Does a port have to be on the inside of an enclosure? Can it be run out of the box?

[txdog27 10+ year member]

I have an odd question to ask...

Does a port on a vented subwoofer enclosure have to be inside the enclosure or can it be run outside of the box as well......

For example to explain what I mean...

Say a 4" diameter by 30" length aeroport was used on an enclosure....

The port is usually mounted to the face and run into the box.....

Is it the equivalent to run just 6" into the box with the other 24" outside of the box?

Now this is not an example of what I am wanting to do....just a general idea to see if it is even possible with the same results.

Click to read more...

 

[mylows10 5,000+ posts]

yes it can be done ,but usually works best in hatchbacks

 

[txdog27 10+ year member]

how so?

 

[TaylorFade 10+ year member]

yes it can be done ,but usually works best in hatchbacks

Lol. Has nothing to do with the vehicle. Externally mounting a port makes it more efficient. To get the most out of your port, they should all be mounted like that. But because of the length and the fact that it looks stupid, it's hardly ever the case.

Tou answer your question specifically, 6" inside and 24" outside is just like 30" inside... but better. Lol. I mount ALL of my SPL ports externally and most of my dailys. IDGAF what it looks like as long as it's loud.

Just a few examples. Lol.

 

[txdog27 10+ year member]

**** taylor.....that last pic with the 8 American Bass subs is sick.....how did you make that port on that one and how did you mount it to the box?

Also good to know that this is possible and actually better....learn something new everyday lol.....plus opens up whole new design possibilities for me now....

Thanks for the info bud

 

[mylows10 5,000+ posts]

heres some pics of my friends crx Competitor Stats: Team SSC - Dan you can see the ports coming out the back of the box

 

[txdog27 10+ year member]

heres some pics of my friends crx Competitor Stats: Team SSC - Dan you can see the ports coming out the back of the box

Lol...there team name should be IBCC instead......"Itty Bitty Car Committee"..............lmao I'm just jokin around man....those are some nice setups....looks like they do well at comp...

 

[mylows10 5,000+ posts]

from 153.8 -157 from 4 different crx cars

 

[TaylorFade 10+ year member]

**** taylor.....that last pic with the 8 American Bass subs is sick.....how did you make that port on that one and how did you mount it to the box?
Also good to know that this is possible and actually better....learn something new everyday lol.....plus opens up whole new design possibilities for me now....

Thanks for the info bud

The PVC flares you see were done by making a form for whatever size port we were making. Then we heated a big *** pot of cooking oil to 350*. Soak the PVC in that oil for a minute or so and it gets pretty buttery. Push it down onto that form and voila, instant aero. Well, after it cools, of course. It's messy business, but makes some pretty sweet ports.

On that port (it's an 8"), I made one side flared, but pushed down on it a little further to flatten it out essentially making it a mounting flare.

Should be noted that I rarely mount the actual flare to the box. Normally, I make the cutout juuuuust big enough to beat the tube into and then mount the flares on either side. This makes manipulating tuning and/or impedance rise easier because you can just slide it in and out and test how much in and out is the best combo.

 

[txdog27 10+ year member]

Good info....thank you very much

 

[Nut Hair Trick 10+ year member]

But because of the length and the fact that it looks stupid, it's hardly ever the case.

I'm sorry, you are 100% correct. It does look stupid lol. I would never have a huge bagpipe looking thing in my trunk. But for those that do have them and are happy with them, that is all that matters.

 

[txdog27 10+ year member]

I'm sorry, you are 100% correct. It does look stupid lol. I would never have a huge bagpipe looking thing in my trunk. But for those that do have them and are happy with them, that is all that matters.

What sub is that in your sig??

 

[Nut Hair Trick 10+ year member]

Death Penalty 12

 

[txdog27 10+ year member]

Death Penalty 12

Is that the original motor structure? Looks different than the ones I have seen.....

 

[Nut Hair Trick 10+ year member]

It's the 2011 model. Before I pulled the trigger and bought it, I never once saw the first picture of one on the internet. The only picture I ever saw was the stock photo which was really small. Here's my thread with more photos in it:

http://www.caraudio.com/forums/subwoofers/526295-new-ia-death-penalty-12-a.html