Please ensure there is ample ventilation. We recommend that you do however, Cambridge Audio's policy is one of continuous not place the unit in an enclosed space; if you wish to place the unit on improvement, therefore design and specifications are a shelf, use the top shelf to allow maximum ventilation.
EC) Directives when used and installed according to this instruction The unit should be operated only from the type of power source indicated manual. For continued compliance only Cambridge Audio accessories should be used with this product and servicing must be referred to on the marking label.
Should it be necessary to fit a 3-pin BS mains plug to the power cord, the it can be returned by your dealer to Cambridge Audio or an authorised wires should be fitted as shown in this diagram. The colours of the wires Cambridge Audio service agent.
USB Interface Switches the 851D mains voltage between 100V and 115V. A USB B type socket is fitted to the 851D to enable the playback of audio Note: Intended for use by a professional installer or Cambridge Audio from a personal computer running either Microsoft Windows or Apple retailer only.
Allows for the connection of headphones with a ¼" jack plug connector. component that you wish to listen to (highlighted by a solid circle on the Note: 600 Ohm headphones will work well on the 851D. However, with display). some less sensitive models maximum volume maybe limited. If louder...
Audio 851 series and Stream Magic products. Insert the supplied AAA batteries to activate. Note: These functions will depend on the The functions relevant to the 851D are as follows: audio software installed on the host personal computer or paired devices.
Note: Unbalanced connection can also be used, if preferred. requirements. Unbalanced audio connection The diagram below shows a Stream Magic 6 being connected to Digital Input 1 of the 851D, which is in turn connected to the 851A via the Unbalanced ouput. 851A 851A...
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Trigger connection section of the manual. Note: When connecting to an 851W, Unbalanced connection can also be Trigger Out can be useful if the 851D is desired to control other used, if preferred. equipment that features trigger connections (Custom install and/or Multi-Room Systems etc).
Operating instructions The 851D has a custom-made display on the front of the unit that shows However in some Windows/Mac operating system variants the operating the current status and allows you to access the system settings menu. system itself may restrict or fix the output sample rate or re-sample the Here you can adjust the listening settings to your personal preference.
Balance The functions are: When the 851D is in Pre-Amp mode, the Balance menu item will be AlwaysOn – Trigger will always be enabled when unit is not in standby. available. Press the Balance menu item button to enter the balance BySource –...
BT100. Note: For clarity, all diagrams show the theoretical response of the DSP 1. Connect the BT100 to the BT100 USB socket on the rear of the 851D. itself, excluding any analogue filtering at the DAC output or the anti- 2.
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We encourage you to experiment with the filters to determine which sound best to your ears and using your source equipment/programme material. The 851D remembers and recalls the selected filter type for each input individually, making it possible, for example, to select Steep for the USB input and Linear Phase for Digital Input 1, and so on.
Troubleshooting The 851D features a Control Bus input/output that allow un-modulated The 851D is a complex product but even so, should things seem not remote control commands (positive logic, TTL level) to be received quite right, the answer is very often a simple one.
851D Technical specifications All measurements are for 24-bit signals via the digital inputs so as not Dimensions - H x W x D 115 x 430 x 360 mm to be source material limited unless stated. (4.5 x 16.9 x 14.7”)