BSS Audio FDS-388 OMNIDRIVE Owner's Manual - Manual (Page 37)

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Top Soft Key
NAME
Middle Soft Key
EDGE SLOPE
Bottom Soft Key
FR/Hz (Edge
Frequency)
Each band can be named from a preset selection. The list includes basic names
such as 'Band A', 'Band B' etc and also band descriptions such as 'Low' and
'Lo Mid'.
These values set individual edge slopes for each band edge. Slopes are
selectable between 12, 18 and 24dB per octave. Note that Linkwitz-Riley
crossovers are specified as 12 or 24dB per octave although the FDS-388 will
allow similar edge shapes with 18dB per octave.
Selecting the bottom soft key allows the user to adjust the frequency of each
band edge individually. In this way, two bands can be made to crossover at a
different level to that of the defaults which are:
Linkwitz-Riley -6dB crossover
Bessel and Butterworth -3dB crossover
Alternatively two bands could be made to overlap, both bands passing the
same frequencies. e.g. Low and Low Mid bands could both have the same low
frequency edge.
This section allows the user to spread two or three bands out to form two or
three way crossovers. If the edges of a band are set to 'Out' at both high and
low ends the result is a full range output with a delay set in the Delay Screen.