I Found a perfect 12.5" PVC pipe!

General discussion for all questions based in the home audio/video world.
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flak_monkey
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Postby flak_monkey » Mon Jun 11, 2007 8:12 pm

Why you so STUUUPIIID?
You no hungry for eDuh, you hungry for

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ballstothewall
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Postby ballstothewall » Mon Jun 11, 2007 8:27 pm

Sonotubes are a cardboard concrete casting form for cylinders. They are fairly cheap too.
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Member02
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Postby Member02 » Mon Jun 11, 2007 9:06 pm

well, I've already got the tube, I'm just gonna make it look nice and tune it low.
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AsianInvasian69
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Postby AsianInvasian69 » Mon Jun 11, 2007 10:02 pm

yeah the sonotube used some concrete mold thing...blah its been way to long
just pm 95 honda he did one a long time ago ...i did too its just been forever.

ok a sonotube was a design where they use a tube and seal it off and run tube ports out the bottom and down fire the sub....it may be hard since your sub mounts directly into the tube...anyways thats pretty much what one is but im sure 95honda will be able to help you out more than me
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Member02
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Postby Member02 » Tue Jun 12, 2007 5:34 am

I wonder... could the tube work as a ported box if left open on the other end? It might have to be taller, but I've got another 12 footer I could go salvage (hehe, and my apartment has 12ft high ceilings!)

I've built spl boxes with larger ports than cone area, it works wonders at high freqs.
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TalNLnky
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Postby TalNLnky » Tue Jun 12, 2007 6:19 am

i had a sonotube up until... well... 2 months ago when I left... sonotube is cardboard... PVC will be awesome.... will it resonate... yeah... but what doesn't? Everything resonates. Honestly... PVC is like the holy grail of material for sonotubes as far as I know. Strong as hell... and still lightweight.

If you left the back end open it wouldn't be a ported box... it'd either be open baffle.... or TL.... but you don't have it very long.... so it'd be prolly closer to open baffle.....


do some google-ing... there's plenty of info on Sonotubes... there was also a guy that made some kickass TL tubes for use with 20 or 24" woofers.... and of course... .guy was a Washingtonian.... near seattle.


In fact.... i think 95honda said he knew the guy.... engineer or something.
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Member02
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Postby Member02 » Tue Jun 12, 2007 9:18 am

well, I have access to about 2-4 more of these PVC pipes around 10-12 ft long each... I only made the small one to use in my apartment

any suggestions of ideas?
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CBFryman
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Postby CBFryman » Tue Jun 12, 2007 12:39 pm

Member02 wrote:I wonder... could the tube work as a ported box if left open on the other end? It might have to be taller, but I've got another 12 footer I could go salvage (hehe, and my apartment has 12ft high ceilings!)

I've built spl boxes with larger ports than cone area, it works wonders at high freqs.


Quarter wave FTMFW. Get two 90* elbows. 14' total for 20Hz.
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Member02
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Postby Member02 » Tue Jun 12, 2007 1:00 pm

well... finding the elbows would cost money, the pipes are free at the moment... until the dump truck comes by to salvage them in about a month...

I can't imagine the elbows being cheap for 1" thich PVC 12.5"s across...
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CBFryman
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Postby CBFryman » Tue Jun 12, 2007 1:15 pm

You could build a miter box and make 45 degree cuts. Mate them and round them inside and out.

Imagine this big, heating radiator looking thing standing 6.5' tall pumping mucho bass.

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