problem with subs exerting each other out in wall

[phemps 10+ year member]

i just walled my car with 8 tens. the box is sealed and the box is a little bigger than the recomended net volume for the subs. when i turn it up to a certain level the subs start to move at different time and go out of control. is this unloading? is the improperbox size causing this? its not too much bigger than recomended

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[denim 5,000+ posts]

Are the sub woofers all wired correctly?

 

[CRXBMPN 5,000+ posts]

either having some phase issues or you wired some of them out of polarity with the others.

is it always the same ones in the same position in the wall?

 

[loud-n-low 10+ year member]

subs wired out of phase?

 

[Immacomputer 10+ year member]

Could be poor loading and uneven pressure in the enclosure. Try separating the enclosure into multiple chambers.

 

[cx-7heaven 10+ year member]

Pop the wall with a 9v battery to see if all the subs move the same. If thats not the problem, I would say you went too big and are unloading.

 

[cx-7heaven 10+ year member]

Also, what is recced size and what did you make it to?

 

[phemps 10+ year member]

Are the sub woofers all wired correctly?

theyre in series parralllel and im pretty sure theyre all in phase. it only happens when i start to turn it up more

 

[phemps 10+ year member]

Also, what is recced size and what did you make it to?

recomended is .75 and id have to do the math but it came out to around .9 something net per sub i believe

 

[phemps 10+ year member]

Could be poor loading and uneven pressure in the enclosure. Try separating the enclosure into multiple chambers.

this would be very difficult ha

 

[cx-7heaven 10+ year member]

theyre in series parralllel and im pretty sure theyre all in phase. it only happens when i start to turn it up more

You need to pop the wall with a batt, series/parallell is easy to screw up, esp with that many subs. I did it with 8 dvc 8's, and you gotta watch what you doing

 

[phemps 10+ year member]

You need to pop the wall with a batt, series/parallell is easy to screw up, esp with that many subs. I did it with 8 dvc 8's, and you gotta watch what you doing

ok good idea ill try it. i def see how i could have messed it up casuse the wiring was pretty intense i took my time but who knows i could have messed up. but is there even a way to accidently screw up polarity in a series parallel circuit without changing the final ohmm load? i thought i had it down

 

[cx-7heaven 10+ year member]

ok good idea ill try it. i def see how i could have messed it up casuse the wiring was pretty intense i took my time but who knows i could have messed up. but is there even a way to accidently screw up polarity in a series parallel circuit without changing the final ohmm load? i thought i had it down

All you have to do is switch 1 neg and pos around, and you screw the whole thing up, and sometimes it wont affect final ohm load if you reverse it

 

[phemps 10+ year member]

All you have to do is switch 1 neg and pos around, and you screw the whole thing up, and sometimes it wont affect final ohm load if you reverse it

alright i have to see if i have a battery laying around

 

[phemps 10+ year member]

i checked with the battery and theyre in phase