Grid Autosport,
Satellites cutting out sub still going, reduce volume using Right Front Satellite (Master) vol = sound back
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So, install Asus Xonar DGX PCI card, install latest drivers 1.75a from http://maxedtech.com/asus-xonar-unified-drivers/
In Asus utility select:
- Input 6 channels (might need to be 8 later)
- Analog 5.1
In Windows Playback devices, select 7.1 and disable side speakers
Still same issue so not: sound card, nor drivers, is a hardware issue with the Logitech speakers