Fixing/patching a loudspeaker driver with paper cone

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Zilch

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So some time ago I got an old Philips radiogram.  Based on the styling I immediately assumed it to be from the 1950s.

Upon opening it up, I found a very nice, very mint pair of Philips AD 3800 M drivers.  8" full range with the octagon frame.  Sadly one of them had some holes poked in its cone and whizzer :headbanger:


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At first I really didn't think I wanted to fix the holes, but OCD got the better of me :tongue:

My first experiments (with printer paper) involved me using a q-tip with hot water to manipulate the paper in place, then put a dab of SUPER GLUE on it.  This was clearly not going to work as it added too much overall mass to the cone, and it also didn't look the part.

I then contacted Andre, who likes to casually mention things.  One of which was the fact that he has fixed paper cones in the past.  I asked him how he does it, and he says the following...


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So that was it!  I did some more experiments on printer paper, and the results looked very promising.

What I ended up doing was very simple.  Use hot water and a q-tip to manipulate the paper from the exit wound.  Mix some wood glue with water (I made it 1 part water, 1 part glue).  Use another q-tip to spread the watered glue on both sides of the cone.  Cut open a tea bag with scissors, then use the q-tip with the glue to lightly hold the piece of tea bag, and place it on both sides of the cone.

Here are some pictures of the results...


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This worked very well!  I patched it last night and checked this morning.  When rubbing my thumb across the piece of tea bag and paper cone, it was clear that the glue solution worked like a bomb!  Does not feel like it's about to come off, or anything; it's on there for good!

Thanks for looking!  Hope this helps someone :thumbs:
 
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