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jellyfish420
08-03-2005, 06:23 PM
i found this design on the web, and i was wondering how good it is.
i know absolutly nothing about these types of designs. i would like to learn how they work, so if someone could elaborate a little it would be great....at least if this design is anywhere near accurate...

http://img88.imageshack.us/img88/2618/596508131full7qk.jpg (http://imageshack.us)

djman37
08-03-2005, 06:26 PM
I read they are tweaked per the driver T/S. if you have excel, i have something for you.

jellyfish420
08-03-2005, 09:51 PM
I read they are tweaked per the driver T/S. if you have excel, i have something for you.
i think i have what your talking about...but pm me anyways, please :)

flakko
08-03-2005, 09:55 PM
wow.... that looks hard to make :(

djman37
08-03-2005, 10:15 PM
i think i have what your talking about...but pm me anyways, please :)

will do, in the AM.

JimJ
08-03-2005, 10:16 PM
wow.... that looks hard to make

Piece of cake, compared to a "real" folded horn or transmission line.

Omarvelous
08-03-2005, 10:26 PM
the hardest thing to do would be that rounded edge, and with the right tools, even that's not hard.

All the measurements are there, all you have to do is mark and cut.

CUSTOMIZING it to fit your Sub is that hard part.

Buckshot
08-03-2005, 10:44 PM
the hardest thing to do would be that rounded edge, and with the right tools, even that's not hard.

All the measurements are there, all you have to do is mark and cut.

CUSTOMIZING it to fit your Sub is that hard part.

And be accurate...

vosschs
08-03-2005, 10:46 PM
wow.... that looks hard to make :(
eh, not that hard, just get the angles right thats the hard part, use a router to cut dados in for the port walls that would be hard :up2somet:

jellyfish420
08-04-2005, 07:33 AM
so does it look like it would work???

theCybe
08-04-2005, 09:02 AM
Well,

It would work,


But I don't see any height measurements :)

james33440
08-04-2005, 01:51 PM
I'll stick with mine. :)

bumpin_blazer
08-04-2005, 02:14 PM
i am also wondering how you plan on making this without height measurments.

JimJ
08-04-2005, 02:19 PM
Another problem I see, unless I'm blind and I missed it, is that there's no cutout for the driver. In a design like this, you really need to know where to mount the driver to get the line length right...

bumpin_blazer
08-04-2005, 02:24 PM
So basically what everyone who's built them is saying it ain't that great b/c it is completly drive dependent and you have no height measurements or where to put the sub.

JimJ
08-04-2005, 02:32 PM
So basically what everyone who's built them is saying it ain't that great b/c it is completly drive dependent and you have no height measurements or where to put the sub.

Who's saying it's not good?

There are no accurate calculators for mass-loaded transmission lines, for example, but they've developed quite a cult following for people that like their sound. Just takes time to tweak it. Same thing for a design like this.

DIYaudio would be a good place to go to get more info about how to tailor the plans to your own driver.

james33440
08-04-2005, 09:18 PM
Who's saying it's not good?

There are no accurate calculators for mass-loaded transmission lines, for example, but they've developed quite a cult following for people that like their sound. Just takes time to tweak it. Same thing for a design like this.

DIYaudio would be a good place to go to get more info about how to tailor the plans to your own driver.


Couldn't of said it better.....

jellyfish420
08-04-2005, 11:42 PM
Who's saying it's not good?

There are no accurate calculators for mass-loaded transmission lines, for example, but they've developed quite a cult following for people that like their sound. Just takes time to tweak it. Same thing for a design like this.

DIYaudio would be a good place to go to get more info about how to tailor the plans to your own driver.
well i've been working on my own design for the past couple days,
kinda mas-loaded quarter wave/rear horn...but the longest i can get the dam line is ~135" (~100Hz) any suggestions?

bumpin_blazer
08-05-2005, 12:58 AM
Who's saying it's not good?

There are no accurate calculators for mass-loaded transmission lines, for example, but they've developed quite a cult following for people that like their sound. Just takes time to tweak it. Same thing for a design like this.

DIYaudio would be a good place to go to get more info about how to tailor the plans to your own driver.

i didn't mean for it to come off as completly not good just saying for most people with the lack of the remaining factors, it would be tuff to do.

jellyfish420
08-05-2005, 11:04 PM
i've got another idea...if i was to wall it off at the b-pillar, do you think that would give me enough room for 2 15" horns? i got probably 9-10ft^3 in the hatch and probably ~13-15ft^3 in the back seat so we're talking about 25ft^3 :up2somet:

InhumanAcura
08-05-2005, 11:16 PM
i've got another idea...if i was to wall it off at the b-pillar, do you think that would give me enough room for 2 15" horns? i got probably 9-10ft^3 in the hatch and probably ~13-15ft^3 in the back seat so we're talking about 25ft^3 :up2somet:

dude, just build a wall...horn or no horn, its gonna be loud...If you opt to do a horn, i forsee a problem with how your going to be able to build the "port" accurately...

jellyfish420
08-06-2005, 12:01 AM
dude, just build a wall...horn or no horn, its gonna be loud...If you opt to do a horn, i forsee a problem with how your going to be able to build the "port" accurately...
i've been thinking about that :( if i did a horn i think i would do 2 seperate enclosures, put them in the car, bolt them together, then build a "wall" cover plate...

_DjScrew_
08-06-2005, 03:28 AM
i uploaded the excel plans here a while back, may want to do a search for that, but that is probablly what djman sent you.