SETUP
MC-12
3-55

EXTERNAL NOISE TEST

Selecting the LEVELS CALIBRATION menu EXTERNAL NOISE TEST
option opens the SPEAKER LEVEL ADJUST menu shown on page
3-53, which can be used to manually calibrate output levels.
The external noise test requires an external calibration source such
as an audio calibration disc. When the external noise test is
conducted, the MC-12 activates a listening mode based on the
current Main Zone input source. Refer to the table below for more
information about external noise test listening mode activation.
When a listening mode is activated during the external noise test,
all custom listening mode menu parameter settings are ignored.
The listening mode is applied to the current Main Zone input
source in its factory-default condition. When the external noise test
is finished, the listening mode returns to its custom condition.
EXTERNAL NOISE TESTLEVELS CALIBRATIONMANUALSPEAKERSSETUP
Note:
When the external noise test begins, the MC-12
automatically sets volume level to +0dB. Avoid
adjusting the master volume level while the test is in
progress to achieve THX reference levels (75dB).
To manually calibrate output levels during the external noise
test:
1. Set the SPL meter to “C” weighting and “SLOW” response.
2. Press the and arrow buttons to highlight the desired
output level parameter. Then, press the arrow button to
select this output level parameter. The horizontal bar graph
shown on page 3-53 will open on the on-screen display.
3. When the horizontal bar graph opens, activate playback of the
external calibration source and press the and arrow
buttons to select the output level that achieves a 75dB SPL
meter reading from the primary listening position.
4. When the desired output level has been selected, press the
arrow button to close the horizontal bar graph.
5. Repeat steps 2, 3, and 4 until all desired output levels have been
set.
Input Source Listening Mode
PLII MOVIE
2-Channel
Dolby Digital
dts(-ES)
5.1-Channel Analog
DIGITAL*
5.1a STANDARD
*
* These listening mode names differ depending on the current input source,
speaker setup, and parameter settings. Refer to the Listening Mode
Descriptions section that begins on page 5-5 for more information.