User Guide

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NAIT 5i

20 Installation and Operation

The NAIT 5i Integrated Amplifier should be installed on a dedicated equipment stand

intended for the purpose. Care should be taken to ensure that it is level. The NAIT

5i can be operated from its internal power supply only. No power supply upgrade is

possible.

20.1 Inputs

The front panel input selector buttons select the source input

signal to be routed to the power amplifier and the loudspeakers.

The four buttons are labelled cd, tuner, tape and av. Each input

button corresponds to a pair of rear panel RCA Phono input

sockets. The cd and tuner inputs are additionally provided with

alternative DIN sockets. These should be used in preference to

the RCA Phono sockets if practical. Do not connect both the DIN

and RCA Phono sockets of one input simultaneously.

20.2 Automatic Input Switching (Program Mode)

The NAIT 5i incorporates an optional automatic input switching

feature which can select the appropriate input as soon as any

handset function for a particular Naim source component is

operated. For example, if the tuner input is selected on the

NAIT 5i and the cdplay key is operated on the handset, the NAIT

5i will automatically switch to the cd input. Automatic input

switching can be set up to operate on any combination of the

cd, tuner and av inputs.

To enable automatic input switching, first switch the NAIT 5i into

program mode by pressing and holding either the

prog

key on

the remote handset (handset in preamplifier mode) or the

button on the amplifier front panel. Program Mode is indicated

by a flashing indicator on the front panel volume control. If no

function is operated within five minutes of entering program

mode the NAIT 5i will return to normal mode automatically.

The front panel tape button will illuminate if automatic input

switching is already enabled. If it is not enabled it can be

activated by pressing the handset

key or front panel

tape

button twice.

With automatic input switching enabled, pressing the

key or

the

tape

button will reveal the inputs selected for automatic

input switching by their button indicators illuminating for a

short time. Repeated operation of the

key or

tape

button will

sequentially select through each possible combination of cd,

tuner, and av inputs, and automatic input switching disabled (cd,

tuner and av indicators off). When the desired inputs selected

for automatic input switching are indicated, stop pressing the

key or button.

To disable automatic input switching, press the

key or

tape

button repeatedly until no other buttons are illuminated.

Automatic input switching only becomes operational or is

cancelled on exiting from program mode by pressing and holding

the handset

prog

key or front panel

button.

20.3 AV Integration (Unity Gain)

The Unity Gain function enables an audio-visual processor to be

integrated with the NAIT 5i such that its volume control takes

over command of signals connected the amplifier’s AV input.

To select unity gain, first switch the NAIT 5i into program

mode as described in Paragraph 20.2. The AV input button will

illuminate if unity gain is already enabled. If it is not enabled

it can be activated by pressing the handset

key or the front

panel

button. Deselect unity gain by again pressing the

key or the

button. Unity gain only becomes operational or is

cancelled on exiting from program mode by pressing and holding

the handset

prog

key or front panel

button.

Note:

The unity gain feature must be used with care. It effectively

by-passes the NAIT 5i volume control leaving any signal connected

to the unity gain input to be passed to the power amplifier and

speakers at full volume. Additionally, if an input is selected which

has unity gain enabled, the volume handset functions will be

disabled and their indicators will turn off. This will be flagged by the

volume indicator flashing if its handset keys are used.

20.4 Restoring Defaults

The programmable functions can be restored to their default,

(inactive) states by pressing and holding the front panel

tuner

button or the handset

disp

key (handset in preamplifier

mode) while the NAIT 5i is in program mode.

20.5 Outputs

A stereo set of speaker connection sockets are provided on the

rear panel. The sockets can accept standard 4mm plugs, but to

comply with European legislation the Naim connectors supplied

should 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

speakers.

The tape output always carries the selected input signal. No

“record monitor” function is available.

20.6 Volume and Mute Control

The remote handset

vol

keys provides some alternative control

characteristics. A quick key press and release will adjust the

volume incrementally. A quick key press and release followed by

press and hold will provide continual slow adjustment. Simple

press and hold will provide continual fast adjustment.

Mute control is available from the remote handset only. Mute is

indicated by the amplifier volume control indicator flashing.

Note:

The NAIT 5i does not incorporate any facility for channel

balance adjustment.