Lexicon MC-12 User Manual download pdf (Page 81)

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.

SETUP

MC-12

3-39

CHECK MICROPHONES

MIC 1 OK

MIC 2 OK

MIC 3 ERROR

MIC 4 0K

PRESS V TO VIEW

DETAILS

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.

• 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

MIC 1 OK

(MICROPHONE)

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Lexicon MC-12 User Manual Page 81

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