Tips - VINCENT SA-93 PLUS Instructions For Use Manual

Stereo control amplifier
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The mute function can be activated at the pre-amplifier front panel or using the remote controller buttons.
It cuts off the pre-amplifier output signal and thereby silences loudspeakers and headphones of your
system. The next push at the button will recover the original volume.
Mute speakers
or headphones
The corresponding button activates an output level attenuation of 10dB. This Gain adjustment can only be
made using the corresponding remote controller buttons. This may be of use when the pre-amplifier is com-
bined with a main amplifier of high sensitivity, for example the Vincent SP-991. In everyday use this
button must not be pressed!
Adjust to main amplifiers with
high sensitivity
Burn in / Warm up
Your audio components need a certain time period
until they reach maximum performance. The dura-
tion of this „warm up" time is very different for the
various elements of your audio system. Higher and
homogeneous sound quality is achieved while
keeping the device switched on.
Your audio specialist dealer has enough
experience to give you more information.
Net frequency noise
Some audio source devices may together with the
amplifier cause a humming noise at powerline fre-
quency audible from your speakers. Usually its
volume is variable with the volume setting of the
amplifier.
This is no sign of a defect or fault of your audio
products but has to be eliminated.
Generally, every wall-powered device connected
to the ground wire of the power plug can cause
this problem when connected to the amplifier.
Experience shows that this problem is mainly cau-
sed by antenna-connected components (as TV-sets
Vincent
28
MUTE
GAIN

TIPS

or Tuners), personal computers, electrostatic loud-
speakers, subwoofers, record players or headpho-
ne amplifiers that are connected to the audio
inputs of the amplifier. Another possible reason for
humming noise is electromagnetic interference of
other components' power supplies with pick-up-
systems of record players (change the place of the
record player for a test).
Some main amplifiers are equipped with a
„Ground Lift" switch. If it is activated, ground
potential of the chassis and the protective ground
wire are being separated from the central signal
ground point. The protective ground wire keeps its
function. Sometimes this helps prevent noise cau-
sed by errors in grounding.
If the problem occurs and cannot be solved by
youself your audio specialist dealer will help you
Display
MUTING
Display
GAIN -10DB

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