how to tell if voice coil is blown?

[dcornelius08]

ok so i know this was a bad idea but i bought a subwoofer off of CL and it was dirt cheap so i assume there is something wrong with it. i hooked it up and everything was gravy, then after i listened to it for like 45 minutes certain notes started sounding idk how to put it, just different. mainly one song in specific. if any of you have heard this song box chevy by yelawolf. its the notes that are before the big boomy bass lines. i think it might be a voice coil because the boomy notes sound fine but the others just sound distorted like something is rattling. i thought it was something in my trunk but it turns out it has to be the subwoofer.

how can i be sure of this?

oh crap one more question, its a dual voice coil. so is it possible to wire just one to make it work just enough to tide me over til i get another?

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[dbeez 5,000+ posts]

Could be a bubbled former I had that issue on one of my shades.

 

[dcornelius08]

Could be a bubbled former I had that issue on one of my shades.

a bubbled former? i have not a clue what you said right there haha.

 

[dbeez 5,000+ posts]

The voice coil is wrapped around a former if it bubbles from heat then it will make a real wierd sound at certain frequencies.

 

[dcornelius08]

sounds very plausible thats what happened. because half of the notes sound fine but certain ones just sound like sh** haha. is it possible to just wire the one voice coil that is good?

 

[dbeez 5,000+ posts]

Ita not a bad coil its the former so no matter how you wire it it will continue to make it.

 

[hispls 5,000+ posts]

Could be something mechanical that has come unglued and is flapping. IMO a former that has outgassed would rub all the time, and this can be fixed sometimes by prying off the dustcap and pushing in some very stiff shims on the side with the bubble.

 

[dcornelius08]

thanks guys for the advice, im gonna see what i can do tomorrow when i can actually see outside cuz it will be to difficult to get it out of my car in the dark lol