Box Design Help/Input Appreciated

[Friskey]

Hey all,

I've spent quite some time designing many different types of ported boxes for an IDQ12v4.

Looking at the manufacturers specs I found on the internet says..

Gross Volume - 2 cu. Ft

Port Tune - 30 HZ

Slot Length - 23.45

Slot Opening 12x1.5

I'm looking at these specs primarily for my design

I would like to design a box that is kerfed on the back end and maybe on the front side as well, although not necessary I like to play around a bit. I would just like some input from you guys. I primarily listen to rap and this will be going in my Sante Fe.

Am I missing something? In this design I didn't put in the 45 degree corner pieces.. Any input is appreciated. I would also like to add to my design a support brace somewhere. What do you guys think?

Its late, my mind is fried.. Any info appreciated, thank you.

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[CSCStang]

The audiophile recs are for 2 net, not gross. 30 tuning is very low unless you listen to decaf, slowed or chopped tracks. I've found that 1.75-2 net with 35 tuning is very good overall with these drivers.

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[Friskey]

The audiophile recs are for 2 net, not gross. 30 tuning is very low unless you listen to decaf, slowed or chopped tracks. I've found that 1.75-2 net with 35 tuning is very good overall with these drivers.
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Thank you for the feedback. I guess I read the volume requirements the wrong way on the sheet and mistook Port Volume Gross for Gross Volume of the entire Box.

I did want to make a bigger box. However I just have one concern. With the bigger box my Port Length and Opening will be quite a bit different. Just sketching something up my new Port Length would be 36" and Port Slot 2.75". This is quite bigger than the manufacturer's requirements of 24" and 1.5" respectively.

I don't want to make a box that too big for the speaker, am I looking into these dimensions too much? Basically what I'm asking is it okay to stretch the Port Length and Port Slot to meet the tuning of the box? Also a Port Radio of 1:4.5 acceptable?

Thanks for the help!

 

[CSCStang]

Not sure what your box height is, but 2.75 port width seems excessive imo. Shoot for 2 net cubes with 30-32 sqin of port area.

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[Friskey]

Okay came up with a box..

17(H)x25(W)x14(D)

2 Inch Port, 31 Squar Inch, Net Volume 2.02, 34HZ Tuned. Port Ratio 1:7.75

Go higher numbers to account for the kerf that isn't account for.. What do ya think?

 

[CSCStang]

Okay came up with a box..
17(H)x25(W)x14(D)

2 Inch Port, 31 Squar Inch, Net Volume 2.02, 34HZ Tuned. Port Ratio 1:7.75

Go higher numbers to account for the kerf that isn't account for.. What do ya think?

Specs look good. With a kerf, the effective port length ends at the center of the kerf radius so take that into account.

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[Friskey]

Made up this design tonight should be about 2 cubic ft net..think Imma just go with this and see how it comes out, unless you got any other recommendations. Thank you for the help!

View attachment 26555945

 

[CSCStang]

Made up this design tonight should be about 2 cubic ft net..think Imma just go with this and see how it comes out, unless you got any other recommendations. Thank you for the help!

View attachment 26555945

Move the sub cutout to the left, closer to the port exit.

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