Vac Phi 30/30 User Manual

F30/30The VAC Phi Thirty/ThirtyStereophonic Triode Power AmplifierOperation & Maintenance Information Valve Amplification CompanyManual issued 02/

8OPERATIONBy time delay, sound will begin approximately 60 seconds after turn on.As with all high fidelity products, the sound characteristic of the V

9INSTALLING NEW OUTPUT TUBESOutput tubes are type 300B. Replacement 300B output tubes should be purchased from VAC. Itis important that the tubes be c

10CHECKING OUTPUT TUBE CONDITIONAs described at the beginning of this manual, the Phi 30/30 is equipped with the 300B Sentrycircuit, which continuousl

11REPLACEMENT OF LOW LEVEL TUBESAll power must be switched off. Allow tubes to cool down. Remove the top glass cover. Removeand replace with new tubes

12TIPS & ADVICE SECTIONA Word About Tubes in GeneralIt is true that each brand of tube sounds different in a particular high resolution circuit. T

13Tips: Output TubesYour VAC Amplifier uses the 300B or 300A filamentary triode. It is strongly recommended thatreplacement tubes be purchased only fr

14Tips: Impedance MatchingWe strongly suggest that you experiment with the three available impedance connections for thebest sonic match with your sys

15Tips: Audio GroundingSystems incorporating single-ended interconnect cables (“RCA cables”) are prone to a problemknown as “ground looping”, which ca

16SPECIFICATIONSThe VAC Phi Thirty/Thirty has been developed with the critical ear as the major arbiter of quality, withboth conventional and unique m

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

PLEASE READ CAREFULLYYour Phi Thirty/Thirty is fitted with a thermal sensor circuit. It works in conjunction with the individualindicator lights locat

1CAUTIONTHE AMPLIFIER AND POWER SUPPLY CONTAIN NO USER SERVICEABLE PARTS. DO NOT REMOVE THEBOTTOM PLATES OR CHASSIS COVERS. LETHAL VOLTAGES ARE PRESEN

2INTRODUCTIONThe Phi Thirty/Thirty is a unique power amplifier. It allies purist amplifying devices with the power andsolidity required to control mod

3UNPACKING & ASSEMBLYThe vacuum tubes and glass covers are packed individually to prevent damage, and must be fittedto the amplifier before instal

4The front glass has the etched VAC logo. Install this between the front pillars.Take great care not to scratch this glass.The front glass fits into a

5Tighten the four white nylon setscrews that secure the front glass using thetool provided. Turn clockwise to tighten.Do not over tighten.Install the

6INSTALLATION01)Attach the cord from the power supply to the amplifier and screw the connector collardown fully; this takes many turns. 02)Select eith

7INPUT CONNECTORSXLR connection, balanced or single-ended, are made to the XLR jacks on therear panel.The INPUT SELECT toggle switches is set to the B