voice coil wire slidding off former?

[Bbisig]

has anyone seen this or was this a factory defect. the sub just recenlty making a rubbing sound so i pulled it apart to find the wire on one half slid off the former about 3/16".

 

[Clipped]

is that a dual coil sub? if so it looks like one of the coils didnt have the right amount of adhesive applied before winding the outer coil...or maybe the machine ran out of adhesive at the wrong time.

the area of the coil seperation is where the magnetic gap is located.

most of the time approx 10-15mm above the centerline of the coil is where it is hung.

since i cant see any signs of blackened wire, it doesnt indicate the coil was too hot for a prolonged period of time...

unless of course you burped it for a split second with 4 times over rated power...there wouldnt be blackened burn marks.

you didnt hook up only one coil did you? that would cause it too.

what kind of sub is that?

 

[Eva]

What is the diameter of this voice coil? It doesn't look capable of handling too much power.

 

[Bbisig]

i think the previous owner only had one hooked up. oh well buying a new one soon. and its 100WRMS 2.5" coil

 

[only126db]

Seen it before.

Back in the day it was pretty common to have the adhesive give up before the coil wires.

Thats usually the scratchy sound you hear when your sub dies.

 

[ppia600]

They could have used a faulty adhesive that melted at high temps instead of burning, that could cause deformation. Quality adhesives won't melt, they'll burn. Kind of like comparing the plastics used for high temp parts like ignition coils to the plastics that melt like cheap kitchen bowls.

 

[jam-steven]

hello,audiobahnkid592,can you tell me the voice the detailed specification, I think I can provide some samples to you!