I have a hairline crack in my sub-cone. I couldn't see it at first, I could only hear a slight rattle. On closer inspection I saw a very small crack about .75" long running from the rubber surround to the dust cap (Its an 8" sub with a huge dust cap)

How can I fix this? I've heard that clear nail polish can be used to fix torn surrounds, but what about a cone?

I think the cone is IMPP, but I'm not sure. The speaker is an elemental designs eD9kv.2

Thanks,
Ryan

 

nail polish, superglue,silicone,fiberglass resin

 

Five-minute epoxy.

I have a couple old Alpine 10" low end subs that got brutally busted up... Hit 'em with epoxy about 18 months ago and they've been going strong ever since...

 

Have you tried contacting E.D. regarding the crack? I know the driver is now used but if it wasn't a user error maybe Ben can help you out. I would try that route first.

 

I sent a question off to eD just before writing this thread.
I wrote this to compare what the manufacturer says to guys who have done it before.
The crack is not a defect; it is my fault. I was driving up a steep parking garage ramp when the guy in front of my stopped. The guy behind me got so close I was afraid I was going to roll back into him, so when I got moving I kinda let the clutch out quickly. So up a steep hill, quick off the clutch caused my speaker box to fall backwards, and the cone hit some stuff on my trunk floor. Therefore, the crack is my fault. I should have had the box anchored better.

 

I've also had good luck with the 5 minute epoxy, quick and easy.

 

Here is what eD wrote to me:

"first note that ANY modification to the sub like this will void the warranty in the future, should something happen to where you would want to send it back. The cone is a indeed Poly, so there are a few options. We would suggest either a small amount of CA glue, or possibly a small amount of a flexible silicone sealant."

What is CA glue?

Whatever repair method I do, I would like to blend as seemlessly as possible (I am planning on repairing the cone from the rear so it can't be easily seen).

What is CA glue?

 

CA glue= CyanoAcrylate: Crazy Glue
Try to find some Gel type. I like Locktite brand in a nice squeeze dispenser.

 

I have done repairs on paper PA woofers with RTV or a rubber cement (keeps pliable and doesn't adversely affect the paper. The glue should not affect the chemical properties of the cone material and should simply hold the material in place.


RTV- room temperature vulcanizing

 

Goop works great.