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-   -   Refoam of f113 (https://www.audioaficionado.org/showthread.php?t=49552)

thomasagase 02-17-2021 09:09 AM

Refoam of f113
 
I recently acquired a used f113 that must have been really abused by the previous owner.
I'm considering replacing the surround foam the driver myself, because of a large rip in it.
I was curious if any of you have tackled this task, and would like to hear your thoughts / story.
Looking at the way the driver is installed, it appears to me that complete disassembly would be required...
Any thoughts?

W9TR 02-17-2021 09:39 AM

I’ve reformed several drivers. Not difficult, more tedious that anything. The hardest part is finding the appropriate surround. If you can get one from JL you’ll be miles ahead. Then it’s removing the old surround without damaging the cone. That’s the tedious part.

Now I use a local company that rebuilds drivers, mostly musical instrument ones.

If you are not concerned about appearance, you can use a flexible silicone adhesive to repair the tear in the surround.

thomasagase 02-17-2021 10:40 AM

I have the confidence in myself to perform the refoam,
I guess my real question is how to remove the driver from the cabinet, besides exploratory surgery...

Audiophilehi 02-17-2021 10:44 AM

There are a few you tube videos on how to do this. It doesn't appear to be to difficult.

https://www.youtube.com/watch?v=3mqi6-pGNdo

thomasagase 02-17-2021 11:02 AM

I've watched all of the videos that I could find, and have reformed speakers in the past. So I have accepted the challenge of repairing the driver.
I'm assuming I'll have to remove the amplifier off the rear, to get to the fasteners....

Formerly YB-2 02-17-2021 10:30 PM

Have you looked thru Dan's thread on working on the F113? May be some useful info on the amp removal, etc.
https://www.audioaficionado.org/showthread.php?t=43298

thomasagase 02-18-2021 09:14 AM

I have, thanks!
There is no doubt, that is valuable information....[emoji16]

UFTE 02-18-2021 11:01 PM

I always thought of a subwoofer cone like your best friends girlfriend; you don’t touch it! All kidding aside, after watching the re-foaming video I had no idea how robust the components of the subwoofer appear to be. He wasn’t too bashful about handling any of it. It was interesting to watch and see how you take everything apart, and put it back together. Thanks for posting....:thumbsup:

getfrog 12-13-2021 01:59 PM

Not sure if you completed this repair, but here is a video I made of how to remove the woofer. I have refoamed about 6 JL Fathom subs... I have also refoamed about 100 woofers/speakers over the past 25 years...
The Fathom subs are not difficult and they are much more forgiving than a high efficient fragile paper cone speaker! So you can be a little rough with them and be ok.
I personally like to play bass music through my subs while I am conducting the refoam.... It helps to push the woofer up to mate with the foam. Once they mate, you can keep pressing the cone/foam together and the bond gets stronger. Bass music playing also automatically seats the voice coil in perfect alignment and you can confirm that while making the repair in real time. After bonding is solid I get a fan blowing on the woofer to help dry the glue. I like to use Simply Speakers refoam kits. They have the best glue and the foam is the correct proper color. Hope that helps! :)

Video - https://www.youtube.com/watch?v=ymxytVlWy6k

thomasagase 01-05-2022 03:15 PM

Thank you so much!


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