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Several years
ago I was using a preamp that allowed me to set the channel balance by nulling
the right and left channels together while using the balance control. This
perfectly adjusted channel balance not only improved the imaging but also seemed
to bring the overall sound into a much sharper focus and clarity. The system
seemed to have a much clearer, more open sound. But as soon as I changed the
volume, even slightly, I lost that perfect focus and balance because the volume
control could not track evenly. So every time I changed the volume, I would have
to re-balance the system. I purchased several "high end" pots and
installed them in the preamp, but the nulling feature in the preamp showed me
that no matter how costly the pot, it would never come close to keeping the right
and left channels perfectly balanced at every volume setting.
The next step
was to build a stepped attenuator with hard wired resistors. Although this solved
the tracking errors of the volume control, it was cumbersome to use and I found
that when I wanted to set the volume, the next higher setting was often too loud
while the one below it was too soft. What was needed was a stepped attenuator
with many more than the usual 32 steps. But a switch with that many separate
steps was not available. That led to the development of the 125 step attenuator
that is used in all Placette Audio preamps and volume
controls.
This
incredible attenuator has 125 steps of volume control. It tracks so accurately
that the output from both channels is always perfectly balanced at each and every
volume setting. It's easy to use and the IR Remote Control was added as a
standard feature.
Building
these controls using only the very costly Vishay S102
resistors was the final touch that allowed these volume controls to
perform with an almost startling clarity. It has to be heard to be believed.
Nothing else even comes close. Unless you have heard your system with a Vishay
resistor volume control, you have not even come close to hearing the full
potential of that system.
An easy way
to confirm this is to listen to any source with it's own volume control and play
it directly into your power amp. Then, play the same source again but use it's
line output
and control the volume with the Placette Vishay attenuator. The difference will
be a revelation to you. This is why all Placette Audio products are sold with an
in-system trial. The improvement is not subtle. Hear just how good your sources
really are! Guy
Hammel |