JBL 2241H subwoofer - makes buzzing noise - Page 2 - diyAudio
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Old 15th November 2012, 06:39 PM   #11
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Thanks for the great advice.
I was thinking of carefully cutting the dust cap out and then gluing it back on, if I found the problem and fixed it.

I tried pressing on where the foam and surround meet and that did not stop the vibration.
I also tried pressing other parts that were moving but that just caused buzzing against my fingers
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Old 16th November 2012, 12:44 AM   #12
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Ok, I'm going to cut off the dustcap!
Some body stop me!
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Old 16th November 2012, 09:52 AM   #13
djk is offline djk
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Tap sharply on the dustcap/cone assembley.

If you hear a 'sproing' type sound the coil has loose turns and the driver needs to be reconed.

Sometimes when you remove the cone the coil looks like a burnt Slinky toy.
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Old 18th November 2012, 05:12 PM   #14
badman is offline badman  United States
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Update? Curious to see what you did to that poor woofer
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Old 21st November 2012, 12:27 AM   #15
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Decided not to use it and put it on ebay.
Needs too big of a box.
Also I discovered the 2242H has much lower distortion, according to JBL pdfs for the two drivers.
I'll get a messed up 2242H that needs fixing at some point though
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Old 21st November 2012, 01:52 AM   #16
DUG is offline DUG  Canada
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If there is an "auto shutdown" feature on that sub there could be bad relay contacts.

I had one like that.
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Old 21st November 2012, 01:55 AM   #17
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Quote:
Originally Posted by DUG View Post
If there is an "auto shutdown" feature on that sub there could be bad relay contacts.

I had one like that.
I think you had something different.
This is just a driver.
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Old 22nd November 2012, 03:14 AM   #18
DUG is offline DUG  Canada
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Amplifier problem maybe?
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Old 22nd November 2012, 04:27 AM   #19
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I have had several JBL drivers where the spider comes loose from the voice coil in a small spot and that causes a buzzing, clicking sort of sound. the glue used on the Spider/VC seems to dry up and crack and the spider will break free in a small area and as the cone moves outward, the spider clicks as it moves on the VC former. doesn't do it on the inward moment as the spider is compressed by the cone.
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Old 23rd November 2012, 04:50 PM   #20
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Quote:
Originally Posted by Zero Cool View Post
I have had several JBL drivers where the spider comes loose from the voice coil in a small spot and that causes a buzzing, clicking sort of sound. the glue used on the Spider/VC seems to dry up and crack and the spider will break free in a small area and as the cone moves outward, the spider clicks as it moves on the VC former. doesn't do it on the inward moment as the spider is compressed by the cone.
Thanks buddy
It wasn't the spider, but after I check the spider closely, I started to check the surround, more carefully. Looks like where the surround meets the cone there are a series of cracks that go around the cone and make noise.

What kind of glue can I use to fill the crack? Or what kind of glue is used to glue between the cone and the surround?
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