Filter Reference - ALLEN & HEATH Xone:43C User Manual

Allen & heath xone:43c dj mixer

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Quick start manual (2 pages)

Quick start manual (2 pages)

Quick start manual (6 pages)

Table Of Contents

Table of Contents

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 are 'state variable'. This means that they provide three simultaneous filter

HI-PASS FILTER

types: high-pass, band-pass and low-pass. Three large illuminated switches select which

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type is active. You can press any combination together to create different response types

such as 'notch' and an interesting 'all-pass' effect. The switches are 'soft switched' for live

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performance, meaning that the audio signal is ramped between filter states to prevent

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audible clicks.

Note that the last selected type is lost when power is removed from the console. The

LPF is always selected when power is applied.

0dB

The graphs below show the effect on the audio frequency response for the three filter

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types. The range of sweep from low to high frequency is shown together with the effect

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of adjusting RESONANCE (one frequency with several resonance settings shown).

The vertical scale shows the amount of cut or boost around the normal 0dB operating

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level. The horizontal scale shows the change in frequency from low (bass) to high

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(treble).

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BAND-PASS FILTER

HI-PASS FILTER

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0dB

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LO-PASS FILTER

BAND-PASS FILTER

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0dB

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Allen & Heath

LO-PASS FILTER

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