Technics SU-7300 - service, Руководство по эксплуатации

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FRONT PANEL
CONTROLS AND THEIR
FUNCTIONS
1 Power switch
This switch is used to turn the power an and off.
2 Output meter
This meter is installed to report the magnitude of speaker
output. "Left" and "Right" indicate the speakeroutputat the
left side and the right side respectively. The graduations an
the meter are gauged with respect to an 80 speaker system
such that a meter reading of "1" is 1W or a reading of "10"
is 10W. If the impedance of the speaker system is 16 Ohm,
half of the indicated value should be read. For example if
"1" is indicated, it should be read as 0.5W. Likewise if the
indication is "3" it should be read as 1.5W.
In case of 4 Ohm the read-out value corresponds to double
indicated gradation, i.e. the indicated gradation
x -
8 Ohm (Constant) Impedance
(Ohm) of available speaker
• This dB gradation is used for reproducing the frequency
test phono-disc which is needed to check the frequency
response of cartridge and channel response.
3
Tone controls
These controls are used to make adjustments of the tone
quality which may become necessary as a result of speaker
characteristics or listening room characteristics, makig it
possible to adjust the tonal quality to that most agreeable
to the listener's preference.
The bass control is for adjustment of the tone quality of the
low sound range, and the treble control is for the high
sound range.
The characteristics can be changed within a range of +12 dB
to -12 dB for the bass at 50 Hz, and within the same range
for treble at 20 kHz.
The characteristics are "flat" at the "0" position, and are
increased by turning the control to the right from the "0"
position, or decreased by turning it to the left.
4
Balance control
The left and right volume balance is influenced by the dif-
ference, if any, between the efficiency of the left and right
speakers and by the placement of the furniture in the listen-
ing room.
In addition, the left and right volume of some program
sources is not well balanced. If the control is turned further
to the left beyond the "0" position, the right sound becomes
lower. At the left position (at which the control is completely
turned to the left), the right sound cannot be heard at all,
and only the left sound is emitted.
If the control is turned to the right, the left sound becomes
lower and, at the right position (at which it is completely
turned to the right), the left sound cannot be heard at all,
and only the right sound is emitted.
5
Volume control
This control is for adjustment of the volume level.
Turning the control clockwise (maximum position is "10")
increases the volume.
Always set the volume control at "0" before turning an the
set.