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851D

azur

15

ENGLISH

Technical specifications

All measurements are for 24-bit signals via the digital inputs so as not 

to be source material limited unless stated.

D/A converters

 

 

 Dual Analog Devices 

   AD1955 

24-bit 

DACs

Digital filter

 

 

 Analog Devices Black Fin

 

 

 

 ADSP-BF532 32-bit DSP 

performing  2nd Generation ATF2  

up-sampling to 24-bit 384kHz

 

 

 

 Linear, Minimum, Steep or Phase 

modes.

Analog filter

 

 

 2 Pole Fully Differential 

Linear Phase Bessel filter

Digital Input 1 and 2

  

S/PDIF 75 ohms or TOSLink optical

Digital Input 3 and 4

  

TOSLink optical

Digital Input 5

 

 

BNC Co-axial 75 ohms

Digital Input 6

 

 

XLR balanced 110 ohms per phase

USB Audio Input

 

 

 USB Type B conforming to Audio profile 

1.0 or USB Audio profile 2.0 (user 

selectable)

Compatibility

  

 USB 1.0:

  

24-bit 44.1kHz, 48kHz, 96kHz 

   

 USB 2.0:

  

16/24-bit 44.1kHz, 48kHz, 88.2kHz, 

96kHz, 176.4kHz, 192kHz

   

 Toslink:

  

16/24-bit 32-192kHz

   

 BNC, S/PDIF and AES/EBU: 

 

16/24-bit 32-192kHz

Line level / balanced output

   Frequency response

 

20Hz to 20kHz (+/-0.1dB)

   THD @ 1Khz 0dBFs

  

< 0.0004%

   THD @ 1Khz -10dBFs

 

< 0.0004%

   THD @ 20Khz 0dBFs

 

< 0.0007%

   IMD (19/20kHz) 0dBFs

 

< 0.0002%

   Linearity @ -90dBFs

 

+/- 0.2dB

   Linearity @ -120dBF

 

+/- 0.4dB

   Stop-band rejection 

 

> 120dB 

   

(>24kHz)

   S/N ratio, A weighted

 

> 113dB

   Total correlated jitter

 

 < 60pS for all digital inputs and USB 

2.0

 

 

 

< 180pS for USB 1.0

   Crosstalk @1kHz

   

< -130dB

   Crosstalk @20kHz

   

< -114dB

   Output impedance

  

< 50 ohms 

   0dB Fs Output

 

 

 2.2Vrms (2.2Vrms each phase for the 

balanced output)

Headphones

   Connector

 

 

 1 x ¼"/6.35mm Headphone output 

 

  Compatibility

 

 

12 - 600 ohms

   

Frequency response

 

20Hz to 20kHz (+/-0.1dB)

   THD @ 1Khz 0dBFs 

 

< 0.0007%

   THD @ 1Khz -10dBFs

 

< 0.0019%

   

THD @ 20Khz 0dBFs

 

< 0.0009%

   (Measurements taken into a 32 ohm load)

Dimensions - H x W x D

 

 115 x 430 x 360 mm  

(4.5 x 16.9 x 14.7”)

Max power consumption

 40W

Idle consumption

 

 

8W approx

Standby power consumption

 <0.5W

Weight

   

 

7.5kg (16.5lbs)

Содержание 851D

Страница 1: ...Your music our passion 851D azur Upsampling DAC Digital Pre Amp User s manual 2 ENGLISH...

Страница 2: ...d to a mains socket outlet with a protective earthing connection The unit must be installed in a manner that makes disconnection of the mains plug from the mains socket outlet or appliance connector f...

Страница 3: ...hot when in use Do not stack multiple units on top of each other Do not place in an enclosed area such as a bookcase or in a cabinet without sufficient ventilation Ensure that small objects do not fa...

Страница 4: ...EXCLUSIVE REMEDY OF THE CONSUMER CAMBRIDGE AUDIO SHALL NOT BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR BREACH OF ANY EXPRESS OR IMPLIED WARRANTY IN THIS PRODUCT EXCEPT TO THE EXTENT PRO...

Страница 5: ...on the digital outputs Coaxial To obtain best results use a high quality 75 ohm digital RCA interconnect cable not one designed for normal audio use Toslink Optical Use a high quality TOSLINK fibre op...

Страница 6: ...tively pressing the Filter button on the remote will cycle through different digital filter phase modes Linear Minimum Steep Linear inverted Minimum inverted and Steep inverted Alternative digital fil...

Страница 7: ...ource inputs Bluetooth BT100 Press to select bluetooth source input using the BT100 dongle To pair devices press and hold for a few seconds to initiate the pairing function Note Disconnect one device...

Страница 8: ...cted to the 851A via the Balanced ouput 851A 851D StreamMagic 6 PC USB connection The diagram below shows the USB audio input connection from a personal computer using a type A B USB lead to your 851D...

Страница 9: ...f the manual Note When connecting to an 851W Unbalanced connection can also be used if preferred 851D 851W Control Bus connection Control Bus is the recommended method when using the 851D and other Ca...

Страница 10: ...and play In this configuration the 851D is able to work at up to 24 bit 96kHz by declaring to your computer that it can handle any sample rate from 32kHz to 96kHz However in some Windows Mac operating...

Страница 11: ...where one speaker is further away than the other or the source material itself has a channel imbalance Front IR Used in conjunction with Custom Installation C I systems or IR repeater systems It may...

Страница 12: ...internal feed forward in the DSP its impulse response will exhibit some pre ringing In other words when excited with a theoretical impulse the output has both a small amount of pre and post spike amp...

Страница 13: ...ion of close in aliasing images Here we have traded a little attenuation of the very highest frequency response 2dB at 20kHz for 44 1kHz material and a little more pre and post ringing for a very stee...

Страница 14: ...pt held down for a further 12 seconds an amplifier player Off command is generated 2 Press and hold the Mute button The remote first generates it s mute toggle command Keep the button held down after...

Страница 15: ...bit 44 1kHz 48kHz 88 2kHz 96kHz 176 4kHz 192kHz Toslink 16 24 bit 32 192kHz BNC S PDIF and AES EBU 16 24 bit 32 192kHz Line level balanced output Frequency response 20Hz to 20kHz 0 1dB THD 1Khz 0dBFs...

Страница 16: ...Audio is a brand of Audio Partnership Plc Registered Office Gallery Court Hankey Place London SE1 4BB United Kingdom Registered in England No 2953313 www cambridge audio com 2013 Cambridge Audio Ltd...

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