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Up firing passive radiator 5th/7th order????


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Posted

Hold up, you think you're doing that? Just how much space do you have back there? And how are you tuning the inside chamber? You do plan on building many of these until it's right, correct? A tuning nightmare is an understatement.

"Clipping" is the biggest forum boner now. It's like witchcraft... it automatically explains just about everything people don't understand.

My build log: http://www.stevemeadedesigns.com/board/topic/200295-gckless-2011-chevrolet-impala/

High resolution photos: Gilbert Kless Photography

Posted

Yeah basically the same size. I don't know how to design one of those but I would think that for a pair of 15's that inside chamber is going to be at least 4 cubes. Outside double that or more.

Have you measured the space you have? I think you're looking at like at least 15 cubes gross here. Probably more.

I'm ducking out. I'll follow a build log if you ever post one. Good luck.

"Clipping" is the biggest forum boner now. It's like witchcraft... it automatically explains just about everything people don't understand.

My build log: http://www.stevemeadedesigns.com/board/topic/200295-gckless-2011-chevrolet-impala/

High resolution photos: Gilbert Kless Photography

Posted

http://www.hi-fi.ru/bitrix/components/bitrix/forum.interface/show_file.php?fid=895465.jpg

damnt lol now your confusing me im doing the bottom 7th and instead of a port coming out i am using passive radiators

OK, now I know what you are trying to do. Despite what that picture calls that box layout, pretty much everyone else calls that a series tuned 6th order bandpass.

The more I look at it, the more I see how that image is all kinds of messed up. Its calling a regular ported box a 3rd order (its a 4th).

So are you planning is using PRs for the port between your front and rear chamber or just for the port between your front chamber and the outside of the box?

"Nothing prevents people from knowing the truth more than the belief they already know it."
"Making bass is easy, making music is the hard part."

Builds:

U7qkMTL.jpg  LgPgE9w.jpg  Od2G3u1.jpg  xMyLoO1.jpg  9pAlXUK.jpg

Posted

Is the "coil" they're referring to a simple 1st order passive filter?

Do you not plan on using any means of electronic crossovers? Because if you are... why aren't you including them in your nomenclature as well?

My ported box has a 2nd order LPF and a 4th order HPF. Does that mean my box is a 10th order?

SMH.

Posted

While the "orders" to refer to the rolloff in frequency response... they're caused by the energy devices used in the alignment.

The one thing I will grant you is the odd order rolloff of a PR vs the even order of a vent.

So if that's the case and you're using PR's for both chambers... You're building an 8th order?

Lmao.

Good times.

Posted

Don't forget its in a trunk

In a turbo and supercharged grand prix

Used to have a loud truck

2009 Corvette Z06, H/C/I, 150 shot, g force tune, 730rwhp/690rwtq

2013 F-150 limited, MPT Tune, leveled on 35"s

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