Harman Kardon 75+ - Mode Selection and Operation Modes; Bass, Treble, and Mode Switch Usage

STEREO FM
This is the normal listening position for all monophonic or stereophonic
FM broadcasts. In this position the stereo indicator light and automatic switch-
ing circuit built ino your receiver are operative. For further details refer to
paragraph on ‘'SELECTING MONOPHONIC OR FM STEREO BROADCAST”’.
Should you receive a weak stereo signal whose quality has been degraded
by noise or poor signal conditions, and you wish to listen fo this stereo broad-
cast monophonically, switch to the FM position.
FM
In this position you can listen to stereophonic broadcasts monophonically
while monophonic broadcasts will appear unchanged.
DISCRETE FM/AUX
In this position, the addition of an accessory 4-CH decoder will permit the
reception of discrete FM.
This position, when not being used for discrete FM, may be used as an
additional 4-CH/AUX position. As soon as an FM broadcast system has been
selected, Harman/Kardon will be in the position of supplying an appropriate
decoder.
DISCRETE PHONO/AUX
This selects the four discrete phono/aux receptacles on the rear panel for
playback through your system {tape recorder, cartridge player, discrete phono
system) with appropriate decoder.
This quadriphonic system is different than the SQ matrix design and re-
quires a special decoder between your phonograph and Harman/Kardon 75+
receiver. Your phonograph should employ a high compliance, low tip-mass
phono cartridge capable of extending in frequency response to beyond 45,000
Hertz to play back the CD-4 disc. The special decoder should be connected to
the LEFT and RIGHT FRONT/BACK DISCRETE PHONO/AUX receptacles located
on the rear panel of the 75+. (Refer to ‘‘Connecting a Stereo Record Player
with RCA Decoder”’).
Harman/Kardon intends to manufacture a decoder for use with the RCA
discrete system. For additional information on this system and the availability
of the Harman/Kardon discrete phono decoder, write to our Customer Service
Department.
AM
This selects the AM section of your receiver.
BASS & TREBLE CONTROLS
These controls are employed to set the tonal balance of your stereo or
quad system. The Bass control adjusts the low frequencies, either strengthening
or diminishing the intensity of these sounds. The Treble control adjusts the
higher frequencies in the same manner — either strengthening or diminishing
the sound.
In most instances these controls will be set to the ‘‘flat’’ or center position.
If bass or treble adjustment is necessary, do not rotate these controls to their
maximum
settings.
This
may
introduce
distortion
especially
if
your
speakers
cannot
handle
the
power
of
the
boosted
sound.
These
controls
should
be
used
sparingly
and
with
the
knowledge
that
live
music
is
neither
excessively
sharp
or
boomy.
You
may
adjust
both
the
BASS
and
TREBLE
for
front
and
back
pairs
of
speakers
simultaneously
or
individually.
The
inner
knobs
adjust
the
front
speakers
and
the
outer
knobs,
the
back
speakers.
In
order
to
adjust
both
pairs,
turn
either
inner
or
outer
knob.
In
order
to
adjust
front
or
back
only,
hold
one
knob
while
adjusting
the
other.
MODE SWITCH
This
switch
allows
you
to
select
the
proper
mode
of
operation
for
the
various
sources
available.
MONO
In
this
position,
all
program
sources
will
be
reproduced
in
the
monophonic
mode.
lf
an
external
monophonic
source
(one
channel)
is
used
it
MUST
be
con-
nected
to
the
appropriate
LEFT
FRONT
input
receptacles
in
order
to
reproduce
sound
in
all
speakers.
The
1]
mode
indicator
light
will
be
illuminated
indicating
a
monophonic
mode
of
operation.
STEREO
In
this
position,
all
stereophonic
program
sources
will
be
reproduced
in
the
STEREO
mode.
All
pairs
of
speakers
(one
LEFT
and
one
RIGHT)
connected
to
the
FRONT
terminals
will
reproduce
stereo
program
material.
With
the
STEREO/4-CH
REAR
PANEL
SWITCH
in
4-CH
position,
speakers
connected
to
the
BACK
ter-
minals
will
also
reproduce
stereo
in
each
pair.
In
the
STEREO
position,
the
mode
irdicator
light
will
be
illuminated
indicating
a
stereophonic
mode
of
operation.
SQ MATRIX 1/2
These positions may be used to reproduce all SQ program material.
In the SQ MATRIX 1 and SQ MATRIX 2 positions the 2 4] mode
indicator lights will be illuminated.
These lights denote the methods used from the source material to the
recording, to reproduction.
The SQ MATRIX 2 position performs the same function as the SQ
MATRIX 1 position except that it changes the relationship of separation between
the LEFT and RIGHT and FRONT and BACK speakers.
When in this position the separation between LEFT and RIGHT will be
partially reduced from that obtained in the normal SQ MATRIX | position and
the separation between FRONT and BACK will be slightly increased.