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USER MANUAL

PHONO EQUALISER

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Summary of Contents for PHONO EQUALISER

Page 1: ...1 USER MANUAL PHONO EQUALISER ...

Page 2: ...he pre amp 6 Connecting the turntable 6 Connecting the optical cables 6 5 CHANGING THE SETTINGS 7 Removing the cover 7 a LED Project or Myth Series standard 7 b Input sensitivity Gain 8 c Input capacity MM 8 d Cartridge type Input impedance 9 e RIAA or 78 rpm 9 f 78 rpm filter 10 Replace the cover 10 6 OPERATION 11 Switching on 11 Standby 11 Switching off 11 7 THE 78 RPM MODES 11 8 CARE AND MAINTE...

Page 3: ...reamps It restores the actual sound quality of the records To obtain the maximum quality from this Phono equaliser it is necessary to use it with top quality audio components preferably with other Sphinx components The Phono equaliser may be used with components from the Sphinx Project Series the Myth Series and even with non Sphinx products Your local dealer will be able to answer any questions c...

Page 4: ...SPHINX Phono Equaliser 4 3 THE PHONO EQUALISER AT A GLANCE Front panel 1 LED in green for Myth Series not illuminated Standby red ...

Page 5: ...e from the pre amplifier if applicable 5 Control OUT Connect here the optical cable that goes to another Sphinx component s Control In 6 R OUT Connect this output to the right input of the pre amplifier L OUT Connect this output to the left input of the pre amplifier 7 Manufacturer s label This shows important data for the component such as serial number and mains power voltage 8 Warning This show...

Page 6: ...nnections and after the Phono equaliser has been matched to the cartridge in use see Chapter 5 Audio connections Before you start connecting equipment it is always wise to check whether all the mains power cables of all components are disconnected from the mains outlets This will prevent any damage to the loudspeakers and amplifiers caused by incorrect wiring or settings Make sure you connect L an...

Page 7: ...ono equaliser B Some values are different In that case you may have to change one or more settings You should use the following procedures to ensure correct results You may refer to the sticker inside the cover showing the settings for each DIP switch Which setting should be changed is wholly dependent on the default values that differ from your data Note If you have to change more values the orde...

Page 8: ...for cartridges with an output signal between 1 5 mV and 15 mV The Gain is set with switches 1 and 2 of the large red switch blocks one for each channel Using the value of your cartridge as marked in the table move the switches to the correct value according to one of the following pictures c Input capacity MM This setting is specifically for MM cartridges The standard value is 47 pF but some cartr...

Page 9: ...itches 4 5 and 6 If your MC cartridge needs an impedance other then 200 ohm you may select 100 ohm or 50 ohm For a MM cartridge however you can only select 51 kohm e RIAA or 78 rpm The standard replay correction is RIAA this is also suitable for many 78 rpm records The Phono equaliser can be switched to a special 78 rpm curve needed by certain records see also Chapter 7 The 78 rpm modes This is se...

Page 10: ...sised After selecting this filter the replay quality will be more according to the old standards Replace the cover After you have changed the settings we advice you to recheck whether each setting is correctly done It is also very useful to make a note of all the changes you have made for future reference Then replace the cover and tighten the screws The Phono equaliser is now ready for use with y...

Page 11: ... amplifies those below 500 Hz these points are also known as the corner frequencies or fc For 78 rpm records there have been a number of incompatible standards Research by the Sphinx designers showed however that the most commonly used standards were the RCA 2120 and 500 Hz and AES 2500 and 500 Hz These actually use the same curve as the RIAA so most 78 rpm records can properly be played with the ...

Page 12: ...nputs 2x cinch gold plated Level nominal for 1 V output 0 13 V 18 dBV Impedance 51 kohm 200 ohm 100 ohm 50 ohm selectable Capacity MM 47 pF or 147 pF selectable Outputs 2x cinch gold plated Level 1 1 V nominal 9 2 V max 19 3 dBV 1 100 000 Hz THD 0 02 Impedance 10 ohm Rumble filter 12 dB octave 10 Hz Sphinx Control 1x optical IN 1x optical OUT Power supply Internally fully stabilised Supply capacit...

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