ALLEN & HEATH XONE:23C User Manual

15
FILTER REFERENCE
The VCF Filters
A voltage controlled filter is an audio filter where the cut-off frequency is altered by a DC
control voltage rather than a variable resistor. This produces a much wider operating
range and more control over the filter response to create unlimited combinations of
tonal effect.
Filter Type Select
The filters provide two simultaneous filter types: high-pass, and low-pass. Large
illuminated switches select which type is active.
The graphs below show the effect on the audio frequency response for the two filter
types. The range of sweep from low to high frequency is shown together with the effect
of adjusting RESONANCE.
The vertical scale shows the amount of cut or boost around the normal 0dB operating
level. The horizontal scale shows the change in frequency from low (bass) to high
(treble).
10k20 1kHz100 20k
0dB
+5
+10
+15
+20
-5
-10
-15
-20
HI-PASS FILTER
LO
HI
10k20 1kHz100 20k
0dB
+5
+10
+15
+20
-5
-10
-15
-20
LO-PASS FILTER
LO
HI

ALLEN & HEATH XONE:23C Specifications

General

Brand	ALLEN & HEATH
Model	XONE:23C
Category	Music Mixer
Language	English