Lexicon Controller Version 4 EQ MC-12 - Manual (Page 22)

Configuring the MC-12 for V4 EQ
2-8
Lexicon MC-12 Controller
PERFORMING THE MICROPHONE CHECK
1. Open the SPEAKER SETUP menu as shown above.
2. Press the and arrow buttons to highlight the CHECK
MICROPHONES procedure. Then, press the arrow button
to begin this procedure.
3. The CHECK MICROPHONES screen (shown above) opens on
the on-screen display, emphasizing the importance of proper
microphone placement to achieve the desired automatic
calibration results.
Refer to Positioning the Microphones for the Microphone Check
(page 2-6) to ensure that the microphones are properly posi-
tioned for the microphone check. Then, press the
arrow
button to continue.
The CHECKING FOR SILENCE message (shown above) appears
on the on-screen display while the MC-12 determines the
relative noise level of the listening room and the internal noise
level of the microphones. After eliminating microphones that
are not detected or not functioning, the MC-12 calculates an
average microphone level.
MAIN MENU
MODE ADJUST
AUDIO CONTROLS
SETUP
CHECK MICROPHONES
CHECKING FOR SILENCE
PLEASE WAIT
CHECK MICROPHONES
CHECKING MICROPHONES
PLEASE WAIT
SPEAKER SETUP
SET CROSSOVERS
CHECK MICROPHONES
AUTOMATIC
MANUAL
SET CROSSOVERS
BEFORE CALIBRATING
SETUP
INPUTS
SPEAKERS
REAR PANEL CONFIG
DISPLAYS
VOLUME CONTROLS
TRIGGERS
LOCK OPTIONS
CHECK MICROPHONES
GROUP MICROPHONES
INTO A BUNDLE IN THE
MIDDLE OF THE ROOM
PRESS V TO
BEGIN MIC CHECK
SETUP
CHECK MICROPHONES SPEAKERS
The CHECKING MICROPHONES message (shown above)
appears on the on-screen display while the MC-12 confirms
the microphone level calculated during the silence check. To
do this, the MC-12 sends alternating calibration noise signals
to the front left and right loudspeakers, eliminating microphones
that detect the signal at an unusually low or high level. Then,
the MC-12 determines the appropriate output level for the
calibration noise signal used during automatic calibration.
Note:
The MC-12 outputs calibration noise signals between
55 and 95dB, starting at 55dB and increasing in 5dB
increments until the microphones detect the required
level. If calibration noise signals become too loud,
press the
arrow button to cancel automatic
calibration.