This workaround worked for me on Vengeance 2100. Take a look, hope it works for you. It's not perfect, but no more ear breaking high volume. And surround is working too! At least on Skyrim :)
http://drivers.softpedia.com/get/SOUND-CARD/Dolby/Corsair-Vengeance-2100-Dolby-Audio-Driver-2025-Beta.shtml