Lexicon Lexicon MC-12 Step C Checking the Microphones from, Message Description Troubleshooting

SETUP

Lexicon

Step C: Checking the Microphones (continued from page 3-39)

Message	Description		Troubleshooting
	The microphone detected the calibration	•	N/A
(MICROPHONE)
OK	noise signal without error.
	The MC-12 did not detect the microphone	•	Examine microphone input connections to ensure that the microphones are properly connected to the
(MICROPHONE)
NOT DETECTED	during the silence check.		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.
	The MC-12 detected the microphone	•	Examine microphone input connections to ensure that the microphones are properly connected to the
(MICROPHONE)
SIGNAL TOO LOW	during the silence check. However, the		MC-12 and that microphone cable plugs are fully inserted for a solid connection.
	microphone level determined during the	• The microphones might be positioned too far from the front speakers. Refer to the microphone
	silence check was not confirmed during
			placement examples that begin on page 3-36 to confirm that the microphones are appropriately
	the microphone check.
			positioned for the microphone check.
		•	The microphone might be damaged. Contact an authorized Lexicon dealer for assistance.
	The microphone level is more than 20dB	•	Examine microphone input connections to ensure that the microphones are properly connected to the
(MICROPHONE)
OUT OF RANGE	below the highest microphone level.		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.
	The microphone level could not be	•	Eliminate extraneous noises in the listening space, including conversations, air conditioners, and sounds
(MICROPHONE)
TOO MUCH ROOM NOISE	determined because of excessive room		that filter in through open doors and windows.
	noise in the listening space.	•	The microphone might be damaged. Contact an authorized Lexicon dealer for assistance.

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.

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