Precision Power PMQ-210, Руководство пользователя

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7
PARAMETRIC OPERATION
The PMQ-210 Parametric Equalizer puts an incredible amount of
control in your hands. Correctly adjusted, it can solve many of the
problems you will encounter along your road to perfect sound.
Incorrectly adjusted, it can cause just as many problems. By following
these guidelines, you will avoid common pitfalls in system tuning and
get your sound quickly dialed in. We recommend that you use a Real
Time Analyzer (RTA) to speed things up, but it is possible to tune your
system without it.
It is important to understand what a parametric equalizer actually
controls to be able to use one effectively. On the face of the detachable
control panel are ten sets of three controls each. On the top row are
the frequency selection controls, which allow you to dial in the exact
frequencies in need of adjustment. There are ten overlapping ranges
that cover the entire audio spectrum. The second row consists of the
"Q" adjustment from 1.5 to 4 for each frequency selected. Q is an
indication of how wide or narrow the adjusted bandwidth is. A low Q
(1.5) will affect a wide range of frequencies around the selected center
frequency resulting in a gently curved shape, while a high Q (4) affects
a narrow band resulting in a peaked shape as shown below. The last
row of controls determines the amount of cut or boost,
±
12dB, at each
selected frequency.
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