Integra DTR-9.1 - Manual (Page 90)

Upgraded-
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Listening angle
The listening angle is the angle subtended by the front left
and right speakers as seen from the listener. The setting of
20 and 40 degrees are only for nominal purposes, so
select the setting that is closest to your actual listening
angle.
Center
For systems that have a center speaker, the center
channel signal can be output from the center speaker.
For instance, in systems where the front left and right
speakers are small, use of the center speaker may
provide a better sound space. (If your system uses a
center speaker, be sure to perform the level calibration
with the left and right speakers in the Speaker Setup
menu beforehand.)
On: The center channel signal is output to the center
speaker.
Off: The center channel signal is output from the front
left and right speakers (Phantom Center).
Front Expander
The front expander function spreads out the sound from
the front speakers for the feeling of a wide sound space.
On: Select to turn on the front expander function to
simulate a wider sound space.
Off: Select to turn off the front expander function for a
normal sound space.
Virtual Surr Lvl (Level)
This parameter adjusts the virtual surround level. This can
be set from –3 to +3 decibels.
Dialog Enhance
This parameter allows you to adjust the dialog sound level
from the center speaker if it is difficult to hear.
On: Enhances the vocal ranges for the center channel
signal.
Off: Outputs the center channel signal at the regular
level and frequency characteristics.
Front Effect
Some live recordings contain acoustic reverberation.
When you play these sources, more reverberation will be
applied by the DSP, creating too much reverb effects
and the sound loses frame or presence. In this case, set
this setting to “Off.” No reverberation from the DSP will be
applied to the sound output from the three front
channels, so the sound source is be played as it is without
any further reverberation.
Reflect Lvl (Level)
This parameter allows you to adjust the strength of direct
sound reflections to match the playback source material,
the acoustics of your room, and such other factors. This
can be set between –5 and +5 decibels in 1-decibel
increments.
Listening Mode Setup
Front left speaker Front right speaker
Listening angle
20˚ - 40˚
Reverb Lvl (Level)
This parameter allows you to adjust the depth of acoustic
reverberation to match the playback source material,
the acoustics of your room, and such other factors. This
can be set between –5 and +5 decibels in 1-decibel
increments.
Room Size
This parameter allows you set virtual hall size to simulate
for each surround mode. You can choose from “Large,”
“Mid-Large,” “Middle,” “Mid-Small,” or “Small.”