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Integrated amplifier
User’s manual
2
azur
651A
Your music + our passion
ENGLISH
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Contents Introduction Introduction .............................................................................................. 2 Thank you for purchasing this 651A Amplifier. We are confident that you will enjoy many years of listening pleasure from it. Like all Cambridge Audio products the 651A adheres to our three core principles – stunning Important safety instructions.................................................................. 3 performance, ease of use and incredible value. Limited w
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azur 651A Important safety instructions For your own safety please read the following important safety instructions carefully before attempting to connect this unit to the mains power supply. They will also enable you to get the best performance from and prolong the life of the unit: 1. Read these instructions. The lightning flash with the arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of un-insulated 2. Keep these instructions. ‘dangerous voltage’ w
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Limited warranty Cambridge Audio warrants this product to be free from defects in Ventilation materials and workmanship (subject to the terms set forth below). IMPORTANT – The unit will become hot when in use. Do not place anything Cambridge Audio will repair or replace (at Cambridge Audio's option) this on top of the unit. Do not place in an enclosed area such as a bookcase product or any defective parts in this product. Warranty periods may vary or in a cabinet without sufficient ventilation. f
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azur 651A Rear panel connections 1 4 5 10 3 2 7 8 9 6 1 7 Power On/Off Pre-Out Switches the unit on and off. This switch is a master on/off control that These outputs can be used to connect to the inputs on an external power completely powers down the unit. amplifier or an active subwoofer, etc. 2 8 AC power socket Record Out 1/2 Once you have completed all connections to the amplifier, plug the These two identical output sockets can be connected to a tape deck or AC power cable into an appropria
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Connections Note: Before making any connections, make sure that the 651A is turned Basic connection off. The diagram below shows the basic connection of your amplifier to a CD player and a pair of loudspeakers. When designing our amplifiers we include features that allow you to connect your system in various ways. The inclusion of features such as Pre-Out and Speaker B connections mean that you can flexibly configure your system depending on your requirements. Right Left speaker speaker Black Red B
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azur 651A Speaker B connections The Speaker B connections on the back of the amplifier allow for a second set of speakers to be used (i.e. speakers located in another room). The Speaker A/B button on the remote control allows the two sets of speakers to be toggled on and off. Refer to the Remote Control section of this manual for more information on the Speaker A/B operation. Set either A or B, or both A and B may be selected for use. Note: When using two pairs of speakers, use speakers with a m
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Connections cont. The 651A also works with most builds of Linux using the native Audio 1.0 USB audio connections driver. Because Linux builds vary according to their creator’s choice of The diagram below shows how to connect the amplifier to a personal software components including drivers, it is not possible to guarantee computer via USB connection. Connect a USB ‘B-A’ type lead from the operation and Audio drivers may need to be loaded. 651A USB input to one of the USB ports on the PC. ‘Class
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azur 651A Front panel controls 4 5 1 2 3 6 7 8 9 10 11 12 1 8 Standby/On Volume Switches the unit between Standby mode (indicated by dim power LED) Use to increase or decrease the level of the sound from the outputs of the and On (indicated by bright power LED). Standby is an eco power mode amplifier. This control affects the level of the loudspeaker output, the pre- where the power consumption is less than one watt. The unit is designed amp output and the headphone output. It does not affect th
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Remote control The 651A is supplied with an Azur Navigator remote control that operates Play/ Stop/ Pause both this amplifier and Cambridge Audio Azur range CD players. Insert Press the relevant button to play, stop or pause the CD. the supplied AAA batteries to activate. The functions relevant to the amplifier are as follows: Skip Right Skip Press to skip forward by one track on the CD. Standby/On Left Skip Press to skip backward by one track on the CD. Switches the amplifier betwee
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azur 651A CAP5: Five-way protection system Cambridge Audio has developed a proprietary protection system to 5. Intelligent clipping detection ensure reliability and long life of its amplifiers. This protection system Indicator – Volume is nudged down automatically. comprises five main protection methods: Description – CAP5 has the ability to detect when the amplifier starts to clip or overdrive at its output, which can damage loudspeakers and 1. DC detection degrade the sound. Clipping distortion i
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Technical specifications Troubleshooting 651A There is no power Power output 75 watts (into 8Ω) Ensure the AC power cord is connected securely. THD (unweighted) <0.002% @ 1kHz, 80% of rated power Ensure the plug is fully inserted into the wall socket and is switched on. <0.03% 20Hz - 20kHz, 80% of rated Check the unit is switched on at the rear panel. power <0.02% 20Hz - 20kHz @ 10W Check fuse in the mains plug or adaptor. Frequency response (-1dB) 5Hz - 50kHz There is no sound S/N ratio (ref 1W
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azur 651A 13 ENGLISH
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Cambridge 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 © 2011 Cambridge Audio Ltd AP30491/1
