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Weight.
0.95kg (2.1lbs).

Summary of Contents for Alva Duo

Page 1: ...1 Alva Duo Manual Generated 01 07 2022 22 41 ...

Page 2: ... What s included with the Alva Duo 5 Front panel controls 6 Rear panel 7 Getting connected 8 Auto power down APD 9 What is the difference between a moving magnet cartridge and a moving coil cartridge 10 Troubleshooting 11 Technical specifications 12 ...

Page 3: ...3 Alva Duo Last updated June 28 2022 03 30 Revision 4982 User s Manual ...

Page 4: ...ubject to change without prior notice This document contains proprietary information protected by copyright All rights are reserved No part of this manual may be reproduced by any mechanical electronic or other means in any form without prior written permission of the manufacturer All trademarks and registered trademarks are the property of their respective owners Copyright Cambridge Audio Ltd For...

Page 5: ...ou will receive 1 Alva Duo Moving Magnet Phono Preamplifier 2 Safety Guide 3 Quick Start Guide 4 UK power cord 5A fused Depending on which country the Alva Duo was purchased in EU power cord Depending on which country the Alva Duo was purchased in CU power cord Depending on which country the Alva Duo was purchased in ...

Page 6: ...de where the power consumption is less than 0 5 Watts 2 Cartridge Type Selector Switch Match this switch to the cartridge type installed on your turntable MM for a moving magnet cartridge and MC for a moving coil cartridge 3 Headphone Volume Control 4 Headphone Output Allows for the connection of stereo headphones with a Jack plug Headphones with an impedance of between 32 and 600 ohms are recomme...

Page 7: ...ntral position the output from each channel is equal 4 MM Input Sockets RCA connections used to connect to a turntable fitted with a moving magnet cartridge 5 Ground Connection Screw If your turntable has a separate grounding lead then connect here This provides shielding to the tonearm and the sensitive circuitry in the turntable 6 MC Input Sockets RCA connections used to connect to a turntable fit...

Page 8: ...ad connect this to the ground screw on the Alva Duo This reduces any potential hum or buzzing 2 Connect the signal output sockets of the Alva Duo to a line level input on your amplifier 3 Ensure that the balance control is set to the central position This can be adjusted later if necessary 4 Attach the mains power lead securely to the Alva Duo and power on the unit 5 Using the cartridge type select...

Page 9: ...led and will automatically switch to standby mode after 20 minutes of inactivity To disable Auto Power Down APD If you wish to disable the APD function then press and hold the power button for 5 seconds when in standby This can then be reset to factory defaults by plugging in the mains lead with the standby button held down ...

Page 10: ...he stylus travels along the record groove This movement causes a variation in the magnetic field inducing a small current within the coils that corresponds to the movement of the stylus This current can then be amplified for listening using a phono preamplifier Moving Coil Cartridges The principle remains the same for a moving coil cartridge with the primary difference being that in this assembly the ...

Page 11: ...y made Ensure that your speakers are properly connected There is no sound on one channel Check speaker connections and interconnects Check that the Alva Duo balance control is set centrally There is a loud buzz or hum Check that the ground lead if present is securely connected to both the turntable and Alva Duo Ensure all interconnects are secure and intact Check that your turntable is not too clo...

Page 12: ...se A Weighted 0 09uV Moving magnet 0 08uV Moving coil RIAA Curve Accuracy 0 3dB 30Hz 20kHz Signal to Noise Ratio Grounded Inputs ref 1V Output 20Hz 20kHz BW 90dB Moving magnet 70dB Moving coil THD N 1kHz 20Hz 20kHz BW 0 0025 Moving magnet 0 020 Moving coil Input Impedance 47k Ohm Moving magnet 100 Ohm Moving coil Input Capacitance 100pF Overload Margin 30dB Crosstalk 20kHz 85dB Moving magnet 75dB ...

Page 13: ...13 Weight 0 95kg 2 1lbs ...

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