Dell MMS 5650 Surround Sound 5.1 Speakers

I have the Dell home theater speakers MMS 5650 rigged up to my XPS 8700 - they are working fine. However i have upgraded my PC from 8.1 to windows 10. Whereas under 8.1 i was able to calibrate the speakers individually i can not see a way of doing this in Windows 10. Has anyone got any clues?