SETUP Lexicon
3-40
Step D: Repositioning the Microphones for Automatic Calibration
Proper microphone placement is essential to achieving the desired automatic calibration results. Microphone placement determines whether
the MC-12 calibrates optimal speaker distances and output levels for a single listening position, several listening positions in a single row, or
several listening positions in the listening space. Refer to the diagrams on pages 3-41 to 3-45 for more information.
D-1. Refer to the microphone placement examples that begin on the next page to position the microphones for automatic calibration. Select
the microphone placement that best meets the needs of the listening space.
Step C: Checking the Microphones (continued from page 3-39)
TroubleshootingDescriptionMessage
The microphone detected the calibration
noise signal without error.
The MC-12 did not detect the microphone
during the silence check.
The MC-12 detected the microphone
during the silence check. However, the
microphone level determined during the
silence check was not confirmed during
the microphone check.
The microphone level is more than 20dB
below the highest microphone level.
The microphone level could not be
determined because of excessive room
noise in the listening space.
•N/A
• Examine microphone input connections to ensure that the microphones are properly connected to the
MC-12 and that microphone cable plugs are fully inserted for a solid connection.
• The microphone might be damaged. Contact an authorized Lexicon dealer for assistance.
• Eliminate extraneous noises in the listening space, including conversations, air conditioners, and sounds
that filter in through open doors and windows.
• The microphone might be damaged. Contact an authorized Lexicon dealer for assistance.
• Examine microphone input connections to ensure that the microphones are properly connected to the
MC-12 and that microphone cable plugs are fully inserted for a solid connection.
• The microphones might be positioned too far from the front speakers. Refer to the microphone
placement examples that begin on page 3-36 to confirm that the microphones are appropriately
positioned for the microphone check.
• The microphone might be damaged. Contact an authorized Lexicon dealer for assistance.
• Examine microphone input connections to ensure that the microphones are properly connected to the
MC-12 and that microphone cable plugs are fully inserted for a solid connection.
• The microphones might be positioned too far from the front speakers. Refer to the microphone
placement examples that begin on page 3-36 to confirm that the microphones are appropriately
positioned for the microphone check.
• The microphone might be damaged. Contact an authorized Lexicon dealer for assistance.
(MICROPHONE)
OK
(MICROPHONE)
NOT DETECTED
(MICROPHONE)
SIGNAL TOO LOW
(MICROPHONE)
OUT OF RANGE
(MICROPHONE)
TOO MUCH ROOM NOISE