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Custom fiberglass enclosure for skar vd-12 2


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I have a 95 mustang gt convertible. My plan is to run 2 skar vd-12 2's in the trunk. I want to build 2 fiberglass enclosures one left and one right tucked up in the quarter panel/wheel well area. So my current thinking is too build out one as test piece/ mock up. Then fill it with water to measure the internal volume. Then figure a port design for it. Im shooting for somewhere around 1.25 cf to 1.5 cf. And tuning it for around 35-40 hz.

Anyone have any better ideas how to measure the volume of very irregular shaped box?

Any suggestions on port design/location? Im probably stuck with a round tube port. Im guessing 2.5 in dia about 5in long. I have a 3d printer so I can pretty easily make a mold to build a venturi port out of fiberglass.

 

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Welcome to SMD 

Kenwood / HELIX / Linear Power (For The Love Of Music) / Brutal Sounds / OverKill Electric Co 

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Custom work requires pics, thoughts, trial and error. 

Yes, peeps are interested, but something like this requires more “hands on” rather than giving advice over the inter webs ... 

Kenwood / HELIX / Linear Power (For The Love Of Music) / Brutal Sounds / OverKill Electric Co 

Questions About Sound Quality ?? Try Here ... Sound Quality, What does it REALLY mean ?? 

SMD SOTM Winner "White Lightning" 1997 GMT400 Chevy Silverado   

"The Green Dickle" 1994 GMT400 Chevy "Phantom Dually"   

Randal's 2007 Chevy Avalanche (we haven't named this one yet)

Dylan's "Brutal" 17 Chevy Cruze RS Hatch                         

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This is the area Im working with. The speaker will sit in front of the tail light aimed toward the center of the dash. The port will be up by the fender well pointed parallel to the speaker. Im going to re-do the wiring thats in the way to try and get as much space as I can.20190513_095621-800x600.jpg.d817f42c418a329830cb4c047010295a.jpg20190513_100515-600x800.thumb.jpg.0f3dbfe4b1a3a80eaf01f38fb3193fe2.jpg20190513_100449-600x800.thumb.jpg.6286a77cfeedfdffa4217ddeaadb22fe.jpg20190513_100534-600x800.thumb.jpg.ad660affb16b4e13f10578e68121ffb8.jpg
 

20190513_100443-800x600.jpg

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Packing peanuts is a good idea. I'm playing around with some ideas on how to cut out the center of my speaker rings out after the box's are done. Im thinking cutt almost all the way through, leaving maybe a 1/16th of an inch. Then using my dremel to finnish them when I have the volume sorted.So far filling them with water is the best idea I can come with. Doesn't add much work either. Just have to give the speaker rings and the base of the box a coat of resin so they are water proof ahead of time. Packing peanuts should get me close enough to get the diameter of the port tube. So I can make rings to mount them.Then use the number I get with the water to get the lenth right.

Any thing I need to look out for with making port tubes that have a bend in them?

With such a small box would a smaller dia shorter port tube be better or larger longer tube?

 

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