What causes this? (sub question)

[slickemhoundd]

Ive never seen this before. With the stereo shutdown vehicle off (3 12's) if i push 1 sub (any) the other 2 move outward. They are all individually chambered (building new box at moment) so its not relevant to air pressure aside from the fact they are all ported. I tried this with my 3 10's i have in another box and no such thing happens. Ive never seen this happen and i creeps me out. If it is of any relevance they are all dual 2ohm wired in series/parallel. They all perform properly and hit as they should and all vc's are perfect as per multimeter

 

[com4tably.numb]

My guess

An electric motor can also be a generator when acted upon by an outside force,
I suspect that when you push in that sub, it generates a small amount of energy, but just enough to move the other subs.

 

[ford freak]

Ive never seen this before. With the stereo shutdown vehicle off (3 12's) if i push 1 sub (any) the other 2 move outward. They are all individually chambered (building new box at moment) so its not relevant to air pressure aside from the fact they are all ported. I tried this with my 3 10's i have in another box and no such thing happens. Ive never seen this happen and i creeps me out. If it is of any relevance they are all dual 2ohm wired in series/parallel. They all perform properly and hit as they should and all vc's are perfect as per multimeter

Are they individually chambered but connected in one box? If so the chambers aren't sealed properly. The air pressure is leaking from one chamber to another.

 

[com4tably.numb]

I initially thought the same thing, but he mentioned they are ported. A port would definitely be the path of least resistance, so I really don't think its air pressure.
*shrugs*

 

[ford freak]

I initially thought the same thing, but he mentioned they are ported. A port would definitely be the path of least resistance, so I really don't think its air pressure.
*shrugs*

It would still leak even if its ported. I have actually seen this with a poorly built box. I certainly could be wrong though.

 

[tweakedlogic]

An electric motor can also be a generator when acted upon by an outside force,
I suspect that when you push in that sub, it generates a small amount of energy, but just enough to move the other subs.

I think you have it.

 

[ford freak]

I think you have it.

Then why doesn't it happen with his other box?

 

[interscope8]

I think its something paranormal... You may have subs that have experienced something horrible or beyond this realm. I would suggest getting new ones ASAP. Its best to not mess with things out of our own world.

 

[jayzx30188]

theres many factors on this it depends on the design of the box and on how the subs are wired. I have 2 12's in a ported box. the port spaces the subs so air flow should idealy not effect the the out come of the other but it does! even tho my box is basicly a single chamber if you push gentally on one sub the other flexes! but in a way thats what you want to see even tho when pushing on the sub you still feel air flowing from the port and the other sub flexing this shows your box externaly is sealed right! but in his case you have a box that chambers each sub its self. so the walls may or may not be sealed right also is the chamber ported also or do you have just one port? if just one port the box isnt single chamber each sub. yes it may have walls on the inside but its for the sound to bounce and reflex the waves. next thing is how the subs wired? the wiring of a parelle setup could effect the others IF power is flowing.