Maven Wizard 

Tweak and tune your system for optimal performance. The Maven Wizard lets you set your headphones, 2, 4, or 5.1 channel speaker system for optimal volume and position.
3d sound 3d audio sound utilities speaker configuration speaker test system utilities sound wizard

3D Sound Tester 

The 3D Sound Tester is wav file player that lets you pan sound around you with your mouse. Move the sound location node, and you'll feel the distance and direction of the sound change even with simple stereo speakers.
3d sound audio test 3d audio speaker tester