User manual CAMBRIDGE AUDIO AZUR 640P

[. . . ] The 640P uses more exotic amplification circuitry to provide even lower distortion and noise plus the higher gain stage for MC cartridges. In addition, the 640P employs multi-parallel capacitors to achieve exceptional RIAA accuracy of only 0. 3dB up to 50kHz and features a defeatable subsonic filter. Now we invite you to sit back, relax and enjoy! About this phono pre-amplifier The design of a high quality but cost-effective phono pre-amplifer presents a major challenge. Providing first-class performance on an unlimited budget is one matter; achieving the same performance within tight price limits is quite another, and requires all the expertise and experience that Cambridge Audio brings to its product design process. [. . . ] Do not route the power cable so that it can be walked upon or damaged by other items near it. Electronic audio components have a running in period of around a week (if used several hours per day). This will allow the new components to settle down, the sonic properties will improve over this time. If you do not intend to use this unit for a long period of time, unplug it from the mains socket. Do not use any cleaning fluids containing alcohol, ammonia or abrasives. These units are not user serviceable, never attempt to repair, disassemble or reconstruct the unit if there seems to be a problem. A serious electric shock could result if this precautionary measure is ignored. In the event of a problem or failure, please contact your dealer. Azur phono pre-amplifier 3 REAR PANEL CONNECTIONS azur 540P MM Phono Pre-Amplifier 12V Designed in London, England www. cambridge-audio. co. uk L R L R Turntable Ground azur 640P MM/MC Phono Pre-Amplifier 12V Designed in London, England www. cambridge-audio. co. uk L MM L R MM MC R Cartridge Type L R Turntable Ground On 0. 5 A Use supplied PSU only!R Output L This device complies with part 15 of FCC rules MM R L Phono Input Off 0. 5 A Manufactured in an R Output L Subsonic Filter R MC ISO9002 approved facility Use supplied PSU only! This device complies with part 15 of FCC rules Manufactured in an ISO9002 approved facility 540P MC input sockets (640P only) If your turntable uses a moving coil cartridge, connect outputs here (0. 5-1mV, with 100 ohm 220pF loading). 640P Subsonic Filter (640P only) The subsonic filter cuts out very low frequency `rumble', caused by vinyl imperfections, which can affect your system's performance. MM input sockets If your turntable uses a moving magnet cartridge, connect outputs here (3-5mV, with 47k ohm 220pF loading). Output sockets Use phono cables to connect to any line level input on your amplifier, such as Aux. Do not connect to a phono level input. Turntable ground If your turntable has a separate grounding lead then connect here. This provides shielding to the arm and the sensitive circuitry in the turntable. PSU socket Once you have completed all connections to the amplifier and turntable, plug the PSU power cable into an appropriate mains socket. Please note the 640P has an output relay, which after power on takes 15 seconds to come out of mute. Only use supplied power supply. Cartridge Type selector switch (640P only) Match this switch to the cartridge type that your tunrtable uses. MM for a moving magnet cartridge or MC for a moving coil cartridge. 4 Azur phono pre-amplifier L L R 540P/640P Phono pre-amplifer only one of these connections To any line level input on you amplifier using phono cable (2RCA-2RCA) Must not be connected to a phono level input From a turntable with a moving magnet cartridge using phono cable (2RCA-2RCA) To any line level input on you amplifier using phono cable (2RCA-2RCA) Must not be connected to a phono level input From a turntable with a moving magnet cartridge using phono cable (2RCA-2RCA) From a turntable with a moving coil cartridge using phono cable (2RCA-2RCA) azur 540P MM Phono Pre-Amplifier 12V Designed in London, England www. cambridge-audio. co. uk L R L R Turntable Ground azur 640P MM/MC Phono Pre-Amplifier 12V Designed in London, England www. cambridge-audio. co. uk L MM L R MM MC R Cartridge Type L R Turntable Ground 0. 5 A Use supplied PSU only! On R Output L This device complies with part 15 of FCC rules MM R L Phono Input Off 0. 5 A Manufactured in an R Output L Subsonic Filter R MC ISO9002 approved facility Use supplied PSU only! This device complies with part 15 of FCC rules Manufactured in an ISO9002 approved facility 540P 640P Azur phono pre-amplifier 5 L L R TROUBLESHOOTING There is no power Ensure the AC power cord is connected securely. Ensure the plug is fully inserted and is switched on. SPECIFICATIONS 540P Max power consumption Gain @ 1kHz Nominal output Sensitivity for nominal output THD 20Hz-20kHz RIAA curve accuracy 5W 39dB 300mV 3. 35mV 640P (MM) 5W 39dB 300mV 3. 35mV 640P (MC) 5W 55dB 300mV 0. 5mV There is no sound Make sure the unit is plugged in. Check all connections are secure and correct amplifier input is selected. Ensure correct cartridge type has been selected (MM or MC). There is no sound on one channel Check that your speakers are properly connected. Check all connections are secure. <0. 009% <+/-0. 65dB 25hz-20kHz <0. 005% <+/-0. 3dB 20Hz-50kHz (subsonic filter off) <0. 002% <+/-0. 3dB 20Hz-50kHz There is a loud buzz or hum Check turntable or tone arm for ground and connection lead fault. Ensure that your turntable is not too close to the amplifier. Signal to noise ratio using Audio Precision RIAA-1 with grounded inputs >85dB >86dB >72dB Crosstalk @ 20kHz Dimensions (HxWxD) mm inches Weight kg lbs >76dB >83dB >69dB Volume is too loud/quiet Check cartridge type matches input type. If a MC cartridge is connected through the MM inputs, volume will be very quiet (and vica versa). [. . . ] This Warranty does not cover damage due to improper operation, maintenance or installation, or attempted repair by anyone other than Cambridge Audio or a Azur phono pre-amplifier 7 Cambridge Audio dealer, or authorised service agent which is authorised to do Cambridge Audio warranty work. REPAIRS OR REPLACEMENTS AS PROVIDED UNDER THIS WARRANTY ARE THE 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 PROHIBITED BY LAW, THIS WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER EXPRESS AND IMPLIED WARRANTIES WHATSOEVER INCLUDING, BUT NOT LIMITED TO, THE WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PRACTICAL PURPOSE. [. . . ]