Need help on port lengths for dual sub box

[ImaSlacker 0]

just need to know if anyone could tell me the port lengths inside this box

 http://www.ebay.com/itm/4-0-FT-3-TUNED-32Hz-SLOT-VENTED-CUSTOM-MDF-SUB-ENCLOSURE-2-10-INCH-SUBS-/400326246337

 

id rather make the box instead of buying it lol, but if anyone could be so kind to help out thatd be great

[EPerez 236]

I'm not sure it's possible to tell from just looking at that. What's your dimesions, subs, and tuning frequency? I can get you the port length if you give me that info.

[ImaSlacker 0]

Dimensions (W x H x D): 33" x 16-1/2" x 21"

1-1/4" Reinforced MDF front baffle

4.0 ft^3 slot-port tuned @ 32Hz

and 2 sa-10s

[EPerez 236]

So you have a 1/2 inch baffle to go on to the 3/4 inch front? I would just put a 3/4 inch baffle on the front to make it 1.5 inch

[ImaSlacker 0]

confused already lol

[EPerez 236]

EDITED!

I would do the double baffle 1.5" because of each baffle being .75".

Port dimesions:

15h x4w

60in2 of port area

***Port length is 33"

Box ends up being 3.75 cubes tuned to 32.5hz.

That's the best I can get it to what you want with having enough port area. If you can add on to any dimesions it would help lower tuning and gain more volume.

Edited April 6, 2013 by Bassink

[ImaSlacker 0]

i made it on google sketch and i just need the port parts so i can get the dimensions to cut everything but i dont wanna mess it up

[ImaSlacker 0]

oh i see so instead if making it 1 1/4 make it 1 1/2?

[EPerez 236]

Yea just use two .75" pieces of mdf for the double baffle. I accidently put in wrong numbers for the first time but I edited my last post and everything is correct now.

[ImaSlacker 0]

where are you getting 30 inches for the inside port?

 

like the walls inside that make the airflow out of the box

Edited April 6, 2013 by ImaSlacker

[EPerez 236]

Check it again lol I entered it all right now.

 

What do you mean where am I getting it from? I add length until I get the right tuning.

[EPerez 236]

The port is 33" long. You know how you see the L shape, that's what it's length is.

Edited April 6, 2013 by Bassink

[ImaSlacker 0]

well when i make the 33 inches it doesnt fit to make the L shape it goes outside of the box lol

 sorry for my noobness

[EPerez 236]

The length will go in a L shape. You start from the port opening and continue to go all the way until you reach 33". Does that make sense?

[ImaSlacker 0]

oh i see yes lol 

[ImaSlacker 0]

should i make the L ports 3/4 Width? or 1 1/2?

[EPerez 236]

I would only have the double baffle 1.5". Everything else .75".

[ImaSlacker 0]

ight thanks bro

[EPerez 236]

Yea no problem

[frogcase2002 393]

Are you just needing a design to build your own box? Or needing that exact one?

[ImaSlacker 0]

im planning on building that exact one