User manual CAMBRIDGE AUDIO AZUR 851A

[. . . ] User’s manual 2 azur 851A Your music + our passion ENGLISH Integrated Amplifier Contents Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Important safety instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Limited warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Rear panel connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Front panel controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Remote control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Operating instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Amplifier setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 CAP5 - Fiveway protection system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Custom installation (C. I. ) use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Technical specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] This feature can be turned off if desired; please refer to the ‘Amplifier setup’ section of this manual for more information. 2 LCD used to control the 851A. Please refer to the ‘Operating instructions’ and ‘Amplifier setup’ section of this manual for more information. 9 Bass and Treble Press to release and rotate to allow subtle adjustments to the tonal balance of the sound. 10 Phones Direct Allows for the connection of stereo headphones with a ¼” Jack plug. Headphones with an impedance of between 32 and 600 ohms are recommended. When the headphones are connected, the loudspeaker relays are released switching off the output to the loudspeakers (speakers A and B). 3 This control gives the audio signal a more direct path to the power amplifier stage of your amplifier, bypassing the tone control circuits for the purest possible sound quality. The Bass/Treble icon (b t) appears in the display when the bass and treble circuit is active (in circuit) and is not present when they are bypassed. This setting is recalled each time a source is selected. 11 Speaker A/B Press to scroll through the speaker sets connected to the loudspeaker terminals on the back panel (speaker sets A, B or A and B). This can be used for listening to an extra set of loudspeakers in another room. Please note that care should be taken when choosing speakers if two loudspeakers are going to be used on each channel. If the combined resistance measured on the loudspeaker terminals is too low the amplifier may not switch out of Standby mode until a suitable load resistance is detected. Note: When using two pairs of speakers, use speakers with a minimum nominal impedance of 16 ohms. 4 Volume Use to increase/decrease the level of the sound from the outputs of the amplifier. This control affects the level of the loudspeaker output, the pre-amp output and the headphone output. The Volume control is also used in navigating the 851A System Configure menus on the front panel display. Please refer to the ‘Operating instructions’ section of this manual for more information on some functions of these buttons. Mode Press to switch between Volume and Balance modes. Press and hold to enter the 851A System Configure menu. 5 Infrared sensor Receives IR commands from the supplied Azur remote control. A clear unobstructed line of sight between the remote control and the sensor is required. 6 & 7 Source select buttons Push the appropriate input selection button to select the source component that you wish to listen to (highlighted by a solid circle on the display). The signal selected is also fed to the Rec Out sockets so that it may be recorded. The input should not be changed whilst recording (but the recorded signal can be checked using the Rec input). Note: Repeatedly pressing the Source 1 or Source 2 buttons will toggle these inputs between ‘Balanced’ and ‘Unbalanced’ source input. 6 azur Remote control The 851A is supplied with an Azur Navigator remote control handset that duplicates the front panel control functions and is also able to control Azur CD players and in particular the matching 851C. The supplied AAA batteries must be fitted before the remore control can be used. The Azur handset buttons function as described in the following paragraphs. Volume adjustment. 851A ENGLISH Press to toggle through the five 851C input options. Refer to ‘Operating instructions’ section of the 851C manual for more information. Select Standby/On Refer to Operating instructions’ section of the 851C manual for more information. [. . . ] Overvoltage/overcurrent detection Description - CAP5 offers V/I (voltage/current) protection by constantly monitoring the output transistors to keep them working inside their Safe Operating Area (SOA). The SOA is a set of limits given by the output transistor manufacturer to ensure reliability. The V/I protection has been incorporated within the amplifier circuitry to provide a fast response to temporary overload conditions. When the V/I protection is triggered the unit will continue to operate but distortion may be heard as the unit protects the output transistors. [. . . ]