User Guide

The PAR-245 Equalizer/Preamp puts an incredible amount of
control at your fingertips. Correctly adjusted, it can solve many
of the problems you will encounter along your road to perfect sound.
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 your equalizer actually controls to
be able to use it effectively. On the face of the PAR-245 are five Boost/
Cut controls each corresponding to a range of frequencies. On the
top are the five sets of Frequency/Q Selection switches to adjust for
each Boost/Cut control on the front of the PAR-245 (See the chart on
pages 14 and 15 for Frequency/Q selection.)
Q is an indication of how wide or narrow the adjusted bandwidth is. A
low Q will affect a wide range of frequencies around the selected
center frequency resulting in a gently curved shape, while a high Q
affects a narrow band resulting in a peaked shape as shown below.
Parametric Operation
9
SYSTEM TUNING
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