due to the space i have to work with i have to have the sub upside down. will i have to do something different when i wire it up or do i just swith the phase 180. the box is also going to be ported.


srry if this type of ? has been asked before.

yeah, your fine.

You might not even have to wire in 180, depending on the time difference between your sub and your mains

I'd mess with the setting, see what sounds better. I got bored, and inverted my subs, and it sounded better in correct phase, rather then 180 phase.

ok i feal better now. thanks alot

the only issue, is if you've got an inverted and a regular mounted sub in the same box.. then the polarity on the inverted sub needs to be switched.

Not all the time sunflowerpower, I left my wiring the same 100%. My deck has a subwoofer reverse phase option. Leaving the sub exactly how it was originally hooked up, I inverted mine. It sounded better like that then when I reversed the phase.

From what I've read, you only need to reverse the phase if it causes cancellation with other subs/speakers.

I think he is referring to when you have one driver inverted and the other one mounted normal.

Only thing I can think of being an issue, is hearing the air moving out of the vent pole.




Elemental Designs
Performance.Mobile.Audio.
alexl@edesignaudio.com
Warehouse Manager

hey guys, can you invert a single voice coil sub with ported box?or can be done only with dual voice coil?i've got a deck also which have a reverse phase too.

ive never understood why this is done. why exactly do you flip the sub around rather than having it sit in the box normally?

The only reason for it to be done, is if you cannot fit the speaker in the enclosure due to depth issues, or becuase the back of the speaker is more visually appealing than cone/surround.


Elemental Designs
Performance.Mobile.Audio.
alexl@edesignaudio.com
Warehouse Manager

i only did that before cause the cone on my other p3 cracked...so reversed it and no one knew. yes the vent for the pole does make noise, but when the trunk is closed you wouldn't know

Alex Lindeman wrote:The only reason for it to be done, is if you cannot fit the speaker in the enclosure due to depth issues, or becuase the back of the speaker is more visually appealing than cone/surround.

Cmon speaker man, thats not the only 2 reasons. Say you want the most air space out of the box as possible. You would invert the sub to gain extra air that the mass of the subs magnet and other internals were taking up. Not that much of a difference, but it can add up.

I'm a newbie lol. But wouldn't the sub being upside-down also help the voice coils, etc cool a little better. Isn't the air in the box a little warmer then the air in your trunk when the subs heat up? It would provide more air space outside the sub internals for better cooling, just my $.02.


*2000 Cavalier sedan*

i just dont understand i guess. i always thought the purpose of the box was to hold the subs create the frequency and such... and i thought the sub's rear had to be inside the box to create the sound. but the way you guys are describing it all you need is a flat board and mount the sub to it and done. idk, to me it seems like just throwing a sub in the trunk with no box and expecting it to work, lol not gonna put anything out for bass. but hell, if it works... awesome!!!!

lol, sorry... its one of the few things i just dont get about stereos. i always bought a box, put the subs in and left it alone and it worked fine.



Edited 1 time(s). Last edited Tuesday, June 12, 2007 2:01 PM

z yaaaa wrote:i just dont understand i guess. i always thought the purpose of the box was to hold the subs create the frequency and such... and i thought the sub's rear had to be inside the box to create the sound. but the way you guys are describing it all you need is a flat board and mount the sub to it and done. idk, to me it seems like just throwing a sub in the trunk with no box and expecting it to work, lol not gonna put anything out for bass. but hell, if it works... awesome!!!!

lol, sorry... its one of the few things i just dont get about stereos. i always bought a box, put the subs in and left it alone and it worked fine.

Its all about changing of pressure via sound waves.

Be that behind or in front of the cone. In a sealed of vented enclosure, there is a seperation of the front and rear waves.

If the speaker is mounted inverse, the waves are still present, just that the motor is exposed.

You still need to put them in an enclosure, you just cant put them in the trunk, or mount them to a peice of wood. Its not enough front and rear wave seperation to give you output.


Elemental Designs
Performance.Mobile.Audio.
alexl@edesignaudio.com
Warehouse Manager

ok, now that made sense.

so basically, ppl do it for looks.