DSP-AX640SE

NEW PRODUCT BULLETIN

From digital input, through

digital processing, to

amplification, maximum

signal quality is maintained

every step of the way.

 

 

2

 

 

 

 

 

 

 

1

 

 

 

 

3

 

 

32-Bit High-Density

 

High Performance Digital Circuitry

High Current

 

 

 

Amplification

 

 

Cinema DSP Circuitry

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Advanced

 

 

 

 

 

 

 

 

 

Accurate

6-Ch High

Digital

96 kHz/

 

 

Input

 

 

Touch

Output Power

Decoding

 

 

 

 

Input

24-Bit

 

 

6-Ch

 

 

Volume

 

Circuitry

 

 

 

 

• Main L

 

 

DACs

 

 

 

 

 

 

 

 

Control

 

 

 

 

Including

 

 

 

 

 

 

 

 

 

 

 

 

for All 9*

 

 

 

 

 

 

 

 

(0—-99dB,

 

 

• Main R

 

 

32-Bit DSP

 

 

 

 

 

 

 

 

 

 

 

 

Channels

 

 

 

 

 

 

 

 

0.5 dB

 

 

• Centre

 

 

LSI

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Step) for

• Rear L

 

 

(YSS-938)

 

 

 

 

 

 

 

 

 

6-Ch

 

 

 

 

 

 

 

 

 

6 Channels*

• Rear R

 

 

 

 

 

 

 

 

 

 

Input

 

 

 

 

 

 

 

 

 

 

 

 

 

• Rear Centre

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Minimal Analogue

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Processing

 

 

 

 

 

 

 

 

 

 

 

 

 

*In addition to the six channels (Main L/R, Centre, Rear L/R, Rear Centre) 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.

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

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.

Its extreme accuracy is due to a high- signal-resolution analogue 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.

Brief Guide to Movie Sound Formats

vDolby Pro-Logic

Dolby Lab’s basic 4-channel format, widely used in ordinary theaters and for home videos.

vDolby 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.

vDolby Digital

The most popular 5.1-channel home cinema 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.

vDolby Digital EX

Dolby's latest surround format, this is Dolby Digital with an added centre rear channel. The rear centre 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.)

vDTS Digital Surround

The basic DTS 5.1 channel sound format. Uses a higher data rate than Dolby Digital.

vDTS-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.

vDTS-ES Discrete 6.1

DTS-ES uses its large bandwidth to provide a fully discrete rear centre channel, as opposed to a matrixed one.

vDTS 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.

3/10 (G/B)