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851D

azur

11

ENGLISH

Pre-amp mode

The 851D can optionally be used as a digital pre-amp and connected 

directly to a suitable power-amp.
To ensure that the Pre-Amp mode is selected, press the Menu button 

then select the Pre-Amp item.

SETTINGS

USB 2

Pre-Amp

Front IR

Bright

Source

Trigger

APD OFF

Balance

Once Pre-Amp is enabled, the handset Volume Up and Down buttons 

and the Volume knob on the front panel will affect the signal output level 

from the 851D. A Balance (Channel Balance) option is also available in 

the menu structure.
The level at both the balanced XLR and single-ended Phono/RCA 

outputs is affected and either connection type can be used, see previous 

‘Balanced’ and ‘Unbalanced’ diagrams.
To disable the Pre-Amp mode, select the button again and a display will 

ask you to confirm your selection.

PreAmp ?

Disable

Yes

No

Press the Yes button to confirm.

Be  careful  not  to  disable  the  Pre-Amp  when  connected  to  a  power 

amplifier in this way, as this returns the output level to an un-adjustable 

maximum level for use only into an integrated amplifier or pre-amplifier 

with its own volume control.

Balance

When the 851D is in Pre-Amp mode, the Balance menu item will be 

available. Press the Balance menu item button to enter the balance 

mode. 

SETTINGS

USB 2

Pre-Amp

Front IR

Bright

Source

Trigger

APD 30m

Balance

BALANCE will appear on the display and can be adjusted using the 

volume control.

BALANCE

This allows adjustment of the relative level between left and right 

channels for circumstances 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 be desirable to disable the front panel IR by setting Front 

IR to off, go to Settings menu and press the Front IR button to turn off 

(the solid circle should not show). 

SETTINGS

USB 2

Pre-Amp

Front IR

Bright

Source

Trigger

APD OFF

LCD brightness

In the Settings menu, press the Bright button to scroll through bright/

dim/off settings for the front panel display.

SETTINGS

USB 2

Pre-Amp

Front IR

Bright

Source

Trigger

APD OFF

Trigger out

In  the  System  settings  menu,  press  the  Trigger  input  select  button  to 

enter the submenu. 

SETTINGS

USB 2

Pre-Amp

Front IR

Bright

Source

Trigger

APD OFF

The functions are: 

AlwaysOn

 – Trigger will always be enabled when unit is not in standby.

BySource

 – Trigger will be enabled when a source is selected. Sources 

can individually be selected: Input 1–4, BNC, AES/EBU, Bluetooth and 

USB. To select this function, press the Sources button then select the 

trigger source/s.

TRIGGER

BySource

Phones

Sources

TRIG SRC

Input 1

Input 2

Input 3

Input 4

BNC

AES/EBU

BTooth

USB

Phones

 – When this mode is enabled, trigger output will be disabled 

when headphones are plugged in.

Auto Power Down (APD)

This  product  has  APD  (Auto  Power  Down)  enabled  as  default.  After 

inactivity of 30 minutes, the product will automatically switch to Standby. 

Changing the default settings can be done by going to the Settings menu 

and by pressing the APD item button to cycle through the different 

options. The options are: 2hrs, 1hr, 30 minutes and Off. 

SETTINGS

USB 2

Pre-Amp

Front IR

Bright

Source

Trigger

APD 30m

Summary of Contents for 851D

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

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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