owners manuaL naC 122x enGLIsH
Contents
1. very high levels of radio frequency radiation and both the choice and exact siting of equipment may be critical Susceptibility to radio frequency interference is related to the wide internal bandwidth necessary for high sound quality A radio frequency filter kit is available for some Naim equipment but sound quality will be progressively compromised as more elements of the kit are fitted In situations of extreme radio interference Naim equipment may be unsuitable 2 5 Lightning Precautions Your Naim hi fi system can be damaged by lightning and should be turned off and disconnected from the mains when there is risk of lightning strike For complete protection all mains plugs and any aerial cables should be disconnected when not in use 2 6 Problems Consumer protection varies from country to country In most territories a retailer must be prepared to take back any equipment he has sold if it cannot be made to work satisfactorily A problem may be due to a fault in the system or its installation so it is essential to make full use of your dealer s diagnostic skills Please contact your local distributor or Naim Audio directly if any difficulties cannot be resolved Some Naim equipment is made in special versions for different territories and this makes it impracticable to arrange international guarantees Please establish the local guarantee arrangements with your retailer Contact Naim Audio directly for help and advice if necessa2. and socket fitted on delivery with a blanking cover is intended for use with a Stageline or Prefix RCA Phono stage and incorporates an appropriate lcd 2tun 3tape 4AV Sauxl 6aux 6aux2in amp in in in out in out in out 2in power out Inputs 1 2 amp 6 Inputs 3 4 amp 5 Input 6 j 7 alternative chl chl nc chl out ve ve ch2 ne ch2 ch2 ch2 chl out ve ve ve Note The NAC 122x features various technologies to reduce microphonic effects Some movement of the board and sockets when connecting and disconnecting cables is normal DC power supply The two sockets must not be used simultaneously Note The RS232 comms interface is an optional upgrade It can be specified at time of order or fitted retrospectively Contact your local representative or Naim Audio directly for further information 4 3 NAC 122x Connected to Flatcap 2x Power Supply power switch cable direction marker mains input and fuse aeee conrorms C MMMM TO EN 60065 HE MANUAL BEFORE USE 240 5 to 5 pin DIN to stereo power amplifiers to mono or dual mono power amplifiers LoneDow Headline or Stageline Additional interconnects required NAC 122x 5 NAC 122x Specification Input Sensitivities 75MV 47kQ Overload Margins 35qB all inputs all audio frequencies Main Output Level 0 775V lt 500 Tape Output Level 75m V 600Q Auxiliary Power Outputs For Stageline Prefix phono stage Dimens
3. arallel with their DIN sockets RCA Phono and DIN sockets for the same input should not be connected simultaneously button will reveal the inputs selected for auto switching by their button indicators illuminating for a short time Repeated operation of the mon button will sequentially select each combination of CD Tuner AV inputs and auto switching disabled CD Tuner and AV button indicators off When the desired inputs selected for auto switching are indicated stop pressing the mon button 3 2 Subwoofer Output The remote handset mon key can also be used to set up automatic source switching Automatic input switching only becomes operational on exiting from program mode by pressing and holding the handset prog key The NAC 122x provides an analogue subwoofer output via a pair of RCA Phono sockets Note The subwoofer output is a duplicate of the main preamplifier output Note In a few cases some further equipment configuration may be required for auto switching to operate correctly on the AV input Please contact your retailer or local distributor for advice 3 4 AV Integration Unity Gain 3 3 Automatic Input Switching The NAC 122x incorporates an optional automatic input switching feature which can select the appropriate input as soon as any handset function for a particular Naim source component is operated For example if the tuner input is selected on the NAC 122x and the CD play key is operated on the handse
4. ay can be switched off by pressing the remote handset in preamplifier mode disp function Any subsequent handset or front panel operation will temporarily restore the display A second operation of the disp function will permanently restore the display After switch on via the power supply or power amplifier power button the NAC 122x will remain muted for 30 seconds while control systems and circuits stabilise 3 11 Remote control The NARCOM remote handset supplied with the NAC 122x duplicates all configuration and control functions The NAC 122x also provides remote control input that enables it to be integrated with remote handset RC5 signal repeaters A remote control output enables the NAC 122x to be used as an IR receiver and to generate a modulated RC5 signal To restore all programmable settings to the factory defaults press and hold the remote handset disp key while the preamplifier is in program mode The preamplifier will exit from program mode following this operation 4 1 NAC 122x Front Ds pene volume mon mute source selection NAC 122x 4 2 NAC 122x Rear njout signal ground DESNE to power amplifier with internal power supply power supply pads link plug fitted RCS in RC5 out TEOK CONFORMS C subwoofer RCA Phonos out cd RCA aux 2 RCA RS232 Phonos in Phonos in interface Note The NAC 122x AUX 2 input is provided with two sockets The right h
5. cts Please read them carefully 2 1 Siting The Equipment In order to reduce the risk of hum audible from the loudspeakers power supplies and power amplifiers should be located a reasonable distance away from other equipment The maximum separation distance for connected equipment is that allowed by the standard interconnect lead Source components and power supplies should be switched on before the power amplifiers Always switch amplifiers off and wait a minute before connecting or disconnecting any leads Always use the power switch on the product rather than a mains outlet switch A thump may be heard from the loudspeakers as power amplifiers are switched on This is normal will not cause any loudspeaker damage and does not point to any fault or problem A mild pop may also be heard shortly after equipment is switched off Naim equipment takes a considerable time to run in before it performs at its best The duration varies but under some conditions it may continue to improve for over a month Better and more consistent performance will be achieved if the system is left switched on for long periods It is worth remembering however that equipment left connected to the mains can be damaged by lightning 2 4 Radio Interference In some circumstances depending on where you live and the earthing arrangements in your home you may experience radio frequency interference Controls on broadcasting in some territories allow
6. ions H x W x D 70 x 432 x 301mm Declarations Declaration of Conformity Manufacturer Products Safety EMC Naim Audio Limited Southampton Road Salisbury England SP1 2LN NAC 122x EN 60065 Audio video and similar electronic apparatus Safety requirements EN 55013 Sound and television broadcast receivers and associated equipment EN55020 Electromagnetic immunity of broadcast receivers and associated equipment EN 61000 3 2 Limits for harmonic current emissions EN 61000 4 2 Testing and measurement Electrostatic discharge immunity Naim Audio Limited Southampton Road Salisbury England SP1 2LN Tel 44 0 1722 426600 Fax 44 0 870 2244703 W www naim audio com Products that display the crossed out wheeled bin logo cannot be disposed of as domestic waste These products must be disposed of at facilities capable of re cycling them and appropriately handling any waste by products Contact your local authority for details of the nearest such facility Appropriate recycling and waste disposal helps conserve resources and protects the environment from contamination Part No 12 001 0060 Drawing No NA906007 400
7. ry Introduction Direct contact to Naim for service or update information should be made initially through Customer Services 2 7 Service and Updates It is essential that repairs and updates are only carried out by an authorised Naim retailer or at the factory by Tel 44 0 1722 426600 Naim itself Many components are custom made tested Emoil info naim uk com or matched and appropriate replacements are often unobtainable from other sources Please quote the product serial number found on its rear panel in all correspondence NAC 122x 3 Installation and Operation The NAC 122x preamplifier does not incorporate an internal power supply but must be used in conjunction with either a Naim power amplifier incorporating a preamplifier power output or with an appropriate Naim power supply Diagram 4 3 illustrates the NAC 122x connected to a Flatcap 2x power supply Once in program mode the front panel mon button will iluminate if automatic switching is already enabled If it is 3 1 Input Sockets The input selector buttons select the source input signal to be routed to the preamplifier outputs and the power amplifier not enabled it can be switched on by pressing the front panel mon button twice With auto switching enabled pressing the front panel mon The NAC 122x has six DIN input sockets and two alternative pairs of RCA Phono sockets The RCA Phono sockets are permanently connected to the CD and AUX 2 inputs in p
8. t the NAC 122x will automatically switch to the CD input Automatic input switching can be programmed to operate independently on any combination of the CD AV and Tuner input buttons To enable automatic input switching first switch the NAC 122x into program mode by pressing and holding the prog key of the remote handset in preamplifier mode Program mode is indicated by a flashing indicator on the volume control If no function is operated within five minutes of entering program mode the NAC 122x will return to normal mode automatically The NAC 122x unity gain function enables an audio visual processor to be integrated such that its volume control takes over command of signals connected to selected NAC 122x inputs Unity gain can be selected on the AV input only To select unity gain first switch the NAC 122x into program mode as described in Section 3 3 The front panel mute button will illuminate if unity gain is selected If it is not enabled it can be switched on by pressing the mute button twice Deselect unity gain by again pressing the mute button Unity gain only becomes operational on exiting from program mode by pressing and holding the handset prog key NAC 122x Note The unity gain feature must be used with care It effectively by passes the NAC 122x volume control leaving any signal connected to a unity gain input to be passed to the power amplifier and speakers at full volume Additionally if the AV inpu
9. t is selected while unity gain is enabled the handset volume function will be disabled and the preamplifier s volume indicator will turn off This will be flagged by the indicator flashing if the handset volume function is operated 3 5 Handset Volume Control The remote handset volume function provides some alternative control characteristics A quick press and release of the key will adjust by a preset nudge A quick press and release of the key followed by press and hold will cause continual slow adjustment Simple press and hold will cause continual fast adjustment The mute button silences and restores the output signal 3 7 Record Monitor The mon button operates the record monitor circuit enabling the recorded output of a suitably equipped recording device to be heard 3 8 Record Mute In order to minimise power consumption and improve sound quality the NAC 122x record output circuits may be switched off To engage or disengage the record mute first operate the record monitor function mon as described in Paragraph 3 7 above then press the front panel mute button The mute button indicator will be illuminated when record mute is engaged and extinguished when record mute is disengaged 4 NAC 122x Control and Connection Record mute can be engaged and disengaged from the remote handset by operating the record monitor function followed by the mute function 3 9 Display The NAC 122x front panel button displ
10. world class sound ENGLISH OWNERS MANUAL 2 NAC 122x Introduction Naim Audio products are conceived with performance as the top priority Careful installation will help ensure that their full potential is achieved This manual covers the NAC 122x Preamplifier It begins with some general installation notes Product specific information begins in Section 3 1 Connections It is important for both safety and performance that the standard cables supplied are not modified 1 1 Interconnect Cables If options are available with your equipment and installation DIN interconnect sockets should be used in preference to RCA Phono sockets One end of each Naim interconnect cable is marked with a band to establish its correct orientation The band denotes the end that connects to the signal source Interconnect plugs and sockets should be kept clean and free from corrosion The easiest way to clean them is to switch off the equipment pull the plugs out of their sockets and push them back in again Contact cleaners and enhancers should not be used as the film they deposit may degrade the sound 2 General Installation Naim equipment is designed to offer the finest performance possible avoiding compromise wherever practical This can lead to circumstances that may be unfamiliar The notes that follow contain advice specifically related to Naim equipment as well as more general warnings about the use of domestic audio produ
Download Pdf Manuals
Related Search