PROEL PC260 - Delay

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For each output channel two crossover points can be set, which are named Xo1
and Xo2. Please note that in the FLAT default preset both are set as Thru (the
signal passes thru without filtering process).
The parameters are:
LP/HP
The crossover filter generally consists of a low pass filter in one channel and a
high pass filter in the adjacent channel.
H-pass: a high pass filter passes frequencies above the crossover point and
attenuates those below.
L-pass: a how pass filter passes frequencies below the crossover point and
attenuates those above.
As standard Xo1 is set as H-pass (HIGH-PASS) and Xo2 is set as L-pass (LOW-
PASS), but they can be set also differently.
See the figure below (note: all the following figures are taken from the PRONET
software):
TYPE
The PC260 offers a wide choice of HiPass and LoPass filters with different slopes
and responses. The Type parameter defines the characteristics of the crossover
filter:
•Butterworth:6dB,12dB,18dB,24dB,48dB
•Bessel:12dB,18dB,24dB48dB
•Linkwitz-Riley:12dB,24dB,48dB
Eachltercanbebypassedsettingitas"thru".
The figures below show the various slopes with the FREQ parameter set at 1 kHz:
FREQ
Frequency offers a selectable frequency range from 20 Hz to 20 KHz.
DELAY
PC260 offers input and output delay.
Master A and B input delay is useful for compensating
different arrival times of sound originating from loudspeakers
that are closer or further away from the listener than others.
Channel 1 to 6 output delay is useful for compensating physical offsets of the
acoustic centers of transducers within a loudspeaker cabinet. For example,
due to cabinet construction, the acoustic center of a high frequency transducer
may be placed behind or in front of the acoustic center of the low frequency
transducer. The Delay parameter can align the audio signal between the
multiple transducers within the loudspeaker. The output delay can be useful
also to align the subwoofer, usually placed at ground level, with the satellite
speakers suspended. Available delay parameters are DELAY and UNITS:
The DELAY parameter allows the user to set the Delay time values (0 to
+300.00ms or 0 to 200m/675ft).
This figure shows the frequency spectrum of an output with Xo1 set as H-pass, Butt 24, 100Hz and Xo2 set as
L-pass, Butt 24, 1KHz all signal highlighted is cut out.
CUT OUT CUT OUT
PASS THRU
BUTTERWORTH BESSEL LINKWITZ-RILEY
12
24
48
18
24
48
12
12
24
48
6
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