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control than up and down — except
Yamaha. We decided that controlling
the volume could be made both easier
and more accurate, and the result is the
Accurate Touch Volume Control. It lets
you make delicate adjustments within a
narrow range, yet enables you to move
to very high or low levels more quickly.
3/10 (R/L/T/K)
are smaller (2/3 previous types), so
signal paths are shorter and there is
more space for the large power supply
components. Digital interference is
reduced and impedance is lower as well.
Accurate Touch Volume Control
No one expects more from a volume
RX-V640
NEW PRODUCT BULLETIN
2
1
3
32-Bit High-Density
Cinema DSP Circuitry
High Current
Amplification
High Performance Digital Circuitry
Digital
Input
6-Ch
Input
Advanced
Decoding
Circuitry
Including
32-Bit DSP
LSI
(YSS-938)
Minimal Analog
Processing
96 kHz/
24-Bit
DACs
for All 9*
Channels
Accurate
Touch
Volume
Control
(0—-99dB,
0.5 dB
Step) for
6 Channels*
Input
6-Ch
6-Ch High
Output Power
• Main L
• Main R
• Center
• Rear L
• Rear R
• Rear Center
From digital input, through
digital processing, to
amplification, maximum
signal quality is maintained
every step of the way.
* In addition to the six channels (Main L/R, Center, Rear L/R, Rear Center) there is a subwoofer output (hence 6.1-channel format compatibility) and two front
effect channels (a total of 9 DACs).The front effect channel signals, unique to Yamaha CINEMA DSP, are mixed with the main channel signals to achieve more
precise separation of dialogue, music and effects on the front sound stage and a superior sense of presence as compared to other systems.
Its extreme accuracy is due to a high-
signal-resolution analog design in
conjunction with an ultra-precise digital
control circuit (Yamaha original YAC-520
LSI). The wide control range extends
from 0dB to 99dB, with narrow 0.5dB
steps throughout the entire range for
delicate control, even at low volumes.
ⅷDolby Pro-Logic
Dolby Lab’s basic 4-channel format, widely
used in ordinary theaters and for home
videos.
ⅷ Dolby Pro Logic II
Improved version of Dolby Pro-Logic for
music and movies. With a more intelligent
matrix decoder, it is suitable for both stereo
and surround-encoded sources. It offers
“bass management” as well as the option of
incorporating “width,” “dimension” and
“panorama” controls.
ⅷ Dolby Digital
The most popular 5.1-channel home theater
sound system. An improvement over Dolby
Pro-Logic in that it offers: 1) Full frequency
response in all channels (3Hz — 20kHz), 2)
discrete surround channels, and 3) a
separate track for bass only, called the Low
Frequency Effects channel.
ⅷDolby Digital EX
Dolby's latest surround format, this is Dolby
Digital with an added center rear channel.
The rear center channel is actually matrixed
into the two rear channels, and is extracted
upon playback. (Formerly called Dolby
Digital Surround EX, or Dolby Digital Matrix
6.1.)
ⅷDTS Digital Surround
The basic DTS 5.1 channel sound format.
Uses a higher data rate than Dolby Digital.
ⅷDTS-ES Matrix 6.1
In this format, the back surround channel is
matrix encoded into the left and right
surround channels. For playback, the three
channels are separately decoded.
ⅷ DTS-ES Discrete 6.1
DTS-ES uses its large bandwidth to provide
a fully discrete rear center channel, as
opposed to a matrixed one.
ⅷDTS Neo:6
Provides 5.1 or 6.1 channels of matrix
decoding from stereo matrix material. Also
decodes Extended Surround matrix
soundtracks and has a Music mode to
expand stereo non-matrix recordings to 5.1
or 6.1 channels.
Brief Guide to Movie Sound Formats