shifted my DC level 5 coils, how did that happen?

[basscort2009 5,000+ posts]

ok so today i was listenin to my stuff and it got quiet all the sudden, i was like wtf? so i went home and check my sub with dmm and it read 1.4 each coil (this sub is .7 voice coils)

i want to know how i shifted the coils on this sub at such low power? ive heard of it happen with a ton of power and some compression issues but i was only running like 1500 rms. what gives?

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[KyleBechtold 5,000+ posts]

is the cone stuck now?

 

[basscort2009 5,000+ posts]

now it still plays fine, just not near as loud

 

[KyleBechtold 5,000+ posts]

now it still plays fine, just not near as loud

weird.. ask rusty? maybe a manufacturing issue?

 

[basscort2009 5,000+ posts]

yea im callin him tommorow. it is so weird how it happend

 

[KyleBechtold 5,000+ posts]

yea im callin him tommorow. it is so weird how it happend

When my shit was shifted it was frozen.. I bought it that way.. shoulda tested it but I was a newb and dumb.. it was a 12w7 and I was excited

 

[basscort2009 5,000+ posts]

haha. thats wat happens when ya buy jl. i kid i kid

 

[thegreatestpenn 5,000+ posts]

take it out the box and look at it. could be something easy to fix like loose spiders (happend to my ap/spl)

 

[basscort2009 5,000+ posts]

its out now. spiders are fine. one sew spot came undone but it wouldnt make boh coils read bad ould it?

 

[hrtbrk1 5,000+ posts]

sounds like a spider problemo

 

[tommyk90 5,000+ posts]

You didn't shift the coils.

You popped 2 of the coils.

Let me explain. Dual .7 ohm coils are in reality quad 1.4 coils with 2 of the coils wired in parallel internally, hence dual .7.

You popped 2 of the 4 coils, which is why it reads 1.4 ohms on both sides. The same thing happened to my buddies MT.

Recone time.

 

[hrtbrk1 5,000+ posts]

oh ure coil went drunk....hmm new problem...

 

[hrtbrk1 5,000+ posts]

so he cant use the dual 1.4 coils anymore?

 

[basscort2009 5,000+ posts]

You didn't shift the coils.
You popped 2 of the coils.

Let me explain. Dual .7 ohm coils are in reality quad 1.4 coils with 2 coils wired in parallel, hence dual .7.

You popped 2 of the 4 coils, which is why it reads 1.4 ohms on both sides.

Recone time.

how do u know that they popped? they dont smell bad and they look fine. not sayin ur wrong i just want an explanation. thanks for the replies also guys

 

[tommyk90 5,000+ posts]

how do u know that they popped? they dont smell bad and they look fine. not sayin ur wrong i just want an explanation. thanks for the replies also guys

Just because they look fine doesn't mean they are fine.

I have two blown DD cones in my garage that "look fine", but put a DMM on them and they don't read anything.

You popped 2 of the coils.

/thread.