If the drivers are reverse mounted in an enclosure, will it make the use of fiberfill pointless, as the heat is dissipating outside of the box?

The fibrefill dissipates the heat from compression, and since the subs are still compressing air inside the box, it should act the same way. keep in mind that the volume of the cone will now be added to the box volume, so the box is slightly larger(really should not make a big difference).

__________________
2004 300M SPECIAL
Alpine CDA 9833
Alpine Pxa-h701
Alpine Rux-c701
Rockford fosgate p400-4
Rockford fosgate p4004
Hifonics BX 1205D
JBL c608 GTi
JBL p963
Infinity 2.5" center channel
Alpine type R 12"(2)
all active SQL set up with 2000 watts rms

dont do it... its just for looks... inverting a sub is dumb! there is less cone area! most db brag cars dont do this because area is a subs best friend!

its not dumb and its not only just for looks. there is the odd time you need to invert a sub becase you dont have enough mounting depth inside your box.you may get slightly less cone area but in going to bet that you would never notice it by ear.ive witnessed someone who inverted their sub ported box and gained a very slight dbl increase.....

__________________

?? What ??

I Agree with Hofulstrof . . .
In regard to cone area it doesn't make a difference. A sub needs BOTH the box and the external air.

I can use your exact reasoning to prove that inverting a sub is BETTER! The box is necessary for containing the air pressure created by the sub. The less the box leaks that pressure, the more that pressure will be transferred into sonic pressure. Therefore, if you invert the cone, you have more cone area to build up that necessary pressure with. Then, wouldn't you want more of that cone area working on the enclosed space?

Truth is internal and external area are equally important, and one way does not prove to be better than the other - provided that you know what you are doing with sub phase when inverting.

__________________
Nostalgia just isn't what it used to be.

the increase was most likely from a change in the tuneing freq not the fact that he inverted the sub.

on the topic veeman had it right (Y)

__________________
Talk to me! msn --> aaronone321@hotmail.com

Alpine 9805
Kicker S10L5 (2004) in ported box
Power Acoustik LT980/2 500 rms @ 4 ohms mono
Power Acoustik LT720/4 70 rms @ 4 ohms x 4
JBL 5 1/4" components

exacty, i should have clarified that is my earilier post

__________________

thats the one exception but it sounds as iff he has enough space to mount them properly. 4 10's inverted does not hurt as badly as 4 10's mounted basket in. believe me, i have herd it, and felt it, and now i hear it less.

Nope. I don't believe you.
There is no theory to back your claims. Even if you've "herd" it, that means you rounded them up like a cowboy "herds" his cattle.

Hearing it doesn't mean anything unless it is the exact same install, with the same subs, amps, car, and box. The two installs could have been done differently to effect changes which you would attribute to the inverted mount.

The only issue that comes into play is phase/polarity. If the wiring is not inverted also that would throw the subs out of phase and could negatively effect sound output. However, according to one of your other posts, it doesn't matter if two independant subs are wired opposite of each other. Try that and hear the difference that it DOES make.

So until you herd some hard facts out to pasture, I don't believe a word of it.

__________________
Nostalgia just isn't what it used to be.

With regards to polarity, how can you determine if a sub is suitable to have it's polarity reversed? With some drivers I have owned they warn you not to switch polarity on the voice coils. Is this just to prevent people from throwing their system out of phase or is there a possibility of damaging the sub?