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ENGLISH
2
PRECAUTIONS
1. GENERAL
BE SURE
TO USE THE
CORRECT
A.C. POWER
SOURCE
The A.C. power requirement is marked on the rear
panel of this unit. Connection to any other power
source may cause damage to this unit and/or severe
electrical shock.
DO
NOT
PLUG
IN OR
UNPLUG
THE
POWER
CORD WITH WET HANDS
There is a great danger of severe electrical shock if
the power cord is plugged in or unplugged with wet
hands. Do not attempt to unplug the cord from an
A.C. outlet by pulling the cord.
Firmly grasp the
plug to remove it from the A.C. outlet.
DO NOT ALLOW WATER
OR ANY FOREIGN
MATTER TO GET INSIDE THIS UNIT
Should water or a metallic object
accidentally fall
into this unit,
immediately disconnect the power
cord and consult your authorized service dealer.
HANDLE THE POWER
CORD WITH CARE
Do not bend sharply or twist the power cord. If the
insulation becomes damaged, the conductor breaks,
or poor contacts occur, request service from your
authorized service dealer. Continued use under these
conditions, may 'cause fire or electrical shock.
DO NOT TOUCH THE INSIDE OF THIS UNIT
There are high voltages inside this unit. Never re-
move the top or bottom cover. All inspections and
repair including fuse
replacement,
should
carried
out by your authorized service dealer.
DISCONNECT
THE
POWER
CORD
AT
THE
FIRST SIGN OF TROUBLE
At the first sign of unusual noise, odor, or malfunc-
tion, disconnect the power cord and consult your |
authorized service dealer. Continued use under these
conditions, may increase damage or cause additional
problems.
THIS PRODUCT !S DESIGNED AND WARRANT-
ED
FOR
CONSUMER
HI-FI
USE
ONLY.
NOT
INTENDED
FOR INDUSTRIAL OR PRO-AUDIO
APPLICATIONS,
2. LOCATION
BE SURE TO PLACE IT HORIZONTALLY
Care must be taken to avoid inclining or standing
this preamplifier upright, since such conditions can
result in improper
heat dissipation.
Do not cover
this ventilation holes by placing another unit on top"
of this
preamplifier
or otherwise
obstruct
their
operation
by improper
location
or with any other
object.
AVOID
PLACEMENT
IN DIRECT 'SUNLIGHT,
NEAR AIR CONDITIONER ETC.
This unit can become unstable if operated in ex-
_ tremely high or low temperatures.
Place it in a well
ventilated area for proper heat dissipation. Avoid
placement
in direct sunlight, near air conditioners,
poorly ventilated areas or in areas of excess humidi-
ty_or dust. Do not block the ventilation holes,
3. CONNECTIONS
BE SURE
TO TURN
OFF THE POWER
BEFORE
MAKING CONNECTIONS
This is to prevent damage to the speakers from the
popping noise which occurs when plugging and un-
plugging cords.
'USE
EXTREME
CARE
IN MAKING
THE
COR-
.
RECT CONNECTIONS
If you reverse the R (right) and L (left) leads, you
will reverse the stereo location of R and L channels.
MAKE CONNECTIONS SECURELY
If any of the plugs should become loose or discon-
nected, a hum may develop. !f this is not.corrected,
deterioration of sound quality and possible damage
to the speakers may result.
USE ONLY SHIELDED CORD FOR THE LEADS
Use only shielded cords for interconnecting com-
—
ponents. Do not use cords longer than 2 m (6'). Ex-
cessive lead lengths can deteriorate high frequeney
response
and are subject to interference that can
result in hum or noise.
WHEN
NOT
USING THE PHONO
INPUTS, KEEP
THE
SHORTING
PLUGS
INSERTED
IN
THE
INPUTS
This is to prevent hum and noise and to prevent the
popping noise which can occur when switching the
program
selector switch
without
a turntable con-
nected.
WHEN
USING
THE
COMPANION
POWER
AMP-
LIFIER (DA-A30) AND SWITCHING
TWO PAIRS
OF
SPEAKERS
FROM
THIS
UNIT,
ENSURE
THAT
THE
COMBINED
IMPEDANCE
(BOTH
PAIRS OF SPEAKERS
OPERATING)
IS 4 OHMS
OR ABOVE
If the combined
impedance
is below 4 ohms, the
load
impedance
detector
circuit may operate and
mute the power amplifier output.
The combined
impedance
is determined
with the
following formula.
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