solved thx for your help guys

[saltedeggman]

solved thx for your help guys

 

[CoDerEd]

Is the in put from the sound card is 4 chanel or digital,
if it's a four chanel than you can try to swap it front and rear.
sometime we never try the rear chanel on the sound card
before we have a 4ch speaker, probably it's just need
to be set up first on the software or it's not working.

peace

 

[saltedeggman]

yes the sound card is 4 channel...

its sblive audigy