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DNC – Dynamic Noise Covering
DNC is used when the vehicle is in motion
to boost the car audio system’s volume to a
level which is considered pleasant in the
stationary vehicle.
The volume is boosted at different levels for
the different frequency ranges, depending
on the amount of noise which develops in
the vehicle.
This keeps the volume and the sound of the
audio equipment at acceptable levels while
the background noise changes. Short-term
noise, such as the noise made when you
drive over a set of railway tracks, will not
affect the volume.
Adjusting DNC
If DNC is to operate correctly for your vehi-
cle, it is necessary to take a reading with
the microphone. Take the DNC reading af-
ter you take the hi-fi self-adjustment read-
ings. Use the enclosed tape to secure the
microphone somewhere near the dash-
board, but not in the foot area, near any-
thing that reverberates or near the heating/
cooling fans.
The microphone head must be facing to-
wards the passengers. The reading should
be taken in a quiet area with the engine
switched off.
To start taking the reading:
• Press DSA.
• Press DNC for approx. 1 sec. until
“DNC Adj” appears in the top line of
the display.
The DNC reading will now begin and be
completed fully automatically.
As soon as “DNC 3” appears in the top line
of the display, the reading has been com-
pleted. The value will be set to average DNC
sensitivity automatically.
Adjusting DNC sensitivity
The volume boost can be set to five differ-
ent levels:
Select DNC 1 if you have a loud engine and
usually listen to music with a lot of bass,
select DNC 5 if your vehicle runs very qui-
etly and you usually select classical music.
After you have taken a reading, the value
will automatically be set to DNC 3.
To alter the sensitivity
• press DNC briefly, the value selected
will appear in the top line of the dis-
play.
Press
/ to alter the value as desired.
Press ENT to store this new setting and
press EXIT to quit the DSA menu.
Switching DNC on/off
• To switch DNC off, press <<.
”DNC off” will appear in the top line of the
display.
• To switch DNC on, press >>.
Safety information
If the microphone is placed in the wrong
position, the DNC reading will be incorrect.
As a result, the volume might be boosted
too much while you are driving (could star-
tle the driver).
Please make sure to position the micro-
phone correctly.
AtlantaRCM169 gb 95%® 10.06.2002, 12:30 Uhr88