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E10
NAC 282, NAC 202 & NAC 152 XS
10.6 Auxiliary Power Outputs
The NAC 282, NAC 202 and NAC 152 XS Aux 2 input is
provided with primary and alternative DIN sockets. The
alternative socket, fitted at manufacture with a removable
cover, is intended for use with a Naim Audio StageLine or
SuperLine phono stage and incorporates an appropriate DC
power supply. The primary and alternative sockets must not be
used simultaneously.
10.7 Power Supply Upgrades
The NAC 282, NAC 202 and NAC 152 XS can each be powered
by a Naim power amplifier incorporating a preamplifier power
supply. Alternatively however their performance can be
significantly upgraded through the use of one or more external
power supplies. Power supply upgrades can be carried out
in stages. Table 10.7.1 below describes some power supply
upgrade options for each preamplifier. In addition to those
described in the table a variety of different power supply
upgrade schemes are possible. Your local Naim representative
will be able to advise on the best scheme for your particular
system.
10.4 NAC 152 XS Source Inputs
The NAC 152 XS input selection buttons select the source input
signal to be routed to the preamplifier outputs and the power
amplifier.
The NAC 152 XS has six DIN input sockets and five pairs of
RCA Phono sockets. The RCA Phono sockets are permanently
connected in parallel with their respective DIN sockets. RCA
Phono and DIN sockets for the same input should not be
connected simultaneously.
A 3.5mm stereo Jack input socket suitable for a variety of
portable music players is also provided on the NAC 152 XS front
panel. This input is connected in parallel with the aux 1 DIN
and RCA Phono sockets. Insertion of a plug into the front panel
socket will automatically switch the preamplifier to that input.
Removal of the plug will return the amplifier to the previously
selected input. If a different input is selected while a plug is
inserted, removal of the plug will not cause the input to change.
10.5 Signal Outputs
10.5.1 Preamplifier Outputs
The NAC 282, NAC 202 and NAC 152 XS each provide two
primary preamplifier output options:
• IfthepreamplifieristobeusedwithaNaimpoweramplifier
that provides a preamplifier power supply the Standard DIN
output socket should be used.
• Ifthepreamplifieristobeusedwithaseparateexternal
power supply, in order to ensure correct continuity of
system earth connections, the signal output is routed via
the power supply. In this case, depending on the specific
power supply model to be used, either one or both of the
preamplifier link and blanking plugs should be removed and
the power supply connected to the Link and Upgrade DIN
sockets.
The power supply is fitted with multiple DIN signal output
sockets that enable the downstream connection of a stereo
power amplifier, a dual mono power amplifier or two
separate mono power amplifiers.
Diagrams 12.1 to 12.5 illustrate a variety of external power
supply connection schemes.
10.5.2 NAC 152 XS Line and Subwoofer Outputs
In addition to its DIN socket preamplifier outputs, the NAC 152
XS provides subwoofer and line level outputs, each via a pair of
RCA Phono sockets.
The line level output simply reflects the selected input
signal while the subwoofer output is a duplicate of the main
preamplifier output (i.e. it is affected by the preamplifier
volume control).
12


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