Troubleshooting guide

Modular Processors
SHURE
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P4800 System Processor Software Guide Page 67 of 108
Parameter Window Features
This section explains the features and parameter controls of the parametric equalizer processors using
the PEQ3+CS as the example, as pictured in figure 47 on the previous page. The features of the other
parametric equalizers vary only in the number of bands and the availability of the cut/shelf filters.
Response Plotter
This area of the parameter window is where you place and adjust parametric filters. It graphically displays
peak/notch filters as points and cut/shelf filters as square handles. When you initially open the processor
window, the response plotter contains no filter points and, if applicable, the cut/shelf filters appear in their
default positions. Click on a filter point or handle to view its response curve and adjust settings. Refer to
the Working with Filters section on page 69 for instructions on how to add filter points.
Response Graph
This curve is a graphical representation of the combined results of the filter points and handles in the
response plotter.
Note: The curve does not reflect the accumulated affect of multiple processor
blocks in the signal path.
Filter Points
Peak/Notch filters appear in the response plotter as filter points with adjustable bandwidth controls on
either side. Click once on a filter point to make it the current selection, then adjust its settings with the
mouse, keyboard controls or by using the value boxes. When you select a filter point, its response
curve is displayed in green across the response plotter, relative to zero.
Cut/Shelf Filters
The high and low cut/shelf filters appear as square handles. Each handle can be used as either a cut
or a shelf filter, depending on its vertical position in the response plotter. When you first open the
parameter window, the handles operate as high and low shelf filters, with a default setting of 0db at
20kHz and 25Hz, respectively. They become cut filters when you drag them to the bottom edge of the
response plotter.
Frequency
This indicates the frequency of the selected filter point. You can change the
value by clicking on the spin buttons, using keyboard controls, or by typing a
specific value. The frequency range is from 25Hz to 20kHz, with a default value
of 1kHz when you add a new filter point.