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

[txdog27 10+ year member]

AHHH.....**** thats a nice looking rear end lol

whats the xmax on those babies?

 

[Nut Hair Trick 10+ year member]

xmax is 28

 

[THATpurpleKUSH 5,000+ posts]

I'll use this thread an excuse to ***** out my setup, the external aeros work pretty well in trunk cars too.

 

[bgowdy 5,000+ posts]

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.

lmfao....... does this really work? its actually genius

 

[KyleBechtold 5,000+ posts]

since no one said it completely yes.. the benefits of the port being out is you don't have to make the box bigger to incorporate its displacement and in some instances if you can't reach the tuning due to the port needing to be bigger than the box.. SA-8s are an example in that case.. the benefits of it being in is that its not terrible to look at..

 

[mast240 10+ year member]

Also, it should be mentioned that porting outside the box will slightly change the tuning, if the original plans called for the port to be internal (i.e. a box designed for an internal aero, and then having the aero moved to the outside)