I'm working on a Twin Arcade racing project running two PCs (Dell Optiplex 5040s). The PCs have standard two channel single green outlet. I purchase a Logitech X-540 surround sound system and plan to mount the center speaker above the PC monitor, the front right and left in the dash behind speaker grills, the sub under the seat and then splice the rear speaker wires into the existing speakers in the racing seat. I know there are many internal and external soundboards out there. Looking for advice on what would be a practical solution for this build. Thanks for your help!
pic is just general idea of what cabinet will look like