VAC Phi Beta Triode Operation & Maintenance Information Download Page 1 | Manualshive

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The VAC Phi Beta

Triode Preamplifier

Operation & Maintenance Information

Valve Amplification Company

Manual issued 02/15/2008

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Summary of Contents for Phi Beta Triode

Page 1: ...F The VAC Phi Beta Triode Preamplifier Operation Maintenance Information Valve Amplification Company Manual issued 02 15 2008...

Page 2: ...TUBES BECOME HOT ENOUGH TO CAUSE SERIOUS BURNS NEVER TOUCH A TUBE WHEN THE UNIT IS ON IT MAY TAKE SEVERAL MINUTES FOR THE TUBES TO COOL DOWN AFTER THE UNIT IS SWITCHED OFF IT IS STRONGLY RECOMMENDED T...

Page 3: ...ssible optimizing performance into either balanced or single ended loads and allowing ground loops to be broken The optional phono stage uses triode tubes operating without loop feedback Gain is moder...

Page 4: ...the connections used IMPORTANT READ THE SECTION ON OUTPUTS GROUNDING SWITCH 7 Output to a recording device tape recorder CD recorder etc may be obtained from the TAPE OUT jacks The adjacent switch for...

Page 5: ...y and be aware that different power cords can alter the sound The power supply s backlit meters show variation in power line voltage as reflected to the audio circuitry 12 12 volt triggers are provide...

Page 6: ...f using the tape outputs the TAPE OUT switch must be set to ON Two phono inputs are provided for MC and MM cartridges The ground lead from the turntable should be connected to the binding post located...

Page 7: ...sound may be different This is also normal for high resolution audio equipment Optimum sound should return after a few hours of operation preferably with an audio signal Note that although your VAC S...

Page 8: ...llumination In the VARIABLE mode the Phi functions as a conventional preamplifier The SET mode allows the control of volume to be determined entirely by the source component This is useful when the Ph...

Page 9: ...2 may be connected in the same system so that in essence there are two phono inputs selectable from the front panel Selector This switch selects between IN1 through IN6 and the PHONO inputs Rotate cou...

Page 10: ...wand is powered by two AAA batteries These should be of the alkaline type You will need to install them in the wand before using the remote Since batteries can leak they should be removed from the wan...

Page 11: ...s in the socket and pins of the tubes taking care to make sure that pin pattern corresponds to holes in tube socket Replace the cover before reconnecting and operating the preamplifier In the event th...

Page 12: ...if the manufacturer you prefer is rare you may want to purchase a few spare tubes for the future How long should tubes last It has long been known in professional circles and probably now forgotten th...

Page 13: ...ished in a durable black powder coat paint while the fascias are hand rubbed acrylic lacquer The lacquer should be treated in much the same fashion as a high quality automotive finish Never apply any...

Page 14: ...______________________________ ________________________________________________________________________ Telephone _______ _______ _____________ e mail __________________________________ Dealer name __...

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