User guide

XONE VF-1 User Guide 11

VCF Frequency

Sets the cut-off frequency of the filter from 20Hz (fully anti-

clockwise) to 20kHz (fully clockwise). This lets you sweep the

frequency across the full audio range to create dramatic

performance effects.

Filter On

Press this switch to route the audio signal through the valve

overdrive and filter circuits. In the off mode the signal bypasses

the filter and valve stages and is routed directly from input to

output at unity gain. When selected the switch illuminates.

The filter ON switch is also ‘soft switched’ so that it can be used

during performance to switch the filter in or out without audible

clicks.

Note: With no filter type selected the audio signal is muted

(turned off).

Using the Filters

The three filter select switches are ‘soft switched’ and therefore

will not produce any transient clicks when switched. This means

the filters can be seamlessly switched in and out during

performance to create the required effects.

The filters can be used as a mix aid or an effect. For example, you

can introduce a track by sweeping the Hi-pass filter anti-clockwise

from high to low to gradually add the mid and low music energy.

You can also introduce the bass beat of a track using the Low-

pass filter to gradually bring in the higher frequency definition of

the music. Sweeping a resonant filter across or in time with a

track can add a unique effect to a performance. Using the filters

with a bass line or an instrument can add a new dimension to its

sound. Experiment with the Envelope Follower and LFO too.

More than one filter type may be selected at the same time.

Simply press two or more switches simultaneously. The selected

filter switches illuminate to show they are active:

Notch – Combine Hi-pass and Low-pass. Used with low

settings of RESONANCE you get a phasing effect as a small

range of frequencies is removed. Try sweeping the effect across

the full audio frequency range.

All pass – Combine Hi-pass, Band-pass and Low-pass. A

surprising effect considering that all frequencies are ‘passed’.

However, the filter type interaction around the cut-off point creates

an interesting effect that varies from subtle to dramatic depending

on the setting of the RESONANCE control.

Try playing different types of music and experiment with the

controls. The creative possibilities of the VF-1 are limited only by

your imagination…