do this right?

 

[FadedSpy 10+ year member]

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