Sansui SR-929 - Page 8

How te avoid howling
Your turntable should be placed as far from your speaker systems as
possible, so that sound vibration does not effect stylus movement.
Acoustic
feedback
or
“howling,”
caused
when
the
sound
emanating
from the speaker systems vibrates the floor and air, will indirectly.
vibrate the stylus tip. Such vibration is amplified by the amplifier and
reproduced through the speakers infinitely. The result is an oscillating
boom audible when a record is played.
Should you experience howling, place the turntable still farther away
from the speakers, use separate bases for the turntable and the speakers,
erect an acoustic shield between speakers and the turntable, and/or
reduce the volume level.
Induced hum
Any nearby motor-equipped apparatus such as an electric sewing
machine or fan, or a large power transformer may influence your
turntable and cause booming hum. If you experience this, move the
apparatus in question as far as possible from the turntable. When placing
the turntable next to your amplifier, hum will be reduced if you avoid
the side of the amplifier where its transformer is located.
Power voltage
Your turntable is adjusted in our factory to operate on the power
voltage of the area where you purchased it. Therefore, should you move
to an area where the voltage is different from the factory-adjusted one,
you have to make the voltage changeover. Make the changeover
referring to the attached voltage/frequency changeover sheet.
lf, however, the area where you bought your turntable is one where
users are prohibited from making such changeover, changeover is not
possible. In other areas, consult with your nearest electric appliance
dealer about the specific voltage adjustor you need.