12
10.1 source inputs and record outputs
The input selector buttons arranged along the uppermost
bank select the source signal to be routed to the power
amplifier and the loudspeakers. Below them, in the lower
bank, are a corresponding array of buttons which select the
signal to be routed to the preamplifier’s record outputs.
These separate source and record sections enable one
source (a CD player, for example) to be listened to whilst
the output from another (say, the tuner) is simultaneously
selected for recording.
Note:
It is possible to lock the
record controls and prevent accidental de-selection during
recording. Record-lock is switched on or off by depressing
the source mono button four times within six seconds.
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.
Input mapping setup is accessed through the NAC 282
program mode. 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.
10.3 automatic input switching
The NAC 282 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 282 and the CD
play
key is operated
on the handset, the NAC 282 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
282 into program mode as previously described. The front
panel
source mono
button will illuminate if automatic
switching is already enabled. If it is not enabled it can be
switched on by pressing the
source mono
button twice.
With auto switching enabled, pressing the
source mono
button will reveal the inputs selected for auto switching by
their button indicators illuminating for a short time. Repeated
operation of the
source mono
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
source mono
button.
The remote handset
mono
(Flash)
or
mon
(Narcom 3)
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.
NAC 282
10 Installation and Operation
The NAC 282 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. A separate NAPSC supply that
provides power to the display and control circuits is also supplied. Diagram 11.3 and
11.4 illustrate a variety of NAC 282 power supply options.
