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  #1  
Old 08-30-2011, 11:25 PM
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Default 4th order design for 4 Type-Rs

This was a design by request from someone who I dont believe is a member here but I figured it was cool so Id share anyway.



Was requested for a mix of rap/low end and rock. Is a blowthrough design for a truck.

Hoping I receive build pictures for this project.

Design is about 5 sealed and 10 ported. Yes, it is a 1:2 design. This is mostly coincidence and they arent always this way!
If you feel youre looking to do a similar setup and your subs are a good candidate for this design, it can be found/purchased here:
4xType-Rs 4th order bandpass blowthrough - $20.00 : TheBoxHouse, Enclosure designs

If you arent sure, shoot me a message and like any design Ill take a look and see how well suited the enclosure would be for your build.

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Old 08-31-2011, 01:56 AM
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im deff on here my friend
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Old 08-31-2011, 01:58 AM
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Was that you? Haha!
I didnt know. Nice to make the connection. Hope you get a build log going.
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Old 08-31-2011, 02:08 AM
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going to try here soon. guy stopped by today and picked amp up was waiting on this i gotta go thru and make a supplies list now.
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Old 08-31-2011, 05:37 PM
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Gotcha. If anything isnt clear just holler.
I would recommend rounding over the inner port entrance if at all possible. but if not it shouldnt cause any issue.

*waits*
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Old 08-31-2011, 06:01 PM
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Very nice. I'm looking to so the same with 2 15" in my truck.
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Old 08-31-2011, 07:29 PM
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yup getting wood tomorrow and i have 3/8 roundover for my router so that can happen
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Old 08-31-2011, 07:59 PM
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So why not a v just asking?
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Old 08-31-2011, 08:11 PM
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Oxsign: Sounds good. Let me know when youre ready!

160s: It depends, but normally firing directly into a port isnt the favored option. Side-firing and having the port off axis from the subs gives them a wall to 'load' on.

Other reasons:
It allows the subs to be mounted from the sealed section into the ported section, which will add support to the woofers to the basket as normal from the baffle. As opposed to being inverted and mounting purely from the face which can be stressful on the woofers IMO. Not to mention it essentially adds a very small 'port' or chamber between the cone and the compression chamber. Which may be negligible but its best to avoid. Effects of this can be modeled in hornresp for reference.
Having the woofers in the ported chamber may help with cooling too.

Originally, I wanted to do two on each side but due to a relatively short height of 15 inches the sealed chambers would have been very skinny. Which that in its self isnt particularly a good thing, along with not allowing the woofers to be mounted through the baffle which would remove the support I mentioned earlier.

Lastly.. I do believe it is an easier build this way. Sometimes some things look cool, but something more simple may perform better
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Last edited by surreal; 08-31-2011 at 08:15 PM.
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Old 09-01-2011, 06:49 PM
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anyone have a good program to design boxes?
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