Nagra VPA Скачать руководство пользователя | Manualshive

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P/N: 2055008151

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VPA

Ultimate 845 amplifiers

Instruction manual

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Содержание VPA

Страница 1: ...P N 2055008151 A Al ll l r ri ig gh ht ts s r re es se er rv ve ed d 2 20 01 14 4 r re ev v1 1 VPA Ultimate 845 amplifiers Instruction manual ...

Страница 2: ... tubes 6 Installation of the tube protections 7 VPA connections 8 Connecting the VPA to the source 8 Connecting the loudspeakers 8 Connecting the AC mains power 9 Operation 10 The main selector 10 Selecting the correct speaker impedance 11 Tube ageing and replacement 12 Tube compatibility 12 Tube bias adjustment 12 Technical specifications 13 Declaration of conformity 14 ...

Страница 3: ...riod of three years from the date of delivery to the user Warranty will be void if the serial number has been removed from the unit This limited warranty covers the repair of confirmed defects or if necessary the replacement of the faulty parts excluding all other indemnities All freight costs as well as customs duty and other possible charges are at the customer s expense We decline any responsib...

Страница 4: ...corders are developed by the same R D Department Nagra philosophy is to provide innovation and technology in order to design high quality products The hi fi range was created to implement innovative designs and provide Nagra expertise to a new field Thank you for being our customer and enjoy your new VPA amplifiers Package content In addition to the user manual 2x VPA monoblocks 2 mains cables Set...

Страница 5: ...e feet The VPA needs to stand on its feet to be stable please install them Turn each of the two VPA mono blocks on their side on the edge of a table Step 1 Start by removing the transportation screws Step 2 Install the feet using the longer screws provided ...

Страница 6: ...made for Nagra using state of the art Haute Horlogerie micro fiber fabric Each VPA has its own set of tubes with a serial number written on the socket Each tube is also marked FRONT or REAR which indicates the correct location for the tube on the particular amplifier This dent must face the rear of the unit Step 1 Insert the tube make sure the dent is in the correct position Step 2 Rotate the tube...

Страница 7: ...ould be careful not to get too close to the tubes and especially to keep children away from the amplifier You should also make sure to keep any object or fabric like curtains for instance away from the amplifiers to avoid any fire risk Gently slide the tube protection down Make sure the screw holes are placed above those of the VPA Using the hex screwdriver provided put the screws back in place ...

Страница 8: ...mplifier to the XLR balanced input or the RCA connector Input panel Speaker terminals Ground connector ask your dealer how to use it Voltage selector Mains switch and IEC connector The white jumper allows you to select either XLR balance input as shown on the picture or RCA unbalanced ...

Страница 9: ...mance out of your speakers Connecting the AC mains power Before connecting the AC power cables verify that the AC mains voltage selector located on the rear panel is in the correct position corresponding to the supply voltage available in your country Here the selector is on 220 V If the selector is not in the right position make sure to change it and check the fuse value 110 120V operation two 10...

Страница 10: ...onal The best performance will be obtained after 15 minutes operation warming up time Mains switch rear Main selector position What is happening O Any The unit is completely off I OFF The unit is in standby I MUTE The unit is On sound is muted I ON On To prevent tube ageing it is better leave the amplifier on for longer periods rather than turning it on and off several times a day For more informa...

Страница 11: ...ers the red pointer indicates the peak cathode current and the black pointer indicates the peak anode voltage of the output tube They will allow you to know if the impedance match is right When playing music main selector in the ON position Needle position What is happening Solution Red needle Green needle Output impedance is too high Choose a lower output 8 or 4 Ohms Green needle Red needle Outpu...

Страница 12: ...ce in a while From time to time before listening check the bias and eventually adjust it to make sure you get 100 performance out of your amplifiers Tube compatibility Nagra selected 845 tubes go through a rigorous selection 24 hour burn in individual measurement and selection and are paired using a Nagra unique process Using 845 from other suppliers will void warranty Tube bias adjustment Please ...

Страница 13: ...put power 50 W rms Input impedance 100 k Ohms Inputs 1 RCA 1 XLR balanced Selection by jumper Frequency response 20 40 kHz 0 3dB Signal to noise ratio 100 dB ASA A Output impedance 4 8 16 Ohms Bare wires up to 4 2 mm 4mm banana plugs 6 35mm spade lugs Driver tubes 2x ECC83 1 E182CC Voltage range 108 121 V or 216 242 V Japan 100 V 50 60 Hz Power consumption 250 W continuous Dimensions 335 x 115 x 3...

Страница 14: ...ng norms NORMES GENERIQUES APPLICABLES APPLICABLE GENERIC NORMS CENELEC EN 61000 3 2 61000 3 3 50081 1 50082 1 Avertissement Bien qu étant conforme aux normes cet appareil peut dans des cas exceptionnels provoquer des interférences Dans ce cas il peut être demandé à l utilisateur de prendre des mesures appropriées Warning Although this equipment conforms to the stated norms under certain exception...

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