NAIM Amplifiers, Owner'S Manual

Page: 9 / 40

7
NAC 252
8.6 Mute and Mono
Mute and mono functions can be controlled independently for
source and record signals via the front panel buttons to the left
of the two banks of source and record selection buttons. Mute
silences the output signal, while mono sums the left and right
channels.
8.7 Display
The NAC 252 front panel button display 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.
8.8 Switch-on
After switch-on, via the Supercap front panel
power
button,
the NAC 252 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.
Note:
A flashing mute indicator after switch-on indicates that the
preamplfier power supply or link plugs are incorrectly connected.
8.9 Remote Control
The NARCOM remote handset supplied with the NAC 252
duplicates all configuration and control functions. See Section
24 for more information. The
Flash and iCom handset will
also control the NAC 252. See Sections 23 and 25 for more
information.
8.10 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.
Preamplifier
9.1 NAC 252 Front
volume balance mute mono
source
bank
record
bank
source and record
selection