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Author Topic: Dead Growler  (Read 4577 times)

Ivan Beaver

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Re: Dead Growler
« Reply #10 on: June 28, 2016, 09:25:34 pm »

Got the dust cap removed but no tinsel leads or other cool wires can be seen. So I peer thru the frame at the underside of the spider and that's when I see the burn mark.

Looks like I'm SOL. Replacement driver comes tomorrow. Just didn't want to toss this nice assembly.
At this stage-I would go ahead and cut out the whole assembly.

This is to give you some information.

The burn mark you see could simply be a weak point in the coil that finally failed.

Or the coil could be "nicely roasted".

The reason for further investigation is to give you a clue as to how hard you have been driving the cabinet.

If the coil is nice and clean-then the burn mark could simply be a flaw in that particular driver.

But if it shows signs of over power, then you need to look closer at your limiter settings.

I like to use failures as "information gathering" to help me reduce future failures-if possible.

Post some photos when you get it cut out, to get some more opinions on the failure.
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A complex question is easily answered by a simple-easy to understand WRONG answer!

Ivan Beaver
Danley Sound Labs

PHYSICS- NOT FADS!

Rick Scofield

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Re: Dead Growler
« Reply #11 on: June 29, 2016, 03:53:01 pm »

At this stage-I would go ahead and cut out the whole assembly.

This is to give you some information.

The burn mark you see could simply be a weak point in the coil that finally failed.

Or the coil could be "nicely roasted".

The reason for further investigation is to give you a clue as to how hard you have been driving the cabinet.

If the coil is nice and clean-then the burn mark could simply be a flaw in that particular driver.

But if it shows signs of over power, then you need to look closer at your limiter settings.

I like to use failures as "information gathering" to help me reduce future failures-if possible.

Post some photos when you get it cut out, to get some more opinions on the failure.

Dust cap off, looking down thru the coil, former and magnet.
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Rick Scofield

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Re: Dead Growler
« Reply #12 on: July 01, 2016, 12:10:11 pm »

in the meantime, here are the two (old on the left vs new on the right) drivers. Need to pick up some good sealing weather strip before installing the new driver.
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David Allred

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Re: Dead Growler
« Reply #13 on: July 01, 2016, 02:50:06 pm »

Apparently some increase in the Xmax.  Ya think?
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ProSoundWeb Community

Re: Dead Growler
« Reply #13 on: July 01, 2016, 02:50:06 pm »


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