Vented or Sealed? Your Opinion. - Page 2 - Ranger-Forums - The Ultimate Ford Ranger Resource


Audio & Video Tech General discussion of audio and video for the Ford Ranger.

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  #26  
Old 01-16-2006
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Quote:
Originally Posted by n3elz
Yes, those are based on the "newer" design methodology which is much more robust and accurate than the old system we used.

Ported enclosures can be GREAT for lower sounds -- but they have to be much bigger to do that than is probably practical for a vehicle.

The nice old "ported horn" designs like the old Altec-Lansing "Voice of the Theatre" systems combined a horn loading for higher bass notes, and porting for lower bass notes. However, just one of these speakers would fill your entire cab, lol.

And there are online sites to teach and enable designing your own enclosures, but I've not spent enough time on the subject to advise you. Looks like someone's been doing their homework though (Sean)!
hey John, have you ever seen a transmission line enclosure? im going to be building a pair of them for our surround sound system down stairs.. but that probably wont be till summer.
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  #27  
Old 01-16-2006
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Nope. Toss me a link so I can see what you're talking about. Unless it's like the old Klipsch enclosures with their slanted woofers and tapered ports.
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  #28  
Old 01-16-2006
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Quote:
Originally Posted by n3elz
Nope. Toss me a link so I can see what you're talking about. Unless it's like the old Klipsch enclosures with their slanted woofers and tapered ports.
ill try to look around for a link, give me a min.

EDIT: here's a link that show's a few different designs of transmission lines.

http://www.t-linespeakers.org/design...ngs/index.html

they're basically like labrinths, that'll produce deep, non resonant bass. they're usually large, and a little complex to build. when done correctly, the enclosure will give you about 3dB of gain (much like just adding a second subwoofer to a regular system), but you'll be using just one sub (achieving the product of 2). the length of the enclosure is 1/4 the length of the wavelength of the speaker being used.

if i remember correctly, i think Bose made that little sound system thing a few years back (they had infomercials on all the time). it was a t-line design (if i remember correctly).

Last edited by Strider0O0; 01-16-2006 at 09:45 PM.
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  #29  
Old 01-16-2006
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Cool, thanks! We used to call them "labyrinth" enclosures. Never built one though.
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  #30  
Old 01-16-2006
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Originally Posted by bamaboy
ive never used a sealed box its all been ported for me, but as for going lower humans cant hear below 20hz, ive heard its actually 25 though so what do you need a sealed box to go below that for, you would be surprised at how many songs even go below 35hz, and only a handful get in the 20s, if you tune a ported box to 30hz you would be able to play down to about 25hz safely, but you wouldnt use it much anyway, i would rather have a ported box so i could use the extra loudness if i need too, and lets say you tune a ported box to 32hz you would have way more output from 28-60hz ish

as long as its no wierd shape box i can design one for you
Square/Rectangle box is good enough for me. Just want this sub to sound good:

http://www.onlinecarstereo.com/CarAu...roductID=14954
(prefer vented after thinking long and hard about what I want.)
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