User manual NAIM NAC 122X

[. . . ] 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. 4 radio Interference In some circumstances, depending on where you live and the earthing arrangements in your home, you may experience radio frequency interference. [. . . ] Direct contact to Naim for service or update information should be made initially through Customer Services: Tel: Email: +44 (0)1722 426600 info@naim-uk. com Please quote the product serial number (found on its rear panel) in all correspondence. N A C 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. 3. 1 Input s o c k e t s The input selector buttons select the source input signal to be routed to the preamplifier outputs and the power amplifier. 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 parallel with their DIN sockets. RCA Phono and DIN sockets for the same input should not be connected simultaneously. Once in program mode, the front panel mon button will illuminate if automatic switching is already enabled. If it is not enabled it can be switched on by pressing the front panel mon button twice. With auto switching enabled, pressing the front panel mon 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. 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. 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. 2 s ubw o o f e r ou t p u t 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. 3. 3 a uto m a t i c I n p u t sw i t c h i n g 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 handset, 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. [. . . ] The mute button indicator will be illuminated when record mute is engaged and extinguished when record mute is disengaged. 3. 12 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. 4 naC 122x Control and Con n e c t i o n 4. 1 naC 1 2 2 x F r o n t volume mon mute source selection N A C 122x 4. 2 naC 1 2 2 x re a r signal ground power supply upgrade link plug fitted to power amplifier with internal power supply RC5 in RC5 out to power amplifier with internal power supply subwoofer RCA Phonos out 1cd 2 tun in in 3 tape 4 AV 5 aux 1 6 aux in/out in/out in/out 2 in 6 aux 2 in & power out cd RCA Phonos in aux 2 RCA Phonos in RS232 interface Inputs 1, 2 & 6 ch1 ch2 -ve nc nc Inputs 3, 4 & 5 ch1 ch2 -ve ch1 (out) ch2 (out) Input 6 (alternative) +ve ch2 -ve +ve ch1 note: The NAC 122x AUX 2 input is provided with two sockets. The right hand socket (fitted on delivery with a blanking cover), is intended for use with a Stageline or Prefix RCA Phono stage and incorporates an appropriate DC power supply. [. . . ]