Kenwood KR-V990D - Manual (Page 30)

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This receiver incorporates 4 different sound modes to let you enjoy surround sound with a wide variety of program sources.
The Dolby AC-3 and Dolby Pro Logic surround sound let you enjoy theater-like surround effects when you play Dolby AC-3 and
Dolby Pro Logic program sources (like Laserdiscs). Dolby 3 Stereo creates a panoramic frontal sound field while keeping dialog
^^8 on screen. The Digital Signal Processing (DSP) modes, DSP Logic, let you create the atmosphere of a movie theater from almost
any type of program source.
To obtain the best possible surround sound, be sure to complete "Surround set up" before using the surround modes.-»Q^
Sound modes
Dolby AC-3
The Dolby AC-3 surround format lets you enjoy up to 5.1
channels of digital surround sound from Dolby AC-3 pro-
gram sources (such as Laserdisc software marked
gjlDo^iu^^ }. Compared with previous Dolby surround,
Dolby AC-3 provides even better sound quality, greater
spatial accuracy, and improved dynamic range.
Some AC-3 programs carry information that lets you com­
press the dynamic range of the sound track, without de­
grading the sound quality, for softer sound effects when
you listen late at night ("Midnight mode"-[^).
Note
Although a full set of speakers (front left, right, and center, rear left and
right, and a sub-woofer) is required for true 5.1 channel Dolby AC-3
surround sound, this receiver lets you enjoy Dolby AC-3 (and Dolby Pro
Logic) program sources, even if you connect only the front and rear, or
center speakers. ("Surround set up"
* LFE = Low Frequency Extension. This channel delivers separate ndn-
directional bass signals to the sub-woofer for more dynamic deep
bass sound effects.
Although only AC-3 soundtracks incorporate a separate low fjjj
quency channel, connecting a sub-woofer will also improve d(
bass performance in the other surround modes.
Dolby Pro Logic
Dolby Pro Logic is a specially encoded 2 channel surround
format designed to provide theater-like surround sound
from Dolby Pro Logic program sources (such as video and
Laserdisc software marked[lJl«*gyw»wwwD|). This receiver
is equipped with a Dolby Pro Logic surround decoder to iet
you enjoy the wide variety of currently available Dolby Pro
Logic home video software.
* Optional in this mode.
Dolby 3 Stereo
Dolby 3 Stereo creates a panoramic frontal sound field
while maintaining the dialog in an on-screen position. This
mode is designed for use with Dolby program sources, but
can also improve sound field unity for non-Dolby program
sources. Dialog positioning and sound image definition,
however, may not be as accurate when used with non-
Dolby program sources.
* Optional in this mode.