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Audio Performance SK-F project

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smitske96 View Drop Down
Young Croc
Young Croc


Joined: 16 February 2016
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Post Options Post Options   Thanks (0) Thanks(0)   Quote smitske96 Quote  Post ReplyReply Direct Link To This Post Posted: 02 December 2019 at 7:00pm
Now the last uncertainty LOL I have some white school glue but it is water-based.
Apart from the applications (paper and other light materials) there is no more info on the container regarding it's composition.
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Old king coles View Drop Down
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Joined: 09 October 2017
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Old king coles Quote  Post ReplyReply Direct Link To This Post Posted: 02 December 2019 at 7:10pm
I'd assume it's just standard pva 
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smitske96 View Drop Down
Young Croc
Young Croc


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Post Options Post Options   Thanks (0) Thanks(0)   Quote smitske96 Quote  Post ReplyReply Direct Link To This Post Posted: 23 December 2019 at 7:59pm
The result:

I patched it up on four areas, looks good enough so far. 
After christmas some testing/measuring is scheduled.
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AndyWave View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AndyWave Quote  Post ReplyReply Direct Link To This Post Posted: 24 December 2019 at 12:32pm
Hi

Your reparation looks as it should. But a word of caution, if the patches glued are not on symmetrical pattern around the outer edge, there is a possibility of voice coil rubbing against pole pieces when cone excursion is high, as the patched part maybe now flexing in different manner compared to original outer suspension.

Same applies to repairing light or thin cones. If there is hole poked on one side, just apply same kind of patch on the opposite side to keep mass symmetrical around the voice coil and suspension.

In this case as it is a low mid driver, maybe not so much.
torturing electrons since ......
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Bams View Drop Down
Young Croc
Young Croc


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Post Options Post Options   Thanks (0) Thanks(0)   Quote Bams Quote  Post ReplyReply Direct Link To This Post Posted: 24 December 2019 at 12:48pm
seeing you are from the netherlands.. if u used "Knutsellijm" as used op school.. you are fine. reapply a few times though. i repaired some 15" jbls with it and they acted fine. not really waterresistant tough so make sure the speakerfoam is installed or such. 
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smitske96 View Drop Down
Young Croc
Young Croc


Joined: 16 February 2016
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Post Options Post Options   Thanks (0) Thanks(0)   Quote smitske96 Quote  Post ReplyReply Direct Link To This Post Posted: 24 December 2019 at 1:14pm
I did use "knutsellijm" LOL

It had to be repaired at two areas, both being on one half I did apply the same on the other side.
So now it is patched at four points (symmetrically and all backside). I don't expect to need much Xmax but it minor work to do it somewhat properly. 

I'll keep you informed the coming weeks Thumbs Up
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