Torn cone(ripped) on GK amp

[EBmm5]

My boys stuck something in through the metal grate, therefore tearing my cone on the speaker of my GK 4001 amp. Anybody have any ideas
on how to fix or how much should cost to fix. Thanks

 

[96tbird]

You can glue a tear with good results as long as the cone isn't deformed. Lots have used silicone and I heard one guy suggest an adhesive a few days ago but I can't remember it's name. Wood glue works fine too. They key here is that the voice coil has not been moved from its position. It is a tube that has wire wrapped around it ad it is suspended by the cone and the magnet pole fits inside the tube but doesn't touch it. There is another tube around the coil it can't touch either. If they touch you get distortion and the coil will overheat; there is very little clearance in there. So as long as the coil is still free in its channel you'll be ok. The paper just moves air and "trumpets" the sound coming from the coil (extremly simplistic analogy).

You can push gently on the cone with your fingers placed on the edges of the paper dome (dust cover) if you feel any scraping or binding of the coil, it's pooched.

 

[malcolm.mcintyr]

A patch of stiff paper stuck on with any white glue will work if there is an actual hole to be filled. As above, anything not involving the suspension or voice coil gap, isn't critical.

 

[chadds]

Fixing it so your boys don't do this again requires more than one post.

 

[Arjank]

I would not recommend the white wood glue since it dries up to hard. The glue used for book-binding is the stuff you want, it stays flexible and is excellent for glueing paper.

Just screw out the driver and post a picture here so we can give some further advise.

 

[JimmyM]

I always use rubber cement for cone tears, but I've done emergency repairs with duct tape and it works fine, too.

 

[Saxn]

There is a fantastic YouTube of a guy doing exactly this using white glue and a piece of paper towel. I tried it on a torn cone and it worked flawlessly.

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