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Old 21st September 2012, 10:59 AM   #11
diyAudio Member
Join Date: Feb 2008
Location: Jackson,michigan
I used to have Aluminium dust caps on the drivers of my Sunn 610 and they would crack all of the time.
I had them reconed like 4 times and before a year was out they would start to crack again.

Terrible noises came from them and I would have to carefully tear them off.

The last time I had reconed those old frames I had paper dust caps installed and I enjoyed them for years until there final demise.


P.S By the way nice repair job!!!!
I use superglue or epoxy for repair depending on what they are, and I have found flowable silicone for windshield repairs works great for foam surround repairs as well.

Last edited by geraldfryjr; 21st September 2012 at 11:05 AM.
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Old 22nd September 2012, 06:52 AM   #12
diyAudio Member
Join Date: Sep 2012
Hey thanks Gerald, I appreciate that!

It did indeed sound horrible with the little tear in the original aluminum cap. When I heard that noise, I was convinced that it was the voice coil rubbing inside and tearing itself to pieces; that was a few years ago and I pretty much gave it up as a lost cause.

I fired the speaker up earlier this evening to test, connected to a Stromberg-Carlson AU-34 PA amp, and it sounded GREAT! No more horrible noise; it sounded just like a speaker should.

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