Okay....Here's one for the pros

[Hecta G 10+ year member]

I have designed to what I think I am ultimately going to use for a sub. It will replace most of the rear deck in my Jetta.

I did a rendering that you can see below that is transparent so that you can see what I have in mind.

Okay, be ya'll start calling every name in the book, let me explain why i want this particular design.

I originally wanted not to even be able to see the woofer i guess that's a 6th order sub, but then thought let's just build it and get it done. Now what lead me to this design is that I wanted to add symmetry to the design so that's why i added the two ports on the top.

Now sealed off one side and placed a tube so that air can travel out of both vents.

If what i have designed will fly what do I need to do to make sure that it will sound decent. My target is 30-35Hz.

Now if this design will not fly what do I need to do or change so that it will. Mind you I would really like to keep the top vents.

Okay, let me have it....http://www.caraudio.com/forum/images/smilies/scared.gif

Here's the rendering....

Click to read more...

 

[terra 5,000+ posts]

i dont even understand the rendering..

 

[MisterGrubbs 5,000+ posts]

The left side is sealed off from the right. There is a tube leading from the side the sub is on into the sealed side, and air is released through that port over there, as well as the port beside the woofer?

 

[Hecta G 10+ year member]

HUH??

//content.invisioncic.com/y282845/emoticons/wow.gif.23d729408e9177caa2a0ed6a2ba6588e.gif

No unnastan??

 

[MemphisCherokee 10+ year member]

hah, you pretty much just stumbled upon an aperiodic bi chamber

what is the internal volume?

 

[Hecta G 10+ year member]

Thanks Mista Grubbs for the explicating..

 

[BrianChia 10+ year member]

Is it going to be in outer space too? Because sound waves won't travel in a vacuum. //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[jmanpc 5,000+ posts]

Is that supposed to be an ABC box? If so, you're going to have to work on the ports a bit. But it would be a cool install //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[tommyk90 5,000+ posts]

Is that supposed to be an ABC box? If so, you're going to have to work on the ports a bit. But it would be a cool install //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Hence the post a few above yours...

hah, you pretty much just stumbled upon an aperiodic bi chamber what is the internal volume?

//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[iamamp3pimp 5,000+ posts]

oops

id seal hat other side off.....impossible to get everything right with any kind of ease

 

[Immacomputer 10+ year member]

That's not a design, it's a drawing.

It doesn't look like you actually have ports on top of the enclosure; they look like rectangular holes that only extend about .75" deep.

What you have done with the tube in the center is added a port that will not just pass air into the other chamber unless you play below the frequency that it is tuned to relative to the main chamber. Below this point, the port will short and you will have the two chambers acting like one. This is what happens in an ABC enclosure or a Dual Chambered Tri-Vented enclosure.

If you don't know how to design an enclosure, leave it up to somebody who does. Making a CAD drawing is not the same thing as designing an enclosure just like drawing pictures of jets is no designing a vehicle that can fly.

 

[Hecta G 10+ year member]

hah, you pretty much just stumbled upon an aperiodic bi chamber what is the internal volume?

//content.invisioncic.com/y282845/emoticons/eek.gif.771b7a90cf45cabdc554ff1121c21c4a.gif HUH??? Isn't that a medical condition of some sort..

Anyway, I will get you the volume, but is there anything that I can read that will explain this to me?

I wish i know more about acoustics my first love is mechanical.

 

[Hecta G 10+ year member]

Is it going to be in outer space too? Because sound waves won't travel in a vacuum. //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

LOL!!

Nice designs Brah!

 

[Hecta G 10+ year member]

Is that supposed to be an ABC box? If so, you're going to have to work on the ports a bit. But it would be a cool install //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Thanks for the input bro and have no problem working on the ports, now for the ABC thing.... ya lost me at A..

 

[Scoobydoo 5,000+ posts]

i'm not a pro but i did sleep at a holiday inn express last night