Nagra HD PREAMP Owner'S Manual Download | Manualshive

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Summary of Contents for HD PREAMP

Page 1: ...HD PREAMP OWNER S MANUAL HD PREAMP OWNER MANUAL RELEASE 2019 ...

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Page 3: ...timate sonic performance Numerous awards have been bestowed upon Nagra for its technical innovation excellence in design and flawless construction including three Oscars and one Emmy The professional and Hi Fi ranges are both designed by our Research and Development department Nagra has launched a Hi Fi range to allow the wider public to benefit from technical advances that are often the sole priv...

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Page 5: ...assis 16 Audio inputs 17 Bypass inputs 18 Audio outputs 19 Rear panel power supply chassis 20 About ground post 20 OPERATION OF YOUR HD PREAMP 22 Power on Audio input selection 22 Audio output selection 22 Nagra modulometer 22 Light intensity adjustment 23 Modulometer IN OUT 23 Volume control synchronization warning LED 23 Mute 23 IR Remote Control Unit 24 Use of a universal IR Remote Control Unit...

Page 6: ...ating voltage before switching your device ON The HD PREAMP is CLASS I equipment It is essential that it is connected to a MAINS socket outlet with a protective earthing connection The HD PREAMP must not be exposed to dripping or splashing liquids and no objects filled with liquids such as vases should be placed on the machine Never try to open your HD PREAMP when it is powered to prevent the risk...

Page 7: ...ine any responsibility for damages resulting directly or indirectly from the use of our products and from the use of any components or spare parts other than those designated as original approved parts by Audio Technology Switzerland SA As we constantly strive to improve our products we reserve the right to modify them or change their specifications without notice Package contents The package of y...

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Page 10: ...ld not be impeded by covering the ventilation openings with items such as newspapers table cloths curtains etc Horizontality adjustment of the chassis HD PREAMP HD PSU Each chassis has four decoupling feet whose height can be adjusted with a wheel knurled part Turning the wheel adjusts the height of the foot and thus the level of the chassis When the chassis are installed one on top of the other t...

Page 11: ... regulated voltages sent to the audio device chassis through two umbilical cords with LEMO plugs These umbilical cords are supplied with the HD PREAMP Connection to the Mains Push the Mains appliance inlet switch at the back of the power supply chassis into the 0 OFF position Insert the Mains cord into the IEC connector of the power supply chassis 02 NAGRA HD PREAMP INSTALLATION 010 011 ...

Page 12: ...ease note that the red dot on the LEMO plugs must be facing up before trying to insert them into the chassis sockets You will hear a click indicating that the plug is securely locked in Repeat the procedure with the other ends of the umbilical cords inserting them into the LEMO sockets at the back of the audio device chassis in the same way To disconnect the LEMO plug hold the knurled section of t...

Page 13: ...ortant because the power supply chassis have different output configurations The fuse holder located in Mains appliance inlet between the IEC connector and the switch includes a replacement fuse The fuse type is FST 5x20mm 250V Should you need to replace it use only the same fuse type and value T 3 15A L for 100V to 127V versions T 2A L for 230V to 240V versions If you connect the wrong power supp...

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Page 15: ...tch and warning LED for pre heating channels out of balance status 5 MUTE switch with reminder LED 6 RCA XLR outputs selection switch 7 Front rotary selector 1 3 5 6 2 7 4 When turned ON the HD PREAMP will enter a 4 minute preheating phase in order to optimize tubes and warm up critical components This will allow your HD PREAMP to offer excellent performance for a longer period of time Note Should...

Page 16: ... 5 6 2 4 WARNING Both XLR and RCA inputs are unbalanced Balancing transformers for XLR inputs are available as an option XLR outputs are balanced RCA outputs are balanced or unbalanced selection with switch Please find more details in the following paragraphs Be careful when cabling sources and amplifiers to your HD PREAMP to properly connect them with the appropriate cables so as not to decrease ...

Page 17: ...R2 and RCA3 inputs have adjustable sensitivity Three switches located next to the left channel inputs are dedicated to set sensitivity of XLR1 XLR2 and RCA3 inputs on both channels simultaneously XLR1 XLR2 Studio 10V High 2V Low 1V recommended position RCA3 BYPASS RCA3 disabled High 2V Low 1V Note When sensitivity is adjusted you should switch the HD PREAMP off front rotary selector to OFF and the...

Page 18: ...he pins of the XLR Bypass inputs and the XLR output connectors are directly coupled for a true balanced signal path CD Here is an example of a configuration using the BYPASS direct path Home cinema processor NAGRA CD NAGRA HD DAC X NAGRA HD PREAMP NAGRA HD AMP NAGRA HD AMP WARNING Please note that when the HD PREAMP is in Bypass mode the volume control is bypassed too The signal is directly routed...

Page 19: ...in 1 of XLR is not routed to mains earth preamplifier chassis GROUNDED means audio ground pin 1 of XLR is routed to mains earth preamplifier chassis RCA balanced or unbalanced SYMETRICAL UNGROUNDED means the cold point of the two upper RCA connectors is not connected to the audio ground They are in floating balanced configuration GROUNDED means the cold point of the two upper RCA connectors is con...

Page 20: ...ter device REMOTE OUT 4x to drive slave devices 2 LEMO power supply outputs Analog 9p Digital 7p 3 Mains appliance inlet with switch and fuse voltage version fuse value information 4 Ground post About ground post This feature is seldom used but can sometimes come in handy to solve specific setup issues Your NAGRA dealer will assist you on when and how to use this connector ...

Page 21: ...02NAGRA HD PREAMP INSTALLATION 020 021 ...

Page 22: ...the audio device chassis front panel Nagra modulometer The Nagra modulometer is inherited from the second recorder developed by Nagra back in 1952 the Nagra II The Modulometer is a typical Nagra precision instrument that displays the necessary information to achieve the best possible audio level setting In the case of the HD PREAMP the modulometer displays either the selected audio input level or ...

Page 23: ...LED Pulling down the switch will deactivate the muting and turn the yellow LED off The HD PREAMP outputs will be working again Warning LED Blinking during preheating process ON when preheating is ended and volume controls are desynchronized OFF when preheating is ended and volume controls are synchronized Desynchronization of both volume controls They can be moved separately Synchronization of bot...

Page 24: ...PREAMP Right balance on right volume control HD PREAMP Standard commands from left to right PLAY PAUSE STOP CD Direct input selection HD PREAMP Balance reset HD PREAMP Next input selection HD PREAMP Previous input selection HD PREAMP Left balance on right volume control HD PREAMP Volume down HD PREAMP Short press next track CD or Long press fast forward CD HD PREAMP CD Note To protect the Li batte...

Page 25: ...nnected to the REMOTE IN socket of the power supply chassis and volume keys To move both left and right volume controls simultaneously either up or down press on key briefly for a 0 5dB change or longer for bigger volume differences The volume controls can be set to work either in synchronized mode or in desynchronised mode and keys With synchronized volume controls No effect With desynchronized v...

Page 26: ...thing is OK if not the 3x AA dry cells are exhausted and must be exchanged Battery installation exchange in docking station Open the battery box by removing the bottom panel of the docking station magnet lock Insert your thumb nail into the groove and lift the panel up Replace empty batteries with 3x new AA dry cell batteries Note WhentheLiBatteryintheRemoteControlUnitisfullycharged the docking st...

Page 27: ...ey HD PREAMP 1 16 XLR1 2 16 XLR2 3 16 RCA1 4 16 RCA2 5 16 RCA3 12 16 Power ON OFF 13 16 Mute 16 16 Volume up 17 16 Volume down 20 16 Balance reset 26 16 Right balance 27 16 Left balance 32 16 Input change step up 33 16 Input change step down CD 0 20 0 1 20 1 2 20 2 3 20 3 4 20 4 5 20 5 6 20 6 7 20 7 8 20 8 9 20 9 32 20 Short press next track 33 20 Short press track restart 48 20 Pause 50 20 Long p...

Page 28: ...he HD PREAMP is switched ON the front rotary switch turns itself to the selected input before it was last switched off If you manually turn the front rotary switch to the OFF position when TIP and RING are shorted it will turn itself back to the last selected input Use standard straight cable to connect the different devices except for the REM REMOTE IN input of a slave Nagra MPS For more informat...

Page 29: ...ns appears please contact your Nagra dealer to order an HD PREAMP replacement tube kit HD PREAMP software update The update is carried out with two MicroSD memory cards one for the audio device and one for the power supply You will be advised of the availability of any updates by your dealer who will install them Case cleaning Clean the HD DAC X casing by using a soft non fluffy slightly damp clot...

Page 30: ...ut command Output switching by relay Home automation 1x SUB D9 connector RS232 115200 bits s 8 data bits no parity 1 stop bit Mains power 100V 115V 120V 127V 230V or 240V NOT ADJUSTABLE 10 50 60 Hz Power consumption 170W max Mains fuse 230V to 240V 100V to 127V T 2A L T 3 15A L FST 5x20mm 250V FST 5x20mm 250V Operating temperature 15 C to 35 C 59 F to 95 F Moderate climate Operating environment In...

Page 31: ...MADE IN SWITZERLAND MANUFACTURER AUDIO TECHNOLOGY SWITZERLAND NAGRA EDITION 2019 ...

Page 32: ...nagraaudio com ...

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