Cleaning And Maintenance - Grace m906 Owner's Manual

aDjUStinG DoWnmiX RatioS
The (optional) m906 DOWNMIX module allows the user to set the mix ratios for the CENTER and
SURROUND channels. This is adjusted as follows:
1. Enter CAL mode by pressing the CAL switch. The switch LED will begin to flash, indicating that you're now in
calibration mode.
2. Press the MUTE/SOLO switch. The switch LED will begin to flash.
3. DOWNMIX will be engaged and the LCD will display "DOWNMIX RATIO – CENTER LEVEL".
4. "CAL" will be displayed in the headphone level LED display while the current ratio is shown in the main level LED
display.
5. Rotate the 'main level/edit' rotary encoder in a counter-clockwise direction to increase the amount of attenuation.
Rotate the encoder in a clockwise motion to decrease the value. Available ratios are --- (mute), -6.0dB, -4.5dB,
-3.0dB, -1.5dB, 0.0dB, 1.5dB and 3.0dB.
6. Press the MUTE/SOLO button again to access the DOWNMIX ratio for the LS and RS surround channels. The LCD will
display "DOWNMIX RATIO – LS AND RS LEVEL".
7. Once you're satisfied with the new DOWNMIX ratios, you can select a new function to edit or exit. Exit CAL mode and
return to the normal operating state by pressing the flashing CAL switch.
ReSettinG tHe SYStem DefaULtS
There may be a time when you need to reset m906 system parameters to their default values. Here's
how:
1. From normal operating mode, press and hold the CAL switch for approximately 5 seconds.
2. The system LCD will now ask you whether or not you'd like to restore the default calibration mode values (screenshot
19).


3. Press the SUB switch located in the channel solo/mute switch row if you don't want to restore the default settings.
Doing this will exit this mode and return you to the normal operating state of the m906.
4. Press the CENTER switch located in the channel solo/mute switch row if you want to restore the unit's default
settings.
Your m906 system chassis is constructed out of high quality stainless steel. Under normal circumstances,
virtually no maintenance is required to keep the unit looking shiny and new. However, if you unit
becomes smudged or dirty, here are some cleaning tips: We recommend using either Pledge furniture
polish or stainless steel cleaner (available at the hardware store). Apply cleaner to a clean, dry, lint free
cloth and gently wipe all stainless surfaces, taking care not to allow the cleaning product to build up
around the panel switches or knobs.

CleanInG and maInTenanCe

screenshot 19
dim level adjust
grace design m906
owner's manual
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