Many thanks for your advice.I have ordered the damping material through a dealer as you suggested.

Once both 8000's are fixed, I will check my pair of Beolab 6000's. According to the dealer, these seem to often suffer from damage to the rubber speaker surrounds. There is quite some info available on the web as well as repair kits. To be continued!

You're welcome MartD.

Yep, the rubber speaker surroundings of the BeoLab 6000 are almost always up te replacement after so many years. It has to do with the choice of material. I have replaced many in the meantime.

I can recommend the repair kits from AudioFriends (Dutch company). The kit for the BeoLab 6000 you can find link.
An instruction for how to it is

Dear Smuehli, the problem does not belong to every BeoLab 8000. If you have a BeoLab 8000 set with white foam, this problem does not occur. B&O at some point changed the dampening foam, the white foam does not pulverise and start sticking to the PCB and electronics.

By the way, MK1.5 does not exist, there's only MK1 or MK2. If you share the serial number I can tell which one you have and what build year it has.

For the replacement foam, I advise to contact a local B&O dealership. That's the easiest and quickest way and prevents shipping cost.

For the gaskets you need certain double sided tape. If you scroll through this thread, you will find the info and links where to find it.

Both Beolabs 8000 have been cleaned, fixed and now have the new foam installed. They should be fine for another 20 years of service :-).

Fortunately, inspection of the Beolabs 6000 revealed that the speakers are still in perfect condition, no deterioration of the rubber rings.

All's well that ends well.

@MartD: well done!

@dragonvid

If you look at page 1 of this thread, you will see a picture that shows all different pieces placed in position.

I just ordered the original damping material set from the local B&O dealer, only 10€ per set. Sound quality has hugely improved! It’s a universal kit for all BL 8000 models

I just ordered the original damping material set from the local B&O dealer, only 10€ per set. Sound quality has hugely improved! It’s a universal kit for all BL 8000 models