User manual CAMBRIDGE AUDIO AZUR 640P

[. . . ] Both are designed to produce high gain and linearity, without requiring massive amounts of negative feedback to achieve low distortion. These new models also employ a single-ended `Class A' gain stage with audiophile passive RIAA equalisation. High quality components are used throughout such as 1% metal film resistors and close tolerance polypropylene capacitors. Matthew Bramble Technical Director 2 Azur phono pre-amplifier 540P/640P Phono pre-amplifer CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Important safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Rear panel connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 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. The blue LED on the front panel will indicate that the power is on. The unit has been designed to be left permanently powered. 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 that your turntable is properly connected. Check that your speakers are properly connected. 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 no connections are loose or defective. 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 cosmetic damage or damage due to acts of God, accident, misuse, abuse, negligence, commercial use, or modification of, or to any part of, the product. 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. Any unauthorised repairs will void this Warranty. This Warranty does not cover products sold AS IS or WITH ALL FAULTS. [. . . ]