supravox 4th order band pass

[sub_arctor]

Hello

I want to build a sub based on the 12' supravox 285 gmf (Fs: 47 hz, VAS : 150 l, Qts : 0,39)

i can not change the driver because i already own it


this sub is a 4th order band pass load which is good from 40 to 150 hz (200hz in the commercial version and on the graph (with an equalizer perhaps)


the pics :
http://www.supravox.fr/kits/285sym.pdf

(i do not insert the pdf file because i do not know if i have the right to dot it, trademarks...)

this sub is about 100 liters (70 l behind and 24 l in front)

if I respect this volume, can i change the shape :

this is approximatively a cube, and i want a rectangle (72cm tall)
the speaker will be then placed horizontally

the port will be the same but at the top of the sub

I heard that for a sub, shape does not matter (because of the size of the wave)
is it still true for a 4th order bnd pass

Thanks for your answers

If somebody has some experience with a supravox 285 GMF of a reasonable size in bass reflex , i would be glad to hear his advices


thanks in advance for your plethorics answers

 

[Thawach]

hi

you can change it.


bye

 

[Lsharptec1]

Thawach,

You crack me up.

Larry

 

[schmeet]

Download winisd and have a look what the effect will be

 

[schmeet]

i believe though that aslong as the port length and the internal volume stay the same there will be no difference at all

 

[CANTAL]

Bonjour

La forme du volume d'un bass-reflex n'a aucune conséquence sur le fonctionnement de l'enceinte. Ceci dit, il faut éviter les tuyaux d'orgue, les tuyaux de poêle et les évents de très grande longueur et de faible section.

 

[Cal Weldon]

Hi Cantal,

This is an English speaking forum. If you wish to post in another language, please also post the English translation.

Thank you.

 

[Thawach]

cal....lol i don't know this language as the same.


regards/

 

[CANTAL]

Hi Cantal,

This is an English speaking forum. If you wish to post in another language, please also post the English translation.

Thank you.

So, that's a english translation for you overseas :

" The shape of a baffle does'not matter in a bass-reflex design.

Avoid stoves pipes, organ pipes, long and narrows ports."

I speak french with a french fella. I speak horse with my horse, not english.

One provocation : are irakis willing to speak anglo-american lingua franca?

 

[Thawach]

Hi CANTAL......lol i have just known that u have two version.

 

[Cal Weldon]

Thanks Cantal,

This what I get with a free translator:

Hello

The form of the volume of a low reflex cameras has no consequence on the functioning of the pregnant one. This says, it is necessary to avoid the organ pipes, the pipes of frying pan and the évents of very big length and of weak section.