from p38 of 6004 manual:
Notes
Audyssey Front, Audyssey Flat and
Audyssey can be selected after executing the
Auto Setup feature.
If a speaker that was determined No in Auto
Setup is manually turned on, the Audyssey,
Audyssey Front and Audyssey Flat modes
cannot be selected.
If, after auto setup was performed, changes were made
to the settings, such as the speaker confi guration and
distance, channel levels and crossover frequencies,
without increasing the number of speakers whose
characteristics were measured, * will be displayed
for the name of the mode.
Example: Audyssey Flat*
The equalizer turns off when the Pure Direct
mode, Source Direct mode, Dolby Headphone or
Virtual mode is set.
Acoustic EQ Modes are not used during playback
of Dolby TrueHD, Dolby Digital Plus, or DTSHD
signals.
Even in this case, settings made using Speaker
Auto Setup (speaker yes/no, distance, size,
channel level, crossover) are enabled.
Tone Control is disabled when an EQ Mode is in
use.
Notes
Audyssey Front, Audyssey Flat and
Audyssey can be selected after executing the
Auto Setup feature.
If a speaker that was determined No in Auto
Setup is manually turned on, the Audyssey,
Audyssey Front and Audyssey Flat modes
cannot be selected.
If, after auto setup was performed, changes were made
to the settings, such as the speaker confi guration and
distance, channel levels and crossover frequencies,
without increasing the number of speakers whose
characteristics were measured, * will be displayed
for the name of the mode.
Example: Audyssey Flat*
The equalizer turns off when the Pure Direct
mode, Source Direct mode, Dolby Headphone or
Virtual mode is set.
Acoustic EQ Modes are not used during playback
of Dolby TrueHD, Dolby Digital Plus, or DTSHD
signals.
Even in this case, settings made using Speaker
Auto Setup (speaker yes/no, distance, size,
channel level, crossover) are enabled.
Tone Control is disabled when an EQ Mode is in
use.

















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