ALLEN & HEATH Xone:22 User Manual

12
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:22 Specifications

Connections - Inputs

phono RCA connection impedance	47K/330pF
line RCA connection impedance	20K ohm
FX RTN RCA connection impedance	10K ohm
mic XLR connection impedance	<2K ohm

Connections - Outputs

main mix balanced XLR output impedance	68 ohms
monitor RCA output impedance	68 ohms
record RCA output impedance	600 ohms
FX SND RCA output impedance	47 ohms

Performance

distortion	0.002% THD+N
noise	-84dBu un-weighted
frequency response	10Hz to 30kHz +0/-3dB

Weight and Dimensions

weight	2.2 kg
packed weight	3.5 kg