Yes you are correct, my mistake sorry 😳 never mind, I could sell them on ebay as memory foam for small pets !

Superb link Puncher, cheers. 😁

I think i'll offer my services as an ABR repair man ! Satisfaction guaranteed, just send your faulty ABR's by post email me here mattybrillo@hotmail.com

Puncher,

Yes, I still refoam many ABR's (not using neoprene).
Still, it's nice to know that there are a stabile and guaranteed ABR refoam
service available in the UK.

Martin

Obviously refoaming them with anything is better than having no ABR's but the originals have a particular resonant frequency, I would like the material used to match the original's compliance. Without an original to compare I guess this is all but impossible.

Certainly, Puncher.

It seems Matt did exactly that if you look higher up in this thread.
Though I must admit not being able to see much in those little pics.
However, it does seem to me that, if the "after" shot is the one to the right,
the repair seems to have introduced some kind of hump in the lower midrange
if you look at the light blue curve, or maybe I'm reading it wrong, I never
used Adobe Audition.
He doesn't tell us where he got the "before" shot from. Safe to say that he
didn't have access to an original and yet complete RL60 ABR, I haven't seen one
myself for many years (and I've seen many RL's) and won't ever see one again I'm sure,
so maybe it was merely a shot of the speaker with no ABR installed
though obviously, that would be useless for comparison.

Matt, you will have to tell us a little more about your measurements if possible.

Martin

Hi Dillen, I took shots before and after the repair, using a mic, laptop and Adobe software. I don't think it was very conclusive. The shot on the left is without an ABR, and the other after my repair.

I have since written to B&O asking them for advice on the material to use. Their reply was that any appropriate material can be used

 ?!😮

Brilliant answer from B&O. 😂

In other words; They don't know and/or they don't care.

Martin

For a while I had some RL60's in my garage/workshop. These had the ABR's removed, have to admit they still sounded good. Although I was not able to compare them to a pair with the ABR's.

Craig🙂

Hi... or could I say "Hej"? Er du dansker?

I'm from Denmark, Humlebæk north of Copenhagen. I've just had a pair of Redline 45 for free together with a Beocenter 7700 and a Beogram CD 3500.

I'm having the same trouble as everyone else with the rottening foam in the bassport of the 45's. I'm not a wizzard with electronics, but I've managed to remove all the smuldered foam without damaging the speakers.

Now I wonder can you help me with a good solution for replacing/rebuilding the 'woofers'? Or can you offer any good advice if I have to do it myself?

Hvis du fx taler dansk og kan hjælpe mig med at oversætte/forklare noget af det tekniske lingo, som BeoMatt bruger i sin forklaring af 'how to do it', ville det være en kæmpe-hjælp!!

Glæder mig til at høre fra dig...

Mvh Mikael

Mikael,

Welcome to Beoworld !  🤒

You have a PM (in danish) - check your inbox in the upper right corner of this page.

Martin