You are reading the resistor rings in the wrong direction 😕

It's really a 10 Ohm resistor (brown, black, black, gold). I think you already got the answer in your french post (my french is only very minor...)

The yellow might be a hint because this is a safety - non-flammable resistor that opens if overloaded.. I think they are called NFR (non-flammable resistor)

So you should't use an "ordinary" 10 Ohm.

But - I was opening one of my BL2500 just to find them - replaced by a  piece of wire 😉

This was new to me; they look original, correctly bent and inserted. It was serial no 11149xxx.

An older one (08826xxx) had the resistors looking like the one in your picture.

Did they change that in series later on, eventually because of the number of "burnt" safety resistors? Maybe Martin as an expert will chime in ...

   hx

thanks a lot.

I 've changed by classic 10 ohm resistors not NFR. it's ok the beolab runs now

I hope that it not will burn . you're scaring me 😉 

you think it's important to me  to change by NFR?

Well - it's mentioned in the service manual that you have to use the original part only.

If they are your speakers it may be up to you; if you give them to someone else and they make trouble then you are in trouble, too.🙁

In my speakers I've used NFRs from Vishay but they are not easily available. I had to take 100 of them.

The only thing that makes me wonder is that my newest ones don't have any resistors in them, they just inserted a wire bridge here.

   hx