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4. OPERATION continued …
4.5 VOLUME CONTROL
Changing Volume via Front Panel:
MAIN – Adjust using the Master Control Knob. If levels have been
calibrated according to section 3, set Volume to 0 dB for the playback
level which the film was originally presented in theaters.
ZONE2 or ZONE3 – Press ZONE2 or ZONE3, then adjust.
HEADPHONE – Check that the display reads MAIN, press FRONTS
twice, then adjust. MAIN can be set to mute whenever headphones
are plugged in (see section 3.9).
Changing Volume via Remote Control:
Make sure the appropriate control mode is set, then use the VOL
+
and VOL keys.
Mute:
When MUTE is pressed, the audio of the selected Path is silenced (or reduced in level – see section 3.9).
Press MUTE again, or rotate the Master Control Knob, and sound will return.
Always make sure you are in the Path that you want to adjust before changing Volume or muting.
Dialog Normalization:
Dolby Digital program material contains non-audio data which the AVM 50 uses to adjust playback level,
when necessary, so that volume variations between movies and programs are eliminated. Without Dialog
Normalization, movies not encoded at standardized levels for the dialog could lose dynamic range – higher
levels can result in distorted peaks, lower levels can result in quiet sounds disappearing into the noise floor.
Dialog Normalization also ensures that Dynamics control (section 4.8.10) works as intended.
If the display reads “Dial Norm Offset -4.0 dB” at the start of a movie, it is indicating that the encoded level
is higher than standard by 4.0 dB – the playback level of all channels is then automatically reduced by 4 dB.
4.6 SURROUND MODE LEVELS
The AVM 50 memorizes the level of one group of channels relative to another separately for each surround
mode (section 4.8), and for the 6-Ch input. To make a change for the surround mode that is currently playing,
adjust using the Master Control knob or on the remote as follows:
• Fronts: Press FRONTS, then adjust (this changes Left, Center, and Right
levels together).
• Center: Press CENTER, then adjust.
• Surrounds: Press SURR • REARS, then adjust.
• Rears: Press SURR • REARS twice, then adjust.
• Subwoofer Only: Press SUB • LFE, then adjust. Pressing SUB • LFE twice allows you to reduce the
level of the ‘.1’ LFE channel while leaving the bass derived from the other channels unchanged.
Certain movies exhibit prodigious levels of bass, and may need LFE adjustment.
To reset the above adjustments to 0 dB all at once, see section 3.12.
When listening in Stereo with Front speakers set to ‘Large’, the Subwoofer must be set to ‘Super’ if you
want it to play (see section 3.2).
MASTER
CONTROL KNOB
FRT CTR
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TUNE
SEEK
SOURCE SEEK
SELECT
SUB
LFE
SUR
RR
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B
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