OTHER CONTROLS
By far the most frequently used
controls are the FUNCTION, VOLUME,
and POWER controls, but each of the
controls we haven't yet mentioned has a
specific purpose and value. Listen
to their effect as we describe them.
TREBLE Raises (clockwise)
or
lowers
(counterclockwise) high frequency
content in program material on both
channels simultaneously. Neutral
position is 12 o'clock.
BASS Same effect as TREBLE control,
except works on low frequencies.
CONTOUR Works
in
conjunction with
VOLUME control to increase bass
energy at low volume settings.
Progressively less effect
as
volume level
is
increased. The CONTOUR control
has no effect at VOLUME control settings
beyond 12 o'clock.
TAPE MONITOR Admits program from
any
"high
level"
source (usually tape
recorder) connected to TAPE MONI-
TOR receptacles. It does not affect signal
appearing at the TAPE OUTPUT
receptacles. Thus, the use of the TAPE
MONITOR switch does not disturb
the recording process of whatever
source the FUNCTION switch is set to.
(Note:
If
the rear panel TAPE MONITOR
inputs are unoccupied and the TAPE
MONITOR switch
is
depressed, no
sound will be heard regardless of the
position of the FUNCTION switch.
The same will be true if the equipment
connected to the TAPE MONITOR inputs
is off). TAPE MONITOR also allows for
connection of signal processing devices.
MONO Changes any program from
st8reophonic to monophonic format.
Also processes any source connected to
a single input receptacle (such as
television sound) through both channels.
HI CUT A filter to reduce high frequency
content of any program material. Tape
hiss, record scratches and other
problems found
in
program material
can be effectively reduced with this
control.
LO
CUT A filter to reduce low frequency
content of any program material.
Rumble from your turntable (if present)
or
other low frequency problems
can be effectively reduced with this
control.
PHONES Receptacle for headphones
for private listening. Does not auto-
matically defeat speaker systems.
Headphones can
be
used whether your
speakers are
"on"
or
"off".
FUNCTION Selects program for play-
back through system. Same signal
appears at TAPE OUT.
FUSES
r
SPEAKER
FUSE.S···•·
.•.
·.7··.•••.
•.•
LEFT
RIGHT
••
•
3A3AG
3A3AG
••
•
Three fuses are provided to protect
the 430. Two of these are the speaker
fuses and are labeled
as
such. They
work to protect the amplifier circuitry
from external short circuits or other
conditions which would cause excessive
current to be drawn through the
amplifiers.
If
one of your speakers
stops reproducing sound, first check the
connections for that speaker, then
check the speaker fuse for that channel.
Replace the fuse after correcting any
short circuit conditions (wire strands
touching the wrong terminals are the
usual cause).
The remaining fuse protects the entire
receiver from excessive currents
through the AC power line. Should this
fuse blow:
THE REPLACEMENT FUSES MUST
BE
OF PRECISELY THE SAME TYPE
AS
THAT SPECIFIED ON THE REAR
PANEL. USING ANY OTHER FUSES
WILL NOT PROTECT THE 430:
SERIOUS DAMAGE
TO
ITS CIRCUITRY
MAY RESULT.
CLEANING THE DIAL GLASS
Dust or smudges can be removed
from the dial glass with a diluted liquid
glass cleaner and a soft cloth or damp
paper towel.
DO
NOT use a strong
solvent-type cleaner or ammonia as
these may remove the lettering on the
face panel or cloud the dial glass.
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