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Menu System Mark Levinson
The solution makes use of some specific information provided by
Dolby Digital sound tracks to provide some degree of compression
to reduce the dynamic range to something more appropriate to the
environment. Since this feature depends on information only avail-
able within Dolby Digital sound tracks, it is only available when the
Nº40 is decoding Dolby Digital.
Your sound profile options for the Dolby Digital Compression
feature are:
• None (no compression)
• Mild (slight compression of the recording’s dynamic range)
• Medium (moderate compression of the recording’s dynamic
range)
• Full (maximum compression of the recording’s dynamic range).
Front L/R High Pass
Filter (HPF)
The front L/R high pass filter specifies the frequency above which
information is passed to the front left and right loudspeakers.
The normal, or default, setting for these speakers is established in
the speaker menu, and should represent the way you want to use
the system most of the time (if not always). However, there may be
special applications where a different crossover setting would be
preferable. For example, if you have full range speakers that you use
for the front left and front right, it may make sense to cross them
over to a subwoofer for most multichannel material, if the
subwoofer has superior dynamic range capabilities. But you may
prefer to run the front left and right speakers full range for simple
two-channel recordings, played in 2-channel stereo mode. This
would effectively turn off the subwoofer and change the Nº40-
based multichannel system into a high quality stereo system.
The options for changing the stereo high pass filter for a particular
sound profile include:
•Normal
The default setting for new profiles, and the same as you have
described in the speaker menu.
•Full range
This effectively defeats the crossover as far as the front left and
front right speakers are concerned.
• Full range with subwoofer
Provides for “redundant” bass below 50 Hz, as the front left and
front right speakers will be full range while the subwoofer will
also operate below 50 Hz.