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3-44
Step D: Repositioning the Microphones for Automatic Calibration (continued from page 3-43)
RECOMMENDED microphone positioning for automatic calibration
During automatic calibration, do not:
✗ arrange the microphones along the perimeter of
the listening positions or space
✗ position the microphones in spots where the
listeners’ heads will not be during listening
✗ obstruct the line-of-sight path between the
microphones and the speakers
✗ position the microphones on the floor, on seat
cushions, or in locations obstructed by furniture
and other fixtures, where echoes might obscure
calibration noise signals
✗ position the microphones within 2 feet (0.61m) of
speakers and walls or more than 30 feet (9.14m)
from any one speaker
The illustration at the right provides an example of improper
microphone placement during the microphone check. The
microphones are positioned on the floor along the perimeter of
the listening space, making it difficult for the MC-12 to calibrate
optimal speaker distances and output levels for the actual
listening positions.