Bedienungsanleitung Naim NAC 252 (Seite 11 von 24) (Englisch)

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NAC 282, NAC 202 & NAC 152 XS

10 NAC 282, NAC 202 and NAC 152 XS

Introduction and Installation

The NAC 282, NAC 202 and NAC 152 XS preamplifiers do 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. The NAC 282 is

however supplied with a NAPSC power supply that provides power to its display and control

circuits. Diagrams 12.1 to 12.5 illustrate a variety of power supply connections and options.

The preamplifier and power supply, which may be a Naim power amplifier, should be installed

on a dedicated equipment stand intended for the purpose. Do not stand either directly on top

of another item of equipment. Care should be taken to ensure that the equipment stand is

level.

The preamplifier and power supply should be installed in their final locations before

connecting cables or switching on. Ensure that the preamplifier volume is turned down before

switching on.

The following paragraphs describe installation features and functions specific to the NAC 282,

NAC 202 and NAC 152 XS. Operational features common to all preamplifiers are described in

Section 14.

10.1 NAC 282

Source Inputs and Record Outputs

The NAC 282 provides both input and record output selection

buttons arranged in two banks on its front panel.

The input selection buttons are arranged along the upper bank

and 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 NAC 282 record outputs.

These separate source and record sections enable one source

(a CD player, for example) to be heard 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 pressing the source mon button four times

within six seconds.

10.2 NAC 282 and NAC 202

Input Socket Assignment

The input selection buttons select the source input signal to be

routed to the power amplifier and the loudspeakers.

The NAC 282 and NAC 202 have six DIN input sockets and

two alternative pairs of RCA Phono sockets. The RCA Phono

sockets can be assigned individually to the cd and aux 2 input

buttons in place of the DIN sockets.

Input assignment setup is accessed through preamplifier

program mode. To switch into (or exit from) program mode

press and hold the prog key on the remote handset (with the

handset in preamplifier mode). Program mode is indicated by a

flashing indicator on the front panel volume control and, on the

NAC 282, the record selection button indicators extinguishing.

Note: If no function is operated within five minutes of entering

program mode the preamplifier will return to normal mode

automatically.

Once in program mode press and hold the remote handset

1 key to select or de-select the RCA Phono socket input for

cd, and the remote handset 6 key to select or de-select the

RCA Phono socket input for aux 2. The corresponding front

panel input buttons can similarly be used to select or de-select

the RCA Phono socket inputs. The appropriate input button

indicator will flash three times on selection of the RCA Phono

option and once on selection of the DIN option.

To exit from program mode press and hold the prog key on the

handset until the record select indicators are restored and the

volume indicator stops flashing.

10.3 NAC 282 and NAC 202 Record Mute

At times when the NAC 282 or NAC 202 record outputs are not

required it is good practice to mute them in order to minimise

power consumption and maximise sound quality.

10.3.1 NAC 282 Record Mute

To engage the NAC 282 record mute simply press the record

(lower) bank front panel mute button.

10.3.2 NAC 202 Record Mute

To engage or disengage the NAC 202 record mute press the

front panel mon button followed by the front panel mute

button. The mute button indicator will illuminate when record

mute is engaged and extinguish when it is disengaged. Record

mute can also be engaged and disengaged from the remote

handset using the mon and mute keys.

Operational features

common to all

preamplifiers are

described in Section 14

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