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Filters and Frequency Tables
18.0 Filters and Frequency Tables
18.1 Standard The standard filter provided for the FDS-360 is of the Linkwitz-Riley response
based on two second order Butterworth circuits in series. The response is a
Filters 24dB/OCT slope with a 'corner' frequency where the output of the filter if 6dB
down from its pass band level. The use of these filter realisations has been
well documented and provides the best possible phase and amplitude response
for driving large speaker systems.
Table 17.1 lists the component values for various frequencies and should be
used in conjunction with the drawing for the FDS-360F frequency card (See
Figure 18.3). Blank cards, or ready made cards can be provided by any BSS
dealer.
All resistors should be