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Optimus STA-20 - Using the CD;TAPE Input Jack; Receiver Protection Systems

Optimus STA-20
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6.
When listening at low volume levels,
press [LOUDNESS]. This compen-
sates for the ear's reduced sensitivi-
ty at low volume levels by boosting
the low and high frequencies.
7.
If necessary, adjust the BALANCE
control for the best channel balance.
At the center position, the receiver
delivers
equal
sound
to
both
speakers.
Note: To listen privately using head-
phones with a
+-inch
plug, insert the
plug into the front panel PHONES
jack. When you connect the head-
phones, the external speakers are
automatically muted.
Hearing
Comfort
and Your Health
Do
not listen
at
extremely high volume
levels, especially when using head-
phones. Extended, high-volume lis-
tening can lead to permanent hearing
loss.
USING THE CD/TAPE
INPUT JACK
The CD/TAPE input jack lets you
quickly hook up a portable
CD
(compact
disc) player or cassette deck to your
receiver. You need a shielded audio
cable with a %-inch stereo plug
on both
ends
to
complete
the
connections.
1.
Plug one end of the audio cable into
the headphone output jack of your
portable
CD
player or stereo cassette
deck.
12
2.
Plug the other end of the audio cable
into your receiver's front panel
CD/TAPE input jack.
3.
Set the source selector to the
CD/TAPE position.
OVERLOAD PROTECTION
Your receiver
has
an
overload protec-
tion system. If
your
speaker terminals
receive
an
unusually high power surge,
this system automatically decreases
the output power to a very low level to
protect
your
receiver and speakers.
If this happens, turn off the power
and check
all
speaker connections.
Be sure that there are no stray pieces
of wire touching between the positive
(+)
and negative
(-)
speaker term-
inals. Also check that
your
speakers
have
an
impedance rating of at least
8 ohms.
THERMAL PROTECTION
Your receiver also has a thermal
protection system.
If
the receiver
overheats, it automatically turns off
press [POWER] to the out position,
and
then check to
be
sure the receiver's
ventillation holes are unobstructed.
After the receiver cools (about
15
minutes), press [POWER] in.
Caution: Using speakers with
an
im-
pedance rating
less
than 8 ohms can
cause the receiver to overheat.
CONTROL LOCATIONS
Front
Panel:
Dial-Pointer
Indicator
PHONES TONE LOUDI
POWER
Jack
Control
Buttol
Button
CD/TAPE
Input
jack
BALANCE
Cc
Back Panel:
PHONO INPUT
Jacks
TAPE OUT
Jacks
PHONO GND (grouncl
FMANT
TAPE INPUT
Jacks
(antenna) -
300-ohm
Screw
Terminals
AM ANT
Screw
1
FM
ANT (antenna) - 75-ohm
Sc

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