VAC Statement 450 Specifikace

The VAC Statement 450Mono Beam Power AmplifierOperation & Maintenance Information Valve Amplification CompanyManual issued 09/22/2010Revised 01/19

9OPERATIONSound will begin approximately 45 seconds after turn on.As with all high fidelity products, the sound characteristic of the VAC changes some

10INSTALLING NEW OUTPUT TUBESFirst, see the SAFETY NOTICE earlier in the manual.Output tubes are type KT88. Replacement output tubes should be purchas

11CHECKING OUTPUT TUBE CONDITION / OUTPUT TUBE BIAS ADJUSTMENTBias settings it should be checked when you install your amplifier and approximately onc

12REPLACEMENT OF LOW LEVEL TUBESAll power must be switched off. Allow tubes to cool down. Remove the top glass cover. Removeand replace with new tubes

13TIPS & ADVICE SECTIONTips: FusesYour amplifier is designed to use “slow blow” type fuses. These are contained in the fuse drawerbuilt into the p

14Tips: A Word About Tubes in GeneralIt is true that each brand of tube sounds different in a particular high resolution circuit. This is becauseno tw

15Tips: Output TubesYour VAC Amplifier uses the KT88 kinkless tetrode. It is strongly recommended that replacementtubes be purchased only from VAC. If

16Tips: Impedance MatchingWe strongly suggest that you experiment with the available impedance connections for the bestsonic match with your system. S

17Tips: Audio GroundingSystems incorporating single-ended interconnect cables (“RCA cables”) are prone to a problemknown as “ground looping”, which ca

18SPECIFICATIONSThe VAC Statement has been developed with the critical ear as the major arbiter of quality, withboth conventional and unique measureme

1CAUTION - SAFETY NOTICETHE AMPLIFIER AND POWER SUPPLY CONTAIN NO USER SERVICEABLE PARTS. DO NOT REMOVE THEBOTTOM PLATES OR CHASSIS COVERS. LETHAL VOL

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

2INDEXIntroductionInstallationInstalling the front glass and top barsInput connectorsOperationIlluminated LogoInstalling New Output TubesBiasing &

3INTRODUCTIONThe Statement 450 is a unique power amplifier, and the most powerful and detailed in VAC’shistory. Featuring a new direct-coupled input &

4INSTALLATION01)Place the power supply in its final location. It is quite heavy, and will become more so whenthe amplifier is installed on top of it.

505)Carefully install the front glass and top rails (see detailed directions in the next section of thismanual). Take care not to chip or scratch the

617)Connect both of the cables between the power supply an d the audio chassis. Note thateach has a locating key and a locking collar. Be sure to inse

7INSTALLING THE FRONT GLASS AND TOP RAILSYour amplifier has been shipped with the front glass and the top rails removed.The following steps show how t

8The top tube cage bars have a spring pin in each end.To install, place one of the spring pins into one of the small dimplesmachined into one of the s