Sealed to Ported, is it possible?

[jarredondo1999]

I built this stealthbox for a friend of mine. It was for a honda crosstour which at the time, he was using a 12" Dayton Audio sub, which required 2.0 cuft sealed enclosure with polyfill. Here is a pic of the box. I used packing peanuts to come up with the 2.0 cuft.

Now, he sold that Dayton Audio sub and now has a Sundown X and wants to go ported. Is it possible to do a cylinder port to this stealthbox? If i remember correctly, the depth of this box was like 11.25.

[timc31610]

I think you will need more net space and the port would have to be external.

[timc31610]

Very nice looking box though!

[jarredondo1999]

I think you will need more net space and the port would have to be external.

Very nice looking box though!

Thanks, maybe he can downsize to an SA12?

[timc31610]

Thats a good possibility, did you calculate port displacement yet?

[jarredondo1999]

I am going to do it now with that SA12 since it requires 1.5-2.0 cuft ported, per the website.

[jarredondo1999]

Okay, per the torres calculator the port volume should be 0.32 cuft for a 2.0 cuft box and tuned to 35 hz. Does that sound about right?

[timc31610]

What size port? 4"?

[Joe X]

Okay, per the torres calculator the port volume should be 0.32 cuft for a 2.0 cuft box and tuned to 35 hz. Does that sound about right?

Without the actual dimensions of the box it's all speculation. I would give no less than 2 3" flared aeros to a SA-12.

[timc31610]

I think a few more pics of the box could be helpful along with some measurements. Were are you planning on putting the ports? Also once you install the ports it changes your net airspace which may throw your tuning off some because you won't be tuning a 2cf box, it will be smaller because of the port displacement.

Edit: I was not completely awake.