Dynacord DSP 244 owner manual P A R A M E T E R S, Bessel 12 dB Butterworth 12 dB Bessel 18 dB

P A R A M E T E R S

The f parameter (frequency) sets the x-over Lo-Pass filter’s cutoff frequency. The corresponding Hi-Pass filter should be set to the same cutoff frequency.

Pol defines the polarity of the corresponding channel. Depending on the characteristic of the frequency crossover filter, inverting the polarity of a channel’s signal may become necessary; i. e.: set a negative polarity. Some filter types generate phase responses that lead to significant level reduction in the overall audio signal at the crossover frequency. This negative effect can be eliminated by inverting the polarity of the output that carries the low-frequency signal.

The following table provides you with a list of all filter types for which a channel’s signal has to be inverted for the corresponding filter pair.

Bessel 12 dB

Butterworth 12 dB

Bessel 18 dB

Bessel 24 dB

In the Standard Edit Mode, depending on the selected type of filter, channel inversion is automatically set.

X-OVER: f = 1kHz Type = Butterworth 12dB, Butterworth 24

X-OVER: f = 1kHz Type = Bessel 12dB, Bessel 24d

X-OVER: f = 1kHz Type = Linkwitz-Riley 12dB, Linkwitz-Riley 24dB

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