User manual NAIM NAC 552 ISSUE 2

[. . . ] WORLD CLASS HI FI OWNERS MANUAL Preamplifiers: NAC 552, NAC 252, NAC 282, NAC 202, NAC 112 ISSUE 2 Introduction Naim Audio products are always conceived with performance as the top priority and careful installation will help ensure that their full potential is achieved. This manual begins with statutory safety warnings and general installation tips for all Naim Audio products. Product specific information begins in Section 6. 1 CONTENTS Page Section 1 1 1 Equipment Installation 2 Cables and connections 3 Getting Started 3. 1 switching on and off 3. 2 running in 3. 3 mains supply 3. 4 siting the equipment 3. 5 if you have a problem 4 Warnings 5 Connection 5. 1 mains lead 5. 2 non-rewireable mains plugs 5. 3 fuse carrier 5. 4 plug fuses 6 NAC 552 7 NAC 552 Connections 8 NAC 252 2 1 Equipment Installation Normally your Naim equipment will have been installed by the dealer who sold it to you even if you live outside their immediate vicinity. Your dealer is responsible for making sure that the system sounds exactly as it should and information given here is not intended to reduce this responsibility in any way. 2 3 2 Cables and Connections Please do not modify the standard interconnect cables supplied with your Naim equipment. [. . . ] Please contact your retailer or local distributor for advice. 10. 2 input socket mapping The NAC 282 has six DIN input sockets and two alternative pairs of Phono sockets. The Phono sockets can be mapped individually to the CD and AUX 2 input buttons in place of the DIN sockets. To switch into program mode press and hold prog from the remote handset (in preamplifier mode). Program mode is indicated by a flashing indicator on the volume control and the record select indicators extinguishing. If no function is operated within five minutes of entering program mode the NAC 282 will return to normal mode automatically. Once in programme mode press and hold the remote handset 1 button to select or de-select the phono socket input for CD, and the remote handset 6 button to select or de-select the phono socket input for AUX 2. The corresponding front panel input buttons can similarly be used to select or de-select the phono socket inputs. The appropriate input button indicator will flash three times on selection of the phono option and once on selection of the DIN option. To exit from program mode press and hold the prog key on the remote until the record select indicators are restored and the volume indicator stops flashing. 12 NAC 282 10. 4 av integration (unity gain) The NAC 282 unity gain function enables an audio-visual processor to be integrated such that the processor's volume control takes over command of signals connected to selected NAC 282 inputs. To select unity gain, first switch the NAC 282 into program mode as previously described. The front panel source mute button will illuminate if unity gain is selected. If it is not enabled it can be switched on by pressing the source mute button twice. Unity gain options only become operational on exiting from program mode by pressing and holding the handset prog key. It effectively by-passes the NAC 282 volume and balance controls 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 input is selected while unity gain is enabled the volume and balance handset functions will be disabled and their indicators will turn off. This will be flagged by the volume or balance indicators flashing if either handset function is operated. 10. 8 switch-on After switch-on, via the NAPSC and power supply, or power amplifier, power button, the NAC 282 will remain muted for 30 seconds while control systems and circuits stabilise. The source side will then un-mute automatically leaving the record side muted (and its circuits unpowered). Note: A flashing mute indicator after switch-on indicates that the preamplfier power supply or link plugs are incorrectly connected. 10. 9 remote control The NARCOM 3 remote handset supplied with the NAC 282 duplicates all configuration options. See Section 16 for more information. 10. 10 defaults 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. 10. 5 volume and balance control The remote handset volume and balance keys provide some alternative control characteristics. A quick press and release of a key will adjust by a preset "nudge". A quick press and release of a key followed by press and hold will cause continual slow adjustment. Simple press and hold will cause continual fast adjustment. 10. 6 mute and mono Mute and mono functions can be controlled independently for source and record signals via the buttons to the left of the two banks of source and record selection buttons. [. . . ] In CD mode the prog key enables specific tracks and their play order to be programmed. To program a play order select a track number from the numeric keypad followed by the prog key until the desired selection is complete. During selection the track number indicated in the player display will be followed by either P or -- or no display. P indicates that the track is already selected, -- indicates that the track can be selected while no display indicates that there is no more memory available. [. . . ]