VAC Phi 220 Especificações

F200The VAC Phi Two HundredStereo Beam Power AmplifierOperation & Maintenance Information Valve Amplification CompanyManual issued 01/02/2009Rev

9CHECKING OUTPUT TUBE CONDITIONThe condition of each individual KT88 output tube should be checked with the built in indicator LEDlights, located behi

10REPLACEMENT OF LOW LEVEL TUBESAll power must be switched off. Allow tubes to cool down. Remove and replace with new tubesof the appropriate types. N

11TIPS & ADVICE SECTIONA Word About Tubes in GeneralIt is true that each brand of tube sounds different in a particular high resolution circuit. T

12Tips: Output TubesYour VAC Amplifier uses the KT88 kinkless tetrode. It is strongly recommended that replacementtubes be purchased only from VAC. If

13Tips: Impedance MatchingWe strongly suggest that you experiment with the available impedance connections for the bestsonic match with your system. S

14Tips: Audio GroundingSystems incorporating single-ended interconnect cables (“RCA cables”) are prone to a problemknown as “ground looping”, which ca

15SPECIFICATIONSThe VAC Phi has been developed with the critical ear as the major arbiter of quality, with bothconventional and unique measurements pr

WARRANTYYour equipment is warranted for a period of thirty (30) days from the date of purchase. In addition, if theregistration form is received by VA

1CAUTION - SAFETY NOTICESTHE AMPLIFIER CONTAINS NO USER SERVICEABLE PARTS. DO NOT REMOVE THE BOTTOM PLATESOR CHASSIS COVERS. LETHAL VOLTAGES ARE PRESE

2INDEXIntroductionInstallation - StereoMono Connections / Mono Switch (option)OperationInstalling New Output TubesBiasing & Checking Output Tube C

3INTRODUCTIONThe Phi 200 is a unique power amplifier, and one of the most vivid and detailed in VAC’s history,second only to the larger Phi 300.1. Fea

4INSTALLATION - STEREO USE01)Install the vacuum tubes. Each tube or its box has a “V” number, which corresponds to thelabels on the top plate of the a

5be aware that different power cords can alter the sound.15) Check the bias settings of the output tubes when the unit is first installed and whenever

6MONO CONNECTION - with Mono Switch optionFor 200+ watt mono operation:1)Set the MONO SWITCH to “Mono”.2)Ensure that the two BALANCE/SE switches are

7OPERATIONPower on early units is applied with a front panel push button switch. Note how you are pushingthe button if ‘contact bounce’ occurs, and yo

8INSTALLING NEW OUTPUT TUBESFirst, see the SAFETY NOTICE earlier in the manual.Output tubes are type KT88. Replacement output tubes should be purchase