Marantz SA-7S1 - Manual (Page 26)

21
ENGLISH
OPERATION
USING A MASTER CLOCK
GENERATOR WHEN PLAYING DISCS
The master clock generator
In digital devices such as CD players or super audio CDs,
there is a process that samples or restores the analog signal.
In order to conduct this process, a clock signal (sampling
frequency) is used.
A master clock generator is an oscillation device that makes
this clock signal.
The clock signal output by the crystal oscillator built into this
unit is extremely accurate, enabling you to fully enjoy high
quality sound playback. However, you can also perform
playback using the clock signal output from an external master
clock generator, to enjoy the difference in the sound that the
master clock generator can provide.
In recent years, research has found that the difference in clock
signals causes differences in tone quality. In response to this
finding, many companies have released master clock
generators.
Generally speaking, the more precise the clock signal time
base is, the closer it is to the natural time base of the sound,
thus enabling the reproduction of higher fidelity sound.
Therefore many master clock generators insist that they are
capable of outputting a highly precise clock signal.
Anyway, the different clock seems give differences sound tone.
This unit offers the possibility of enjoying the change.
The frequency of the clock signal that can be input into this
unit is 44.1, 88.2, or 176.4kHz. Use a master clock generator
that is capable of outputting these signals.
7
Using a master clock generator
for playback
Should you elect to use an outboard master clock generator,
be sure to select one that has an extremely accurate clock to
avoid degrading the sonic performance of your SA-7S1.
q , r y t , u
q Switch off the power supply.
w Connect the EXT. CLOCK INPUT connector on the rear of
this unit to the output connector of the master clock
generator using a commercially available BNC terminal
coaxial cable. (See page 11)
e Switch on the power of the master clock generator, and
check the clock frequency to set. For details on this
operation, please refer to the instruction manual that came
with your master clock generator.
r Press the POWER switch on this unit to switch on the power
supply.
t When the unit’s LCD display is on, press the EXT. CLOCK
button on the front of the unit.
y Each time the EXT. CLOCK button is pressed, the clock
frequency indicator lights in the window, in the order shown
below.
OFF (Internal clock operates)
44.1 kHz
88.2 kHz
176.4 kHz
u Press the EXT. CLOCK button to match the frequency with
the clock frequency set in the master clock generator, and
when the LOCK indicator switches on, the settings are
complete.
You will be able to hear the changes in sound quality by
changing the clock signal. Set the frequency to your own
personal tastes.
Caution
•
Switch between the master clock generator and the internal
clock when playback is stopped to prevent excessive sound
occurrence from the speaker.
• Sound will be muted when the LOCK indicator blinks. Check
the settings of your master clock generator, the connections
etc. During this time, the DIGITAL OUTPUT signal will not
be muted.
• The information after this operation is stored by the last
memory function even after the power is switched OFF.
07.6.6, 10:21 AM Page 21