Now I have but for something a long search on the Creative website found a beta driver for Vista, after I downloaded and installed it now everything works as it should! No noise, no hum, the subwoofer works perfectly.
Unfortunately, we must in the reviews here no links reinschreiben therefore you have to the driver on the official website Search Creative itself.
Here are a few details to the driver:
Beta drivers
Creative Sound Blaster Beta Driver 1.01.0092
Size: 28.05 MB Download
Release Date: April 24, 09
This download is a beta driver providing Microsoft Windows 7 Beta, Windows Vista and Windows XP support for Creative Sound Blaster audio devices. For more details, read the rest of this web release note.
Filename: USB_W7DRVBETA_US_1_01_0092.exe
Under Vista with an attached subwoofer this a few weeks old beta driver is thus still a need.