Hi

"René" wrote

[HF oscillating amps]
Solution was (second strange coincidence coming up):
Adding a series network of 10 Ohm and 100 nF in series. (see other
related subject in this group)

You're right, in series to speakers you'll never blow them
- but you won't hear much;-)

So putting this 'network' _parallel_ to speakers might do it,
NOT in series!

Rudi Fischer
--
...and may good music always be with you