Table of Contents
Advertisement
SIMPLE MAINTENANCE HINTS /ACCESSORY LIST
Rear-Panel AC Outlets
Of the three AC outlets provided on the rear panel,
the ones marked 'SWITCHED?'
are controlled by
the front-panel Power/Speakers Switch.
The third
one, marked 'UNSWITCHED,' is always 'live' and
independent of the Power/Speakers Switch.
The
voltage delivered at these AC outlets is the same as
the power supply voltage used.
The two 'SWITCHED'
outlets have a total power
capacity of 100 VA, while the UNSWITCHED one
150VA. Before you connect any appliance to them,
be sure that it is adjusted for use at the same power
supply voltage, and that its power consumption is
not beyond these figures. Otherwise, serious danger
could result.
Make Proper Connections
Connect the loadwires of speaker cables properly.
If they are loose or touch other parts, the amplifier
may
produce
noise and eventually break down.
Also, before connecting a turntable, tuner and/or
tape deck, be sure to read their manufacturers'
instructions.
({7//LLA
CCC
WS SANS
PIN JACK
a
it
~ i
SEWER
=
ye
:
CUT OFF EXCESS
a.
aN
Speaker Impedance
Do not ever connect two pairs of speaker systems
with impedance of less than 8 ohms each.
Doing
so will reduce the composite speaker impedance in
each channel to less than 4 ohms, and may cause
the quick-acting fuses to blow or result in a more
serious breakdowns over a long period of time.
Phasing of Speakers
Listen to any monophonic reproduction. If the speak-
er systems are correctly phased, the sound will seem
to come from a point midway between the left and
right speaker systems.
If the sound is not directly
in front of you, however, the speaker systems are
out of phase.
If you notice this condition, check the
speaker connections once.
To correct the condition,
switch the amplifier off and reverse the connection
of plus and minus leadwires of one speaker cable.
Also, be careful not to connect a single speaker
system between the SYSTEM-A
and SYSTEM-B
terminals by mistake.
Howling and Hum
Take care never to place a turntable on or too near
a speaker system, or the vibration produced by the
speaker system is transmitted and causes an oscillat-
ing phenomenon called howling.
It is best to keep
these components completely separated, but if this
is impossible, place a thick cushion between them.
Humming, in contrast, is a phenomenon caused by
incomplete or incorrect turntable-amplifier connect-
tions.
Should this occcur, check to see if all con-
nections are completely made and if the connecting
cables are sufficiently thick.
Hum noise may some-
times be eliminated by connecting
the grounding
lead of the turntable to the GND terminal on the
amplifier's rear.
Advertisement
Table of Contents
