Bedienungsanleitung Naim NAC 552 (Seite 12 von 24) (Englisch)

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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).

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