Question on a RE SX motor.

[ItsAJeepThing 10+ year member]

My friend came to me today and said his sub was sounding weird. So I pushed on the cone and there was obvious coil rub. I thought the coil just came unraveled because it was an older sub. When I took it apart the coil was still in tact. When I looked on the inside of the coil i noticed the coil had some scratches on a certain spot along with the same scratches on the motor. My friend ran over some railroad tracks and he said thats when it started doing this. Would a simple recone fix this? Or is the motor out of alignment? See pics below.

Thanks.

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[Imtjnotu 5,000+ posts]

it could be the former did that.....

 

[Imtjnotu 5,000+ posts]

do you have pics of the whole motor?....i think it was the former rubbing so the coil could have been out of alignment but dont quote me.....Contact SPLaudio

 

[ItsAJeepThing 10+ year member]

Will do thank you.

 

[SPLaudio 5,000+ posts]

please post a pix over the whole top plate strait on. if the gap is even between the pole and top plate it hasnt shifted.

a coil can rub on the pole for several reasons such as, when it was built the coil may not have been centered well and rubbed a little at high excursion new. but more than likely the spiders are damaged or really weak and when pushed beyond its limits it gets very nonlinear.

the polycotton spiders fi/re/dc uses dont like the heat from the coil thats why nomex is best it can handle the heat. read about nomex //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[matt_martin87 10+ year member]

It's a tad bit difficult to see but here ya guys go.

 

[Germ305 10+ year member]

Ok I really don't know much about building subs and what not but that really looks like the motor shifted.

 

[The_Grimy_One 10+ year member]

Ok I really don't know much about building subs and what not but that really looks like the motor shifted.

I was thinking the same, but it could just be the angle of the pic, he may have to measure it.

 

[06goat 10+ year member]

Normally if it shifts doesnt the glue just give the rest of the way and the top plate gets pulled to the pole? Thats what happened on mine at least.