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Subwoofer Box

Posted: Mon Oct 11, 2004 3:01 am
by sylonien
Hey guys.

I was wondering what the actual differences are between:
  • Sealed
  • Ported
  • Band pass
I'm using a 12" sealed box with about 1cu. of volume for my JBL sub. And what's that business of shoving that "wadding" or cotton like stuff inside the box?

Thanks for any help! :D

Posted: Mon Oct 11, 2004 5:06 pm
by Josh_PoloGTi
All you need to know:

http://www.x-bb.org/~efmax/123_amg.htm

(crap website, fantastic information)

I have one of his boxes and it's awesome!

Posted: Mon Oct 11, 2004 8:11 pm
by sylonien
Thanks Josh. :)

Very long and factual and I agree with you, crappy looking website. :p But I shall check through it.

Posted: Tue Oct 12, 2004 12:00 am
by sylonien
Actually going through that site didn't really clear my mind. Rather confusing as its very technical and I didn't have a clue what it's talking about.

Why don't you guys tell me if this is any good and will it fit in the back of the Polo 9N?

http://www.caraudiocentre.co.uk/product ... duct=20690

Thanks!

Posted: Tue Oct 12, 2004 8:37 am
by carmadaaron
i think that will take up the whole boot!

well i think autoacoustics do custom made boxes that fit in the wee sections that are above the wheel arch (i hope u know what i mean :lol: )
(well bits behind the rear tailights)

Posted: Tue Oct 12, 2004 2:56 pm
by sylonien
Yup do know what you mean or where you mean. But they don't like particulary nice in my opinion and they stick out, if you know what I mean now! :P

Posted: Tue Oct 12, 2004 8:47 pm
by ^Adam^
as a rule of thumb:

sealed - can handle more power, usually 'tighter' bass, usually drop lower, easier to build, easier to 'get right'.

ported - more efficient (go louder with less volume), can be tuned to specific frequencies, if designed and built right, can sound awesome!!!

bandpass - dont really know too much about them.

Posted: Tue Oct 12, 2004 9:32 pm
by SiDaBa
carmadaaron wrote:well i think autoacoustics do custom made boxes that fit in the wee sections that are above the wheel arch (i hope u know what i mean :lol: )
(well bits behind the rear tailights)
Do they actually do one for the 9n though, thinking it might be more efficient for me at the mo.

Posted: Wed Oct 13, 2004 4:32 pm
by sylonien
@SidaBa - I believe they do make it for the 9N. Not entirely sure.

@^Adam^ - Thanks for the help. What do you have? I shall see how much it is for a ported one then just to try out, 'cos I have a sealed one at the moment. Are ported ones more expensive or bigger?