Search for "ABR"...

(yes, foam rot.)

Sorry guys, I think I know the answer myself. A sort of cardboard must have been used that was glued both to the metal plate and frame. But where is the cardboard? There was a lot of rubbish inside when I opened it. That could not be the cardboard was it?

Thanks Mika, have seen these threads (not thoroughly though) but I saw pictures where extra speakers has been added in this metal plate. Was that the purpose of this plate to cut holes for new drivers?

This is the result of my new reclothed RL60🙂

Login to view image Login to view image

Leslie,

never seen drivers in that plate. There are 2 versions of RL60:

One had the ABR Mika mentioned. Looks like that's the one you have: The plate was the radiator and had a foam "ring" like a driver unit. Almost all of those are rotten nowadays.

There was a fix with another plate a little bigger instead that had a sort of plastic tube glued onto and no more foam rings. It was screwed firmly into the frame.

The debris inside of your RL's are the remainders of the foam. It is very hard as the softener disappeared with time. I had a lot of it in my RL60's although they have already been retrofitted with the bigger tube-plates before I got them.

There is a thread somewhere with nice pictures where I learned this beside looking into my RL60s. Had to search toughly to find it. Maybe someone has a pointer and remembers...

   Gunther

EDIT: found a picture of my non-ABR version:

Login to view image

BTW: The red cloth matches the "redlines" much better than some fabric-selector-retrofitted M70's 😎

Here are two approaches:

/forum/the-workbench/bang-amp-olufsen-red-line-authentic-diy-abr-auxiliary-bass-radiators-successful-repair

/forum/general-discussion-and-questions/project-refoaming-abr-on-rl60-speakers-details-and-pics-inside

Never tried either myself. There was also a third one on an external site which replaced the original ABR with two more conventional round passive radiators, but that site seems to have gone unfortunately.

You guys are great, thank you very much, very helpfull!

By the way and don't laugh!!!!! The first speaker I have attched the metal plate straight to the speaker cloth with double side tape. Stuuuuuuupid!😳😳

Now I have to try to remove the plate from the cloth😡

hemenex wrote:

BTW: The red cloth matches the "redlines" much better than some fabric-selector-retrofitted M70's 😎

Haven't you noticed Gunther that I changed the RL into WL😁