Yamaha DSP-3000 Manual de usuario descargar pdf (Pagina 2)

For the HD Audio Era

Yamaha’s main goal for the DSP-Z11 was to

achieve the highest possible sound quality

through loseless reproduction via HDMI signal

transmission. We began with no preconceived

notions, designing everything purely for the

purpose of creating a new receiver standard for

the HD audio era. We focused especially on the

fact that not only analogue and digital signal

transmission by coaxial or optical routes, but also

transmission by the HDMI route will be a priority

in the future.

Achieving our goal for the DSP-Z11 involved

a huge number of design considerations, but five

of the most important ones are as follows. We

used the Pure Ground DAC concept to realise

the best possible sound reproduction from HDMI

transmitted signals. We employed two-stage jitter

reduction, consisting of a low-jitter PLL circuit

and VCXO processing that includes HDMI signal

input for stable clock operation. An 11-channel

current feedback circuit contributed to open and

appealing sound quality. We opened a new era

of sound field creation through the use of 7.2-

channel plus 4-channel presence speaker setting

and CINEMA DSP HD

. And we developed a

New Pure Direct that controls the power supply

and route according to the multi-channel and HD

audio reproduction.

The result is a truly impressive reference

receiver for realising all the possibilities of the HD

audio era.

Unprecedented Audio Performance

11.2-Channel High Density Surround Sound

(7-Channel 240W/ch + 4-Channel 90W/ch, Max)

The DSP-Z11 delivers 240W x 7 channels plus

90W to the four presence and rear presence

channels. It also allows the simultaneous use of

two subwoofers (hence 11.2 channels). In

addition to Yamaha’s latest CINEMA DSP HD

technology for high density, incredibly detailed

surround sound, it provides extensive zone

customisation functions, enabling the 11 amp

channels to be allocated to zones 2, 3 and 4 in

various configurations.

Digital ToP-ART and High Current

Amplification

Yamaha’s

Digital ToP-

ART design

concept

ensures that

the receiver is

fully capable

of handling

the

transmission

of high

volume digital

sound data at

speeds up to

192kHz. The

interior layout

thoroughly

isolates the

digital,

analogue and

video sections

and provides

the shortest possible signal

routes. To achieve the quality

demanded by the latest lossless

compression formats received

via HDMI bitstream transmission, circuit board

designs were radically revised and parts

selection was reevaluated. The DSP-Z11’s

superior parts include Burr-Brown DSD1796

DACs, an op amp, custom-made 27,000µF

block capacitors and Schottky barrier diodes. A

Variable Volume Control helps provide the best

possible S/N ratio. High Current Amplification

circuitry achieves high current power with low

impedance for superior amplifier performance.

Super Stable Chassis Design

The internal chassis design uses an ultra-rigid

Rahmen structure, which is a series of H-shaped

frames. This rectangular structure secures and

isolates the parts sections, while reducing

vibration to a negligible amount. The external

chassis walls are thick (1.6mm) and heavy.

High Sound Quality: Preamplifier Stage

New Pure Direct Concept

For the DSP-Z11, Yamaha has upgraded its

popular Pure Direct feature. It now provides

higher sound quality from lossless audio formats

digitally transmitted via HDMI, while still

ensuring optimum quality from CD and analogue

audio sources. It allows the enjoyment of two-

channel CD output, multi-channel Super Audio

CD and DVD-Audio output, and even Blu-ray,

HD-DVD and other HD sources.

Pure Ground DAC Concept

The DACs, vital determinants of digital audio

quality, are placed on the analogue circuit

board, preventing the large ground potential

differences that can

occur when the digital

and analogue sections

are far apart.

Furthermore, the DACs

are connected directly

to the power supply to

avoid degradation of

low level signals. This

helps to maximise both two-channel and multi-

channel audio performance.

High Quality Preamplifier Block Design

The printed circuit boards are located very close

to each other. This has

the advantages of

minimising signal

paths, shortening

signal loops and

improving noise

isolation from other

circuits.

Low-Jitter PLL and Digital Clock Circuits

The preamplifier stage incorporates both a low-

jitter PLL circuit and a VCXO digital clock circuit,

significantly reducing jitter from digital inputs so

sound processing can be accomplished without

being affected by jitter. This is particularly

effective in improving the sound quality of digital

signals that are input via HDMI.

High Sound Quality: Power Amplifier Stage

All Channel Current Feedback Circuit

The power amplifier uses current rather than

voltage for feedback in all channels. Because

there is virtually no phase shift, phase

compensation can be kept to a minimum. This

contributes to the DSP-Z11’s excellent transient

response,

allows

frequency

response to

remain

unchanged

even when the

gain changes,

and creates a

warmer,

texture-rich

sound.

Hybrid Low Noise

Power Supply

A highly efficient DC-

DC converter and

extra-large transformer

is used for the digital

circuit, which requires

high current input, and

a low noise power

supply circuit for the

analog audio circuit. An

independent current

power path is provided

for the speaker relays

and display.

Symmetrical Layout and

New Power Circuit Layout

The heavy power transformer is in the centre

with the heat sinks on either side to ensure

equal weight

distribution. The power

circuit layout separates

the video and digital

audio section from the

analogue audio section

to eliminate adverse

influences, and

distances between

circuits and power

supplies were shortened to avoid high current

loop problems.

Thick Aluminium Panels and Large, Heavy Feet

Thick aluminium panels

are used throughout to

prevent vibration and

maintain high

performance audio

reproduction. The

large, heavy feet also

serve to dampen

external vibrations.

NEW PRODUCT BULLETIN

1 Custom-made 27,000µF block capacitors

2 Extra-large 10kg power transformer

3 High efficiency heat sink

4 Large-size speaker terminals

5 Volume IC JRC NJM1194 (left), Burr

Brown audio DAC (DSD1796, centre) and

Op amp LM4562 (right)

6 Schottky barrier diodes

nput

Buffer

Amplifier

Current

Adder

Power Amplifier

Stage

Output

I/V Converter

Trans-Impedance

Amplifier

Current Feedback

Circuit

Input

DIR

(Low-Jitter PLL Circuit)

Output

VCXO Digital

Clock Circuit

PC LPF VCO PC LPF VCXO



DSP-Z11 11.2-Channel Digital Home Theatre Amplifier

H-shape frames to hold heavy

and big power transformer

High efficiency heat sinks

1.6mm super stable

chassis

Rahmen structure

(series of rectangle frames)

DSP-Z11 11.2-Channel Speaker Configuration

Low-Jitter PLL and VCXO Digital Clock Circuits

Preamplifier Circuit Board

Main L/R

Presence L/R

Subwoofer R

Subwoofer L

Surround L/R

Surround

Back L/R

Rear Presence L/R

Centre

Digital power circuit board (top)

and analog power board (bottom)

Ultra rigid feet and large twin-

fan (92mm) cooling system

Ch1

Stop:Tek 1.00GS/s

VCXO Circuit

1.00 V M 2.50ms 1.64VCh1

20.0X Horz2.0X VertCh1 Zoom:

657 Acqs

Ch1

Stop:Tek 1.00GS/s

Conventional Circuit

1.00 V M 2.50ms 1.64VCh1

20.0X Horz2.0X VertCh1 Zoom:

10994 Acqs

Conventional circuit

shows a wide range

of jitter while the

DSP-Z11 preampli-

fier exhibits virtual-

ly no jitter.

Current

Feedback

Frequency

Response/

Principle

Gain (dB)

Frequency (Hz)

2/4

1 2 3 4

Comentarios a estos manuales

Sin comentarios

Yamaha DSP-3000 Manual de usuario Pagina 2

Comentarios a estos manuales

Relacionado con productos y manuales para Procesadores Yamaha DSP-3000