Setup – Lexicon MC-12 Digital Controller Lexicon MC-12 User Manual
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)
OK