Dynaudio Sub 20a - schematics/ service manual ?

Hi

Own a blown Dynaudio SUB 20a subwoofer,
desperately looking for a service manual/schematics of the amp section.

Thanks

Gary G.

PS. Dynaudio won't give it away, ridiculous.
 

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Ciao,
I've the same problem: an electrical surge at home destroyed something within my SUB-20A... that I bought some... 17 years ago (in 2003, but was perfectly working before this damned spark).
Now it's only hissing and bumbing :-(

I've opened it, but no visible problem: a diagram would help to check it with an oscilloscope...

Any idea? Thanks