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is it okay to use glue to repair a driver?

post #1 of 5
12/13/11 at 6:29am
Thread Starter 

I grabbed a pair of second hand B&W bookshelf speakers a couple days ago and I recently noticed that the right speaker's woofer distorts at around ~100 Hz. The left speaker is perfectly fine.

 

I examined the driver for a bit and I noticed that a small part of the cone at the center of the driver has become unglued from the cone. 

 

Would this be a probable cause for the distortion, and if so, can I just use glue to reattach that portion of the cone to the driver?

 

Thanks for your help!

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post #2 of 5
12/13/11 at 6:41am

If you just got them recently I would try to return them. 

 

If you cant return them, then yes, it is OK to glue small parts of speakers together - that's how they are made in the first place! 

Unfortunately, I dont know what kind of glue would be most suitable. 

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post #3 of 5
12/13/11 at 8:34am

Quote:

Originally Posted by sumathias View Post

 

I examined the driver for a bit and I noticed that a small part of the cone at the center of the driver has become unglued from the cone.


I'm not sure what you mean by this. "Driver" refers to a unit that includes a frame, a voice coil, a cone, a dust cap, a surround, and other parts I'm not mentioning. The "cone" is the main area of the driver. It usually has a hole in the center of it. There is usually a "dust cap" that covers this hole. Damage to the dust cap wouldn't affect the sound, unless a large portion of it has torn off and it is really vibrating. But yes, the dust cap can be glued back to the cone. I think wood glue would work, but you could probably check a place like partsexpress.com for "speaker" glue. Perhaps you could take a picture so we're all sure about what part of the speaker is broken.

 

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post #4 of 5
12/13/11 at 4:06pm
Thread Starter 

I snapped a picture of the driver in question. What I mean is that a small bit of the dust cap has become unglued from the cone.

 

http://imageshack.us/photo/my-images/189/img0018abp.jpg/

 

You can see the damage at the right side of the dust cap.

 

However, based on what you guys have been saying I don't think its enough to cause any real distortion. Should I just try gluing it back anyway?

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post #5 of 5
12/15/11 at 8:17am

I'd glue it back, as it isn't that hard to do.

 

As far as the distortion goes, you should be able to find the cause by inspection. Check for looseness of the driver surround (the soft area where the cone attaches to the frame) as well as looseness of the frame's attachment to the box (usually with screws.)

 

Also what kind of distortion do you hear? Is it buzzing?

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