Does it looks like cone material rot ? Subwoofer 12inch

[dannyjmf]

Ok members

I have a used subwoofer salvaged from junk ... The woofer is in working condition voice coil is still in good condition no bottoming out coil rubbing noise. I plan to use it for my subwoofer project just to found out its cone has small little pinholes as shown ... Because it is quite a Number of pinholes some already can seen the light from the other side and some holes started to form too. So i wonder it is worth to fix these holes as a few more might getting same problem too. Or it a kind of cone material has gone rotten? Thanks

 

[TBTL]

Water damage typically looks different and would affect the whole cone. These holes look like something pointy has caused them. You can glue small pieces of paper to the backside of the cone to repair it.

 

[planet10]

a rubbing coil may have nothing to do with the pin-holes. A light coat of “puzzlekoat” will seal the holes What is the surround condition like?

dave

 

[nigelwright7557]

I accidentally put a screwdriver through a cone while tightening the speaker bolts.
I filled the hole with some glue and it lasted for years.

 

[Brian Steele]

Perhaps termites or some other insect caused that damage..?

 

[dannyjmf]

Perhaps termites or some other insect caused that damage..?

i have no idea because it was salvaged item from junk

 

[DAMIC]

Looks to me like acid spill.

 

[JMFahey]

No, too small and sharp for acid.
I also think mechanical damage, some sharp spikey object was thrown over it or it was carelessly put face down over some junk.
You reclaimed it from junk after all.

A small drop of carpenter´s glue over each hole will not look nice but effectively seal it.

Push dispenser bottle tip over those passing through and slightly squeeze bottle, so some glue goes through and a small drop appears at the other side, then let all dry overnight.
As Nigel says, the repair will last forever.