Cambridge Azur 840C Bruksanvisning

Cambridge CD-spelare/brännare Azur 840C

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azur 840C

Upsampling compact disc player

User’s manual

2 Azur upsampling compact disc player

Introduction .................................................................................................3

Safety precautions ......................................................................................4

Important safety instructions .....................................................................5

Rear panel connections..............................................................................6

Front panel controls....................................................................................8

Remote control..........................................................................................10

Remote control of matching products.....................................................11

Operating instructions..............................................................................12

External digital sources ............................................................................15

CD player setup.........................................................................................16

Custom installation use............................................................................18

Troubleshooting.........................................................................................18

Technical specifications ...........................................................................19

Limited warranty .......................................................................................20

CONTENTS

Azur upsampling compact disc player 3

Thank you for purchasing this Azur 840C Upsampling Compact Disc

Player. This unit is part of our new '8' series range, taking Cambridge

Audio to new levels of audio excellence. The 8 series range has been

developed as part of our commitment to the on-going development of

the Azur range. We hope that you will appreciate the results and enjoy

many years of listening pleasure from it.

The 840C incorporates a raft of new technologies and features. Key to

its abilities is the ATF

(Adaptive Time Filtering) upsampling process -

developed in conjunction with Anagram Technologies of Switzerland.

This system intelligently interpolates 16 bit/44.1kHz CD (or other) data

to 24bit/384kHz through the use of a 32 bit Analog Devices Black Fin

DSP (Digital Signal Processor) for the very best sound quality. The ATF

system applies sophisticated polynomial curve fitting interpolation and

incorporates a time domain model which allows data buffering and re-

clocking almost completely eradicating digital jitter.

Because the audio data rate is so high aliasing artefacts are moved way

above audible frequencies allowing us to use a low order 2 pole linear-

phase Bessel filter on the output for constant group delay and minimal

phase shift.

Two very high quality Analog Devices AD1955 24 bit DACs (Digital to

Analog Converters) are used in dual differential mode. As each channel

has its own DAC to process information, completely separate and

symmetrical analog filter circuitry can be implemented. These allow

both left and right channel circuitry to operate identically, ensuring the

840C delivers fantastic sound-staging and stereo imaging properties. All

filtering from DACs to output is also fully differential using unique

differential output amplifiers.

This fully balanced configuration largely rejects the already very low

noise and distortion products present in the DACs and filters and

provides an unprecedented level of performance.

A true balanced (XLR) output is fitted as well as a summed conventional

unbalanced phono/RCA output. Automatic DC servo circuits null all DC

offsets allowing no capacitors in the signal path at all.

Two digital inputs are fitted allowing other digital sources to be brought

into the 840C and upsampled, the 840C then working as a very high

quality DAC.

A digital output is also fitted which can even output upsampled data at

various rates and word widths, independent from the main audio output,

which is always set at 24/384 for best sound quality.

In addition to these audiophile features Control Bus Input/Output, IR

Emitter Input and RS232 control are provided to make it easy to

integrate this unit into Custom Installation systems if desired.

A completely new 8-series casework has been designed which combines

massive structural rigidity with careful damping and control of acoustic

resonance. An Azur Navigator remote control is also provided, giving full

remote control of your CD player and Azur amplifiers in an attractive and

easy to use handset.

Your CD player can only be as good as the system it is connected to.

Please do not compromise on your amplifier, speakers or cabling.

Naturally we particularly recommend amplification from the Cambridge

Audio Azur range, and in particular the 840A Integrated Amplifier which

has been designed to the same exacting standards as this CD player.

Your dealer can also supply excellent quality Cambridge Audio

interconnects to ensure your system realises its full potential.

Thanks for taking the time to read this manual; we do recommend you

keep it for future reference.

Matthew Bramble, Technical Director

INTRODUCTION

840C Upsampling compact disc player

Produktspecifikationer

Varumärke:	Cambridge
Kategori:	CD-spelare/brännare
Modell:	Azur 840C
Vikt:	8500 g
Bredd:	430 mm
Djup:	360 mm
Höjd:	115 mm
Strömförsörjning:	115/230 V, 50/60 Hz
Ljudutgång:	1
Total harmonisk distorsion (THD):	0.0008 %
CD-växlare:	Nej
Dynamiskt omfång:	130 dB
Produktens färg:	Svart
MP3-uppspelning:	Ja
Enhetstyp:	Personlig CD-spelare
Strömförbrukning (vanlig):	40 W
Produktstorlek (BxDxH):	430 x 360 x 115 mm
Frekvensområde:	20 - 20000 hz
Signal/brusförhållande (SNR):	113 dB
Uppspelning av CD-R:	Ja
Ljud D/A-omvandlare (DAC):	2x AD1955