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Summary of Contents for Nagra CLASSIC PREAMP
- Page 1 CLASSIC PREAMP User manual P/N: 2055026159 All rights reserved - © 2022 rev 1...
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Page 2: Table Of Contents
LCD display and Modulometer intensity adjustment ........ 16 Balance fine adjustment ................16 IR Remote Control Unit ................17 Using an “universal” RCU with the CLASSIC PREAMP ......18 Setting the headphones amplifier level ............ 18 Maintenance ....................20 Tube ageing ..................... 20 Case cleaning .................. -
Page 3: Safety Warning
• Never try to open your CLASSIC PREAMP when it is powered to prevent the risk of electric shock and burns. Switch it OFF, remove the Mains or the... -
Page 4: Congratulations
Congratulations Congratulations! You have just acquired one of the best preamplifiers ever made. The CLASSIC PREAMP was created by an engineering team with more than 70 years of experience designing world-class products for the professional audio, national security and military businesses. -
Page 5: Installation
The CLASSIC PREAMP must rest on a stable support. We recommend that you use the Nagra CLASSIC VFS FOR SOURCE. The Vibration Free Support for source, developed by Nagra, consists of isolated solid aluminum plates using the same silicone base damping material as the Nagra CD mechanics. -
Page 6: Powering The Classic Preamp
Powering the CLASSIC PREAMP The CLASSIC PREAMP can be powered either by its own internal power supply or by an external +12V(+12.6V) with the Nagra MPS or the CLASSIC PSU. In the first case, simply use the AC Mains cable provided. -
Page 7: Cmd Signal From The Classic Psu
CLASSIC PSU to perform a clean power on and power off sequence of the CLASSIC PREAMP. Available on the CLASSIC PREAMP with a 1.09 software version or above. The usage of a LEMO power cable fully wired is mandatory (see below). -
Page 8: Connection Block On Rear Panel
The XLR inputs and outputs are unbalanced. Should you need balanced inputs or outputs, please contact your Nagra dealer. There is one set for the inputs and one for the outputs. The transformers are different, the input transformers are much more complex to build and thus are more expensive. -
Page 9: Front Panel
LCD display and Modulometer backlight intensity switch, pushed up will increase the intensity, down will reduce it, there are 7 intensity levels Nagra Modulometer indicates the output level in dB, reference 0 dB = 1 V rms LCD Display Controller knob... -
Page 10: Operations
Setting your CLASSIC PREAMP Thanks to its LCD display and the controller, you will be able to personalize your CLASSIC PREAMP to fully integrate it within your system. Please take some time to learn more about the settings that you can change to enjoy more music. - Page 11 Here is the menu tree or map, that will help you localize the function you are looking for. It may look complex, but actually once you have set-up your CLASSIC PREAMP, you won’t need to change it often or at all!
- Page 12 If you are unhappy with the name you have chosen, you can reset all the input names to factory settings. Go in the menu: Push once. In.Names Rotate to display « Restore ». Editing Push once. Restore Push once, the factory names have been restored. Confirm Nagra - CLASSIC PREAMP...
- Page 13 This remote control unit uses standard RC5 codes from Philips. It is called « RC5 » in the menu. However, you may also use it with the older Nagra RCU or RCU II remote control units that work with the RECS-80 protocol. In this case, you should change the device number here: In the menu, rotate the knob until «...
- Page 14 About This part of the menu provides you useful information about your CLASSIC PREAMP device: In the menu, rotate the knob until « About » displays, then About press it once to enter the selection and rotate it again to display the different parameters.
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Page 15: Bypass Input
The BYPASS input is a nice feature that allows a second system, a home cinema for instance, to be linked to the main amplifier connected to your CLASSIC PREAMP. The BYPASS is active when the CLASSIC PREAMP front rotary selector is turned to the OFF position. -
Page 16: Nagra Modulometer
In total there are 7 different levels. Balance fine adjustment The balance is often regarded as not mandatory by many manufacturers. At Nagra, we believe it is useful to adjust some minor left/right impairments, typical of LP cutting. This is the reason the CLASSIC PREAMP Balance setting is intended for fine adjustments that will affect Left/Right balance by just 3 dB. -
Page 17: Ir Remote Control Unit
The CLASSIC PREAMP currently comes with the RCU-III IR Remote Control Unit with Philips RC-5 format encoding. You may also use a Nagra RCU or RCU-II IR Remote Control Unit. Make the necessary setting in the « REMOTE » menu. -
Page 18: Using An "Universal" Rcu With The Classic Preamp
DC power cables from the CLASSIC PREAMP back panel or turn the CLASSIC PREAMP Mains switch on the back panel to the 0 position and disconnect the Mains power cable from the C14 IEC Appliance inlet. Wait for 15 minutes before any intervention into your device. - Page 19 Also be careful of possible high-level differences when switching from the external output to the headphones output and vice versa. HEADPHONES OUTPUT This equipment is capable of producing high sound levels which can be harmful to your hearing Nagra - CLASSIC PREAMP...
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Page 20: Maintenance
Presence of pops, short noise in the low frequencies • Presence of hiss, higher background noise As soon as one of these signs appears, please contact your Nagra dealer to order a CLASSIC PREAMP replacement tube kit, reference 7055764000. Case cleaning Clean the CLASSIC PREAMP casing using a soft, lint-free, slightly damp cloth. -
Page 21: Technical Specifications
6.3 mm (¼”) stereo Jack Adjustable output level via volume level potentiometer & internal jumpers (see page 18-19) Vacuum tubes 2x 12AX7/ECC83 Selected by Nagra Laboratory 1x 12AT7/ECC81 Power supply 1x 12 V / 1 A With MPS, Classic PSU 1x 12.6 V... -
Page 22: Accessories
ATS ref Part description Comment 7055026060 Input symmetrical transformers kit 7055026070 Output symmetrical transformers kit 7055328000 Remote Control Unit Spare unit 7055764000 Tubes kit Spare tubes 4181310500 FST 5x20mm 250V - T 500mA L Spare fuse Nagra - CLASSIC PREAMP... - Page 23 For more detailed information about recycling of this product, please contact your local authority, your household waste disposal service or the shop where you purchased the product. Applicable to the following devices: Nagra CLASSIC PREAMP and all the package contents Nagra - CLASSIC PREAMP...
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