Viz Engine understands the following default speaker names:
FRONT_LEFT, FRONT_RIGHT and FRONT_CENTER
LOW_FREQUENCY
BACK_LEFT, BACK_RIGHT, and BACK_CENTER
FRONT_LEFT_OF_CENTER and FRONT_RIGHT_OF_CENTER
SIDE_LEFT and SIDE_RIGHT
TOP_CENTER, TOP_FRONT_LEFT, TOP_FRONT_CENTER, TOP_FRONT_RIGHT, TOP_BACK_LEFT, TOP_BACK_CENTER and TOP_BACK_RIGHT
SPEAKER_RESERVED
See Also
Matrox configuration interface