After just 1-2 days use of the subwoofer is already broken. The LED flashes continuously and it is also output anything. Attached is the set of an Onkyo NR-636th Let's see how the replacement unit will behave.
Edit: Replacement unit was incidentally also defective again after 24 hours. I do not know whether the NR-636 may not work or I just had bad luck, but on a third attempt, I then have done without.