26
RQT5744
Reference
Convenient functions
Remote control only
Press [MUTING].
Volume is reduced to minimum.
To cancel
Press [MUTING] again. (“MUTING OFF” lights up.)
To cancel from the unit, turn [VOLUME] to minimum (- - dB), then
raise it to the required level.
Muting is also canceled when the unit is turned off.
Muting the volume
C
The level can be adjusted between –6 to +6.
1 Press [VGCA] to turn the VGCA off.
2 Press [BASS (e or r)] (bass) or
[TREBLE (e or r)] (treble).
You cannot adjust the tone while VGCA on.
Note
To adjust the tone quality
B
VGCA: Variable Gain Control Amplifier
You can achieve a clearer sound by using this feature.
Turning the VGCA on and off
Press [VGCA].
How this unit’s VGCA works
Generally, the rate of noise (N) to sound (S) worsens as you lower
the volume on an amplifier. With this unit, however, the VGCA
circuit changes the gain between 0 and –6 dB, thereby maintaining
the same S/N ratio. This change in gain is then maintained as you
continue to lower the volume, allowing you to enjoy a better S/N
ratio than if the feature was off.
q Structure of the amplifier
a Input
b Electronic volume control
c Variable gain control amplifier
d Power amplifier
w Changes to the S/N ratio when the volume is lowered
(simplified)
e Gain variation range
f Difference between the S/N ratio when the feature is on and off
g Reduction in volume
The VGCA circuit
A
Maintenance
If the surfaces are dirty
To clean this unit, wipe with a soft, dry cloth.
If the surfaces are extremely dirty, use a soft cloth dipped in a soap-
and-water solution or a weak detergent solution.
¡Never use alcohol, paint thinner or benzine to clean this unit.
¡Before using chemically impregnated cloth, read the instructions
that came with the cloth carefully.
For a cleaner crisper sound
Clean the heads regularly to assure good quality playback and
recording. Use a cleaning tape (not included).
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