Power Control - VINCENT SP-998 Instructions For Use Manual

CONNECTIONS FOR THE STANDBY CONTROL
Many AV-Systems consist of a multitude of individual components. To avoid the necessity of switching them on
and off before and after every use, many manufacturers have equipped their devices with what is known as
"POWER CONTROL" circuit or "TRIGGER". This kind of remote-controlled standby circuit is used primarily for
preamplifier and main amplifiers, as power amplifiers are often placed far from other devices near the spea-
kers. To employ these functions, direct or indirect cable connections must be made between the preamplifier
(or integrated amplifier) and all the devices which support this function. The "POWER CONTROL" function
operates in such a way that each switching on or off of one device in the system (usually the preamplifier) auto-
matically brings about the switching on or off of all the connected devices which support this function. Please
keep in mind that all devices which respond to the power control are not disconnected from the mains network
when switched off. They are set to a standby state instead. For connecting cables, two-core cables with 3.5
mm jack plugs (mono) are used. For each connection between two devices one of those cables is needed.
If the SP-998 main amplifier is to be switched on/off automatically with the preamplifier, then the cable con-
nections for power control described below must be made correctly and the "POWER" switch (1) must be
moved to the switched off position. If you don't wish to use this function or if the other components do not sup-
port it, all you have to do is leave out these cable connections.
The SP-998 is equipped with two connectors for the power control. One output on the transmitting device (inte-
grated amplifier, preamplifier or a device that passes on the power control signal), usually labelled "POWER
CONTROL" or "TRIGGER", must be connected to one of these two connectors. If the "POWER CONTROL"
cable is connected to this device, the second jack connector serves to pass on the switch signal (for example
to the main amplifier of the other channel) or it remains free. This main amplifier cannot generate the switching
signal for other components on its own!
preamplifier
In theory it is possible to provide an infinite number of HiFi com-
ponents with the power control signal. For this purpose, on most
devices one of the two "POWER CONTROL" connectors may be
used as a signal input and the other as a signal output. This
approach, to loop a signal through a chain of components, is
commonly referred to as "daisy chaining".
Attention:
Many devices which can be controlled by a switching
signal (not preamplifiers or integrated amplifiers),
have two terminals which do not differentiate between
input and output. In this case either of the two can be
selected. Even some devices that transmit the switch
signal (preamplifiers and integrated preamplifiers)
lack this marking. In this case it may be assumed that
they both are signal outputs.

(POWER CONTROL)

power control cable
"POWER CONTROL" sockets of preamplifiers or integrated
amplifiers must not be interconnected! All receiving devices
must not be connected to more than one preamplifier or inte-
grated amplifier (directly or indirectly)!
If a "POWER CONTROL" cable is connected to the back of
the main amplifier and the 12V switching signal is given, the
main amplifier can no longer be switched off with the
"POWER" button. If the power control function is not desired,
the switch signal cable must therefore be removed!
SP-998 e.g. 2. SP-998
Vincent
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