LA Audio DLX200 - Manual (Page 14)

14
HIGH AND LOW PASS FILTERS (LPF ON OUTPUT ONLY)
DLX 260
F1 F3 F2
Out 1 Freq Shape
LPF 100Hz LR24
F1 F2
• F1: Frequency, <<out, 10.0Hz to 25.6kHz, out>>
• F2: Filter shape/slope.
The bottom left hand corner of the display will indicate whether the filter is high or low pass. As you
can see from the diagram above, input channels have one high pass filter while outputs have one
high and one low pass. Filter shape and slope is selectable from Butterworth, Bessel, Linkwitz-Riley
and Hardman. Filter slopes of up to 8th order or 48dB / octave are provided, although not all filter
types are available in all slopes.
The Hardman type filter is particularly interesting. Rather than following a linear slope, Hardman
filters become progressively steeper, allowing you to create more precise crossovers with less
overlap. Because of their nonlinear shape, dB/octave measurements are not truly representative of
Hardman filters’ responses; they are always described by their order rather than their slope.