BOSE callback from Audi starts

Hello to each other.
On Friday, I had a detailed call with the Mr. of Audi AG - to get to the point - for the V8 with the affected BOSE sound system to air a callback action at the dealers from next Monday.
The board has decided to do so in the last few days.
The KBA is already informed, the workshops as stated from Monday on the "Service Net".
From calendar week 28 the affected V8 should come to the workshops.
I was informed in advance of the chassis numbers concerned - but only in 1991 C.E. 1992 in part.
With the indication that my 93er also had this loud crack in the speaker and I bought a new board at BOSE in exchange, I was told that in the 93 model year a different capacitor than that of 91/92 was installed and thus the fire risk would not exist.
Here are the affected chassis numbers: the chassis number ranges of the worldwide
Vehicles with BOSE amplifiers:

Model year 1991
WOMAN: 4C . MG 000 101 to WAU ... 4C . MG 000 160
WOMAN: 4C . MN 000 302 to WAU ... 4C . MN 004 253


Model year 1992
WOMAN: 4C . NG 000 101 to WAU ... 4C . NG 000 153
WOMAN: 4C . NN 000 156 to WAU ... 4C . NN 002 922.

==References== 7000 vehicles are affected, in Germany 1500 are expected.

On this occasion, I gave the really friendly Audi man further potential flaws
This is the first time that we have had a debate on this subject.
1. What about the possible break of the steering gear attachment in the wheelhouse? Answer: This was not the case with the V8.
2. What about the airbag recall on the V8? Answer: In fact, there was and is!!! it still affects this action, however only V8 with an airbag.
3. What about the cruise callback on the V8? Answer: This concerns "only" 3.6. In this case, a plastic disc on the gas train connection to the diaphragm can was brittle - broke apart and could lead to full gas clamps. This action is still running - but can already be under the "old" documents at the workshops - so it is necessary to check it out yourself.
4. What about the increased oil consumption at 4.2? Nikasil bushings in combination with highly sulphurous fuel? Answer: This can lead to problems in the US and South America - not in Europe, here the strength-off quality is much better.
Finally I was told that if today's new car models were as reliable as the V8 was and is, then the Audi man would be unemployed - that is a huge praise for our V8!!!
That's how we ended our call.