Hafler 945 manual Mute Control, Volume, Balance Control Mono, AM/FM Selector, 1AM/FM Tuner Section

MUTE CONTROL

VOLUME CONTROL AND

VOLUME

CONTROL INDICATOR

BALANCE

CONTROL

MONO

CONTROL

HEADPHONE OUTPUT

AM/FM

SELECTOR

Activating the Tone Controls may cause a slight change in tonal balance even when both Bass and

Treble		controls are in their center detented					position,	and	therefore	the Tone System should be disabled
via	the	switch	when no	tone	control	action	is desired. The tone			controls also	limit the total bandpass
of	the	line amplifier.
The Mute control is for				turning	off the	Line	outputs,	useful	when it	is desired to	temporarily interrupt the
signal		to the	amplifier.

The Mute mode is active when the Volume Control Indicator is flashing green. The Mute mode is accessible only from the Remote Control. Pressing either Volume button on the Remote Control will automatically de-activate the MUTE mode.

This

motor

driven Volume Control affects the level

of

signal

present

at the

Line Output and

Headphone

jacks.

This

control may

be rotated by

hand at the

front

panel, or

via the

Up/Down Volume

buttons on

the Remote

Control.

The Volume Control Indicator will flash green either

during

the

muting

delay period when the unit is first

turned

on,

or

when the

MUTE mode

is activated

via

the

Remote

Control.

This front panel control alters the proportion between right and left output volumes. In the full counterclockwise position, only the left channel will be heard. In the full clockwise position, only the right channel will be heard. The Balance Control is useful for balancing the acoustic output of the system between left and right speakers, as well as being useful for system troubleshooting.

The Balance Control is not available from the Remote Control.

The

Mono button converts stereo sources

to

monophonic,

or

can

be

used

to

feed

a

monophonic

input

from one

channel

into

both

channels.

The Mono

mode

is

active

when

the

button

is

lighted

green.

~

For

more

features

of

the

Mono

Control,

see

the

AM/FM

Tuner

Section.

The

Mono

Control is

not

available

i

from the Remote Control.

~

The

Headphone

receptacle

is

a standard

1/4” stereo

phone

jack,

with

the

tip

of

the

plug

as

the left

channel,

the ring

the

right channel, and the barrel ground.

~

The

headphone

driver

circuit

is

separate

from

the

main

line

amplifier to

provide

the

extra

power

for

driving

~

headphone

loads.

Inserting

a

plug

into

the

Headphone

receptacle

will

automatically

turn

off

the

Line

Output.

Remember

to reduce the

Volume

Control

setting before unplugging the headphones, since

a

normal

listening

level

for

headphones

may

correspond to

a

surprisingly

high

volume for

loudspeakers.

1AM/FM TUNER SECTION

The

Tuner

Section

of

the

945

Preamp/Tuner

has

been

configured

to

match

the

broadcast

requirements

of

the

intended

country

of

destination.

For

North

America

and

some

other

areas,

channel

spacing

will

be

set to increment at 100 kHz

intervals

for FM, and 10 kHz intervals for

AM. For

Europe and

some

other

areas,

channel

spacing

will

be set to

increment at

50

kHz

intervals

for

FM,

and

9

kHz

for

AM.

Similarly,

the de-emphasis curves are matched to the specific areas.

The

AM/FM

Selector

controls

whether

the

tuner

will

be

operated

in

the

AM

or

FM

band.

The

status

of

the

tuner’s

operation

will be indicated in the

display

window

with

the

logo

“AM”

or “FM”. Note that this

control is really needed only

when manually tuning or storing

presets.

The

Preset

buttons

(described

below)

will

automatically

switch

between

AM

and

FM

according

to

the

station

stored

in

memory.

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