All,
Thanks. I indeed went back to my 'supplier'; they first said 'we take it, repair it, it will take around 3 weeks'. He keyed in the infomration ... but the computer-system 'said': 'refund it, or give a new one'.
I looked for a new one in the store but apparently KMC-1 is not sold anymore, worse: no other Klipsch-systems I could choose from. So ...I got my money back. That was a short membership @Klipsch ;-)