Easy Question (FG/Box Volume)

[chibahawk 10+ year member]

Okay.. I plan on turning the side of my trunk into a ported Fiberglass enclosure. I started out just making a Subwoofer pod but I've had a few ideas.

Question: For a ported box, is volume = to volume? confusing question lol I'll break it down. My box is not going to have a very straightforward shape as I'm thinking of just making the pod I've got right now connected and sealed to a narrow but long wooden chamber. Basically I'm just trying to get plenty of cubic feet which a normal FG pod would not allow for.... but do weird shapes impede on ported enclosures or is any volume that is completely sealed off for one chamber yield the same results?

..phew

Click to read more...

 

[dbornotdb 10+ year member]

Took me a couple reads, but I think I understand the question.

 

You have a fiberglassed "pod" that you have made for the sub, and you want to connect that to a narrow enclosure to get more cubic feet for the sub to breath in. Right?

 

That will work as long as the "pod" is connected and sealed right to the narrow enclosure. And that that said narrow enclosure is also sealed up right.

 

Then you get the fun task of figureing out the total airspace so you can then tune it to the proper frequency.

No.............I can't do that for you with out it being in front of me.

 

Pics of your "pod" and the narrow enclosure would aid in answering your question.

 

[kuijo 10+ year member]

Wood and FG? Better cover the wood in the glass or its going to look pretty ghetto. But if its sealed correctly it'll add volume. Make sure you tune it properly with the extra space.

 

[chibahawk 10+ year member]

ghetto blastin at its finest aaha.. naw im not doing it like that.. im gonna make this look realllll clean =)

in any case dbornotdb you got it on the nail.. I figured as long as everything was completely sealed I'd be fine but then I saw some thread on how the port has to be a certain distance away from things... but I'll worry about that later..

also I figure the wood chamber will be easy to get the volume of and for the pod I'll just have to use water to figure out volume.. will include loads of pics when I jump back into the project..

NEW Question: How do u guys go about finding the physical volume displaced by your subwoofer? I thought that would be a spec that maybe companies record but looks like it isn't..

Thanks for replyin

 

[kuijo 10+ year member]

What sub? The company should list it on their site.

 

[chibahawk 10+ year member]

Pioneer's ts-w3002SPL

 

[chibahawk 10+ year member]

okay so pioneer doesn't actually list the displacement volume but we've got plenty of people running these.. anyone have a somewhat accurate measurement? thanks