simple porting question

[double 07 10+ year member]

Trust me......the bass will find its way out............I usually try and raise the part where the sub is about 3 inches above floor if mounting depth is still there for sub......This enclosure was pounding in the cab of the F150 it was installed in and BOY would she play the low notes.....

 

[scparrish 10+ year member]

thank you for that. I also didn't want to hide the beauty of this sub but am more than willing to sacrifice that for sound

 

[Drummer65 10+ year member]

2 2" ports do not equal one 4" port... 2 2" ports are half the port area of a 4" port. Even a 4" port is really not enough port area for a 12" eclipse titanium you really need at least a 6" port if you can.

 

[scparrish 10+ year member]

wow alright if I build it down firing it will have a slot port I will just have to calculate the size I need based off of a 6 inch round port.

A 6 inch port seems pretty large

 

[Drummer65 10+ year member]

you have 2.2 cubes to work with after sub displacement? if you do a slot port you'll just be eating up precious cubic feet for the sub, id do an external 6" aero.

EDIT: oh wow this is going in the center console? You'll be fine with a 4" port then a 6" would be way too long. If you did a 4" you wouldn't need to do an external port

 

[scparrish 10+ year member]

an external port is not an option if I do a slot port I will build it on top of the existing design

 

[Drummer65 10+ year member]

yeah i just saw this is going in the center console. Do a 4" port and id tune low 30-34hz depending on your preference

 

[scparrish 10+ year member]

honestly I am unsure of tuning I was thinking 32 or 33 hertz

 

[Drummer65 10+ year member]

32hz is good, how much power you running? If your only going to do 1 4" port make sure you face the port away from you. With only 12" of port area you will probably get port noise. Make sure you use aero ports as well don't just use pvc, aero ports will help with port noise.

If you can make the box a little bigger you could pull off a slot port. It may be easier and you'll be able to gain a lot of port area. Id shoot for at least 28". The port displacement will be around half a cube so you really need to make your box bigger if you want to do a slot port.

 

[scparrish 10+ year member]

For a slot port I can build on the top of the box and style it into the console so it wouldn't take away from the cf of my box design. I am looking at a slot port about 9 inch wide 2.5 inch tall and 23 inch long which would be 32hz sound about right

 

[Drummer65 10+ year member]

yeah that would be better then the 1 4", Id go with that. And yeah 23 inches long is right for a 32hz tunning

 

[scparrish 10+ year member]

awesome I can finish drawing up this design it should look killer I just hope it sounds as good as it looks

 

[double 07 10+ year member]

We want pics when its done!!!!!!!!!!!!!!!

 

[scparrish 10+ year member]

I will be starting the build tomorrow I am excited

 

[pro-rabbit 5,000+ posts]

If you have the room for it, sub down with a slot port down as well. If done correctly will work out nicely, but with a 12" you may be a bit limited.

I didn't look to see what year/make/model you have, but I have done this several times with great success. I have also done several sealed down firing enclosures that work great.

The issue you will find yourself in with the eclipse is ensure you have clearance. Those will move a lot if you are giving them enough power.

As for other ideas I have read/seen in this thread. Meh, they will work as well as I have done a few of them. Just not my choice.

If you want when I get back on Tuesday I can do some modeling and gauge the response of a few options in your actual application. Takes out a large part of the guess work.

 

---------- Post added at 11:16 PM ---------- Previous post was at 11:16 PM ----------

 

I will be starting the build tomorrow I am excited

Guess no waiting haha...

Good luck man, I'm sure it will turn out just fine.