ALLEN & HEATH XONE:23 User Manual

11
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. A large
illuminated switch selects 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:23 Specifications

General

Channels quantity	4 channels
Digital sound processing	- bit
Line Signal-to-Noise Ratio (SNR)	20 dB
Microphone in	Yes
Headphone connectivity	3.5 mm
Product color	Black
Video capability	No
Equalizer bands quantity	3