First time box, time to failure.

[Montana]

Alright, so I am running two SA-12 D4, they ask for 2cubes each, so I was looking into a 4.5-5 cube box, that should be correct, right?

I believe I am going to run one single big chamber inside, not sealed inside for two chambers, what is the requirements on the port? How does one go about deciding proper size?

First box build, spare me.

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[West]

I would just get a good box builder to make one.

PS. I feel your pain on the local audio shops... it's really pathetic what some of them have.

 

[mylows10 5,000+ posts]

too bad you are so far ,i have 2 already done

 

[Montana]

View attachment 26536065

Alright, so, how does this look to run two SA-12 D4s?

This will fit in my trunk, it will take my whole trunk, but it will fit. I would move the port side wall from a "L" design to running parallel with each other, so it doesn't restrict air flow with a wall design like that, I feel like it would. I tuned to 35Hz as it calls for that on company specs, it claims it needs 2.0 ft^3, so its 4.0ft^3 running two, right? How much displacement does the subs account for? I can run up to a 41 width and that bumps it up to 4.6ft^3. Thanks for all the help!

 

[cyn 10+ year member]

View attachment 26536065Alright, so, how does this look to run two SA-12 D4s?

This will fit in my trunk, it will take my whole trunk, but it will fit. I would move the port side wall from a "L" design to running parallel with each other, so it doesn't restrict air flow with a wall design like that, I feel like it would. I tuned to 35Hz as it calls for that on company specs, it claims it needs 2.0 ft^3, so its 4.0ft^3 running two, right? How much displacement does the subs account for? I can run up to a 41 width and that bumps it up to 4.6ft^3. Thanks for all the help!

Do not use RE audio box designer... not good at all

 

[Dtrom 10+ year member]

As far as your sig goes, my local shop pushes jl on ppl reallll bad... I was talking to the sales rep there that I purchase through, and he says with a questionable look on his face, "yeah some guy came in here with 6 kicker 12's and some sundown amp, never heard of sundown".

 

[Montana]

Ha, darn car audio shops!

And alright, don't use that site to design, what should I use? Why is it so bad, are it's numbers wrong? I'm

 

[cyn 10+ year member]

Subwoofer Enclosure Calculators, Fraction to Decimal, Parallel, Series, Port Length and Volume Calculators

 

[naughtyca 10+ year member]

have you thought of aeroport, its the easiest to build and easier to calculate for tuning

 

[pro-rabbit 5,000+ posts]

There are many ways to go about designing. The biggest thing is to understand what goals you have and the space you actually have to work with. Then the real fun starts. lol