Bedienungsanleitung Naim NAP 250 DR (Seite 20 von 44) (Englisch)

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E18

SUPERNAIT Integrated Amplifier

19.3 Digital Input Assignment

The default digital input socket assignment illustrated in

Table 19.2 may be changed if desired. Each selection

button may be assigned to any one of the four rear panel

digital input sockets.

Input assignment setup is accessed through the Supernait

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

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

preamplifier mode). Program mode is indicated by a

flashing indicator on the front panel volume control.

Note: If no function is operated within five minutes of

entering program mode the Supernait will return to normal

mode automatically.

Once in program mode, to assign a digital input socket,

first press the required input selection button. Then, press

one of the record selection buttons to assign the desired

digital input. The record selection buttons assign digital

inputs as set out in the following table:

Record Select Button Digital Input Selection

cd (assigns) digital 1 (coaxial)

tuner (assigns) digital 2 (optical)

tape (assigns) digital 3 (coaxial)

av (assigns) digital 4 (optical)

As an example, to assign the tuner input selection button

to digital input 4 proceed as follows.

i) Enter program mode.

ii) Press the tuner input selection button.

iii) Press the av record selection button (which will

illuminate).

iv) Exit program mode.

To return an input selection button to its default analogue

input, repeat the assignment procedure.

For example, to return the tuner input selection button to its

analogue input socket.

i) Enter program mode.

ii) Press the tuner input selection button.

iii) Press the av (illuminated) record selection button (which

will extinguish).

iv) Exit program mode.

19.4 Record Outputs

The selection buttons arranged along the lower bank

select the source signal to be routed to the Supernait’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: Simultaneous and independent listen and record is

not possible with two digital sources.

19.5 Speaker Outputs

A stereo set of speaker connection sockets is provided

on the rear panel. Custom Naim Audio loudspeaker

connectors are supplied to make the connection and in

order to comply with current European safety regulations

these should always be used. Naim Audio speaker cable

will provide the best results; however, a wide range of

speaker cable types can be used without risk of damage

to the amplifier.

Ensure when connecting speakers that they are “in

phase”. That is, the positive and negative connection

orientation at both the speaker and amplifier ends of the

cable is the same for both channels.

19.6 Headphone Output

A 3.5mm headphone socket is provided on the front

panel. Insertion of a headphone plug will automatically

switch on the headphone amplifier and mute the speaker

outputs unless the Supernait is set up not to mute.

To prevent (or re-enable) automatic speaker muting,

enter program mode and press the record aux2 selection

button.

19.7 Auxiliary Inputs and Outputs

A bi-amp out (preamplifier output) DIN socket is provided

on the rear panel to enable an external upgrade power

amplifier or second (bi-amp) power amplifier to be used.

Note: Bi-amp out is the preferred socket for all external

power amplifier connections.

Also provided are separate pre-amp out and power-amp

in sockets. In normal use these sockets are connected by

an external link plug. The link plug should be removed only

if a power supply upgrade is to be used or an alternative

preamplifier is to use the Supernait power amplifier section.

Diagrams 20.3 to 20.5 illustrate use of these sockets.

When an external preamplifier is connected to the

Supernait power-amp in socket, a fault will initially be

indicated by the source mute button flashing. To clear the

fault, press and hold the flashing source mute button. This

will un-mute the power amplifier and turn off the display

and volume and balance indicators.

The Supernait provides an unfiltered analogue stereo

subwoofer output via a pair of RCA Phono sockets.

Note: The subwoofer output is a duplicate of the

preamplifier output. No low-pass filtering is applied.

19.8 Power Supply Upgrades

The Supernait preamplifier section can be upgraded

through the connection of an external Flatcap, Hi-Cap or

Supercap power supply. Diagrams illustrating power supply

upgrades are shown in the following section. The Supernait

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