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DEPTH<br />
1 2<br />
1+2 ASSIGN<br />
XFADE<br />
RES<br />
4<br />
3<br />
2<br />
1<br />
0<br />
20Hz<br />
5<br />
FILTER 1 ON<br />
LFO<br />
TAP<br />
TEMPO<br />
6<br />
7<br />
8<br />
9<br />
10<br />
MILD WILD<br />
MIXER SECTION — FILTERS and LFO<br />
HPF<br />
BPF<br />
LPF<br />
ON<br />
FREQ<br />
20kHz<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
8<br />
9<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
8<br />
9<br />
LFO Tap Tempo button<br />
Tap the tap tempo button in time with the beat<br />
to set the frequency of the LFO.<br />
LFO Depth control<br />
When assigned, the LFO modulates the filter with a<br />
cyclic frequency sweep effect in time to the beat set<br />
using the tap tempo button. The depth control<br />
adjusts how much effect the LFO has on the filter<br />
effect from fully off to very deep.<br />
LFO Filter Assign Switch<br />
Use this switch to assign the LFO to either or both<br />
the filters.<br />
Resonance Control<br />
This produces the classic analogue VCF sound by<br />
feeding some of the filter output back to its input.<br />
The control ranges from ‘mild’ producing a very<br />
subtle effect, to ‘wild’ producing a dramatic phase<br />
effect with feedback just short of oscillation.<br />
HPF Button<br />
Turns on the high pass (bass cut) filter slope. The<br />
light ring around the button illuminates when<br />
selected.<br />
BPF Button<br />
Turns on the band pass (bell shaped) filter slope.<br />
The light ring around the button illuminates when<br />
selected.<br />
LPF Button<br />
Turns on the low pass (treble cut) filter slope. The<br />
light ring around the button illuminates when<br />
selected.<br />
Frequency Sweep Control<br />
This control sets the –3dB cut-off frequency of the<br />
filter. It ranges from very low frequency (20Hz) to<br />
very high (20kHz).<br />
Filter On Switch<br />
Switches the filter on and off. The light ring around<br />
the button illuminates when the filter is active.<br />
Allen & Heath 15 <strong>XONE</strong>:<strong>3D</strong> User Guide