Im very sorry to say it, but after upgrading from X-fi XtremeMusic to X-fi Prelude I still get crackling in Battlefield 2142. In normal order I've tried every tweak with no succes(IRQ sharing, changing pci slot, Latelcy Tool, drivers etc.).

I had the same problem with my x-fi XtremeMusic and upgraded after reading endless reviews and forumthreads, saying the prelude was "crackle free". For me, it was not.

Intel Core2Duo E6320
Gigabyte GA-P35-DS3
Nvidia 8800gts
2gb Corsair TWIN2X 6400 DDR2
Corsair vx450w psu
Windows xp pro