- DYNACORD DIGITAL SOUND SYSTEM PROCESSOR OWNER'S MANUAL

HIPASS X-OVER
The frequency crossover filter consists of a low pass filter in one channel and a high pass filter in the
adjacent channel. Here, the frequency x-over filter’s Hi-Pass parameters are set. The parameters of the
corresponding Lo-Pass should be set to the same values. An x-over filter provides the parameters “Type”
and “f”.
Parameter Settings / Value range
Default
Type
thru, 6 dB,
12dB Q0.5, 12dB Q0.6, 12dB Q0.7, 12dB Q0.8,
12dB Q1.0, 12dB Q1.2, 12dB Q1.5, 12dB Q2.0
Bessel 12 dB, Butter 12 dB, Linkwitz 12 dB,
Bessel 18 dB, Butter 18 dB,
Bessel 24 dB, Butter 24 dB, Linkwitz 24 dB
thru
f 20Hz - 20kHz 1.00 kHz
Pol norm, inv norm
The Type parameter defines the filter characteristics of the x-over Hi-Pass filter. Different slopes and filter
responses (6dB, 12dB with different Q values, Bessel, Butterworth, Linkwitz-Riley) are available and the
filter can be bypassed. The corresponding Lo-Pass filter should be set to the same characteristics.
The f parameter (frequency) sets the x-over Hi-Pass filter’s cutoff frequency. The corresponding Lo-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.
In the Standard Edit Mode, depending on the selected type of filter, channel inversion is automatically
set.
LOPASS X-OVER
The frequency crossover filter consists of a low pass filter in one channel and a high pass filter in the
adjacent channel. Here, the frequency x-over filter’s Lo-Pass parameters are set. The parameters of the
corresponding Hi-Pass should be set to the same values. An x-over filter provides the parameters “Type”
and “f”.
Parameter Settings / Value range
Default
Type
thru, 6 dB,
12dB Q0.5, 12dB Q0.6, 12dB Q0.7, 12dB Q0.8,
12dB Q1.0, 12dB Q1.2, 12dB Q1.5, 12dB Q2.0
Bessel 12 dB, Butter 12 dB, Linkwitz 12 dB,
Bessel 18 dB, Butter 18 dB,
Bessel 24 dB, Butter 24 dB, Linkwitz 24 dB
thru
f 20Hz - 20kHz 1.00 kHz
Pol norm, inv norm
The Type parameter defines the filter characteristics of the x-over Lo-Pass filter. Different slopes and filter
responses (6dB, 12dB with different Q values, Bessel, Butterworth, Linkwitz-Riley) are available and the
filter can be bypassed. The corresponding Hi-Pass filter should be set to the same characteristics.
Bessel 12 dB
Butterworth 12 dB
Bessel 18 dB
Bessel 24 dB
PARAMETERS
8-9