s Noise or hiss; signal not loud enough with Main Volume turned up : Turn up computer's sound (control panel) volume. Turn down Main Volume on control Pod to compensate. Appropriate software or hardware installed and operating? Is this sound part of the program material being played? Is software adjusted and set properly? Computer Video Monitor Interference: Is this Subwoofer too close to the computer monitor? Try 10 distance. Are one or both of the satellite speakers too close to the computer monitor? ...