Bose Acoustimass 10 III System "relocate ac" Questions

Loud humming noise from subwoofer When I turn the sub on it makes this loud humming like noise, all other speakers work fine, I opened the sub up and everything seems fine, nothing blown, any ideas? ...

Hello, I'm relocating to Germany and I'm wondering whether there is a simple possibility to run the Acoustimass 10 III with 220V. In the old times, I remember, there was always one and the same ...