PX Equalization Modules
The equalizer section of the PX Main features plug-in modules
that enable the user to select both the center frequency and
bandwidth of the four front panel FILTER controls. The “stock” PX
comes equipped with the following modules:
Filter #
Frequency
Q-(Bandwidth)
1
35Hz
2.1
2
129Hz
2.2
3
1.1Khz
0.6
4
18Khz
1.3
These stock filters are found to be effective in most applications
and are a good starting point in the process of equalizing the
typical system. If it is determined that there are acoustic problems
that the stock filters do not effectively cover, there are 120
additional filters from which to select. Contact Technical
Assistance at the factory for ordering information. Please specify
center frequency and ‘Q’ when ordering additional filter modules.
NOTE: ‘Q’ is a numeric expression of the effective width of a
filter. In general the larger the ‘Q’ the narrower the effective
bandwidth. For example, a filter with a ‘Q’ of 4.5 would be a spike
filter effecting a very narrow band of frequencies while a filter such
as the stock #3 centered at 1.1Khz with a ‘Q’ of 0.6 effects
virtually the entire midrange.
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