Lexicon Lexicon MC-12 Check Microphones Results, Step C Checking the Microphones continues on

MC-12

SETUP

MC-12 sends alternating calibration noise signals to the front left and right speakers. These signals are output between 55 and 95dB, beginning with 55dB and increasing in 5dB increments until the microphones detect the required level. If the signal becomes too loud, press the arrow button to cancel the microphone check.

The MC-12 uses the calibration noise signal to eliminate microphones that register the signal at a level that is too low or too high. Then, the MC-12 determines the appropriate output level for the calibration noise signal used during automatic calibration.

CHECK MICROPHONES Results

Appears on the on-screen display when the MC-12 is finished checking the microphones. This screen indicates the individual check results for each microphone.

•An OK result indicates that the microphone passed the microphone check.

•An ERROR result indicates that the microphone did not pass the microphone check.

C-3.	Press the	and	arrow buttons to highlight the desired
	microphone parameter. The MC-12 refers to the microphones
	according to the input connector to which the microphone
	is connected.
C-4.	Press the	arrow button to view more detailed results for
	the selected microphone. A message similar to the one
	shown at the bottom of the previous column will open on
	the on-screen display. Refer to the table on the next page for
	information about all possible microphone check messages.

Note the following:

• The MC-12 retains the calculated microphone level until the

SPEAKER SETUP menu is closed. Once this menu is closed,

another microphone check is required before automatic

calibration can be performed.

• For best results, it is recommended to perform automatic

calibration with four microphones that have passed the

microphone check. However, the MC-12 will perform automatic

calibration as long as at least one microphone passes the

microphone check. In this circumstance, place the successfully

checked microphones in the primary listening position.

CHECK MICROPHONES

MIC 1	OK
MIC 2	OK
MIC 3	ERROR
MIC 4	0K

PRESS V TO VIEW

DETAILS

(MICROPHONE) OK

• If a successful microphone check has been performed, do not

disconnect the microphones from the microphone input

connectors. If the microphones are disconnected, it is

recommended to perform the microphone check again before

proceeding to automatic calibration.

. . . Step C: Checking the Microphones continues on page 3-40

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