ページを印刷する█ Line out
This standard XLR connector will provide a balanced line level output signal. It's capable of
driving (very) long leads to mixing consoles, recording equipment, etc. The line out is
surrounded by various controls for maximum flexibility.
● pre/post
before (pre) or after (post) the EQ.
● level : adjust the output level by +/- 9dB
● phase
: change the phase of the output signal by 180 degrees*.
● ground lift
any ground loop issues.
Note: There are a few examples
why changing the phase of the
line out signal might be
necessary. Bad wiring, specific
distances from the FOH
speakers when using a speaker
cab too, or wrong settings within
a mixing console to name a few. These issues will result in a phase shift, recognizable by a
vague tone or complete signal loss. Flipping the phase button will usually resolve the issue.
█ Footswitch
All three functions of the buttons found on the front panel (mute, fx loop and EQ) can be
controlled externally by the optional footswitch. For convenience and the ability to use a
widely available type of cable, a RJ45 connector is used. The control is fully parallel. If you
prefer to build your own footswitch, or integrate these functionalities into a larger control
system, the pinning is available in appendix A below or on http://debontamps.com/manuals/
█ Main outputs
The Vidur preamp comes with three output connectors.
● Jack output, (un)balanced : A 6.3mm (1/4") standard jack connector. Can be used
unbalanced (TS) or balanced (TRS). Using the jack output will mute the XLR outputs.
● XLR outputs, balanced (2x): These
standard XLR connectors are wired in
parallel. Since most solid state power
amplifiers come as two channel, two input
devices, the second XLR is there simply
for convenience.
: sets the point where the signal is tapped from inside the preamp;
: (dis)connect pin 1 from the XLR connector. This will effectively cure
deBont Amps Vidur Tube Preamplifier Owner's Manual
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