How exactly does an adjustable port work?

[Germ305 10+ year member]

In the sense of how do you adjust it?....I've seen builds of enclosures with an adjustable port but could never quite grasp how you adjust it the only adjustable ones i do get are the aeroport ones lol Does anyone have pics or can explain to me exactly how it works?....Also how difficult are these to build vs a normal ported enclosure?

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[THATpurpleKUSH 5,000+ posts]

Well for mine I have 2 different length port tubes with my aeroports so all I do is unwrap the electrical tape that holds the sections together and retape in the desired section.

 

[i2ain2thunder 10+ year member]

deathbox isn't exactly a changable port to say.. ....but

well it's kinda like a tune-able port

 

[brodeisel 10+ year member]

well explain the changeable port

 

[i2ain2thunder 10+ year member]

I'm just thinking about how I'd attempt it, would be with like a slot port and just have some other panel of mdf cut to fit inside and take up exactly enough width to change the port tuning to the other desired frequency and you could even have different sizes for differing tuning. Then simply screw them into one another, not the best solution as it might not be air tight but it would work just fine.

 

[i2ain2thunder 10+ year member]

The deathbox has an adjustable baffle that changes the way the horn reacts to different frequency ranges, so you can basically move the baffle around inside the box and inside your own trunk/back. A useful feature if you do not already know how to tune a ported enclosure to your vehicle's trunk/back.

 

[Germ305 10+ year member]

Ok i looked up a "Deathbox" and that is not exactly to what i was referring to...gimme a sec...someone here is selling a sub and box with an adjustable port.

 

[Germ305 10+ year member]

Owner of this pic is "Beach22" here on the forums i hope he does not mind as this is to gain knowledge...but i believe he stated its tuned to 34hz and can be adjusted to 48?

 

[Germ305 10+ year member]

Double.

 

[morespl 10+ year member]

You can make a box then you make the port and make a outer ring that covers the gap with different length or actual port are. So basically you cut a gaping whole in the box and slide the port in. By making the port you have a piece of wood that covers the left overs of the port that way you can take it out fast and efficiently. With this method you can also make the port a external port.

 

[Bettr n' Revrse 5,000+ posts]

When you move it (adjust it) it sounds different...... //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[Germ305 10+ year member]

When you move it (adjust it) it sounds different...... //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

It was soooooo simple! lmao...Na but i feel so dumb when it comes to enclosures like i need drawings or pics :\

 

[Bettr n' Revrse 5,000+ posts]

I need to learn more about tuning and building cuz with my Cad experience I think it would be simple for me to design...

 

[sacsking916 5,000+ posts]

I believe in subzeros build log he has pics of his interchangeable port

 

[Germ305 10+ year member]

I PM'd him...hopefully he will come drop some insight