XONE:92
User Guide
23
Replacing the Crossfader
The crossfader on a DJ mixer is heavily used and
can suffer considerable wear and tear. The audio
design using VCAs prevents clicks and scratchiness
as the fader wears. However, the movement can
become mechanically stiff or sloppy in time, or
become ingrained with dirt. Should this be the case
the fader may need replacement.
The
XONE:92
crossfader is removable and can
easily be replaced in a few minutes. Make sure you
order the correct Penny & Giles version from your
Allen & Heath dealer: Part number 002-719.
Use a medium size cross-point (Pozidriv)
screwdriver to undo and remove the two outer
screws on the crossfader plate. Do not remove the
inner screws. Lift the crossfader assembly up and
away from the console panel. Unplug the cable
from the old crossfader and plug in the new
assembly. Check that the connector is correctly
aligned and pushed on. Replace the assembly
making sure the cable faces the left side of the
console. Refit the screws and test operation.
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.
Two stereo VCFs are provided, one either side of
the crossfader. Each can be switched in or out, has
its own frequency sweep control and can be
assigned to either side of the crossfader. Two
independent Low Frequency Oscillators LFO
provide filter modulation.
5
FILTER ON switch
. Each filter has its own ON
switch. The blue light-pipe lights when the filter is
switched on. The signal is not affected by the filter if
the switch is in its off position. Use this to punch the
filter effect in or out.
6
FILTER assign switch
. In the central position
the music signal is not affected by the filter. Toggle
to route the signal through the filter. To route to the
left (X) filter make sure the switch is in its left
position. Switch to the right position to route to the
right (Y) filter. To avoid audible clicks only route
channels to the filters when the filter is OFF.
7
FREQ
VCF sweep control
. The VCF control
sets the cut-off frequency of the filter (-3dB point).
Each filter has its own frequency sweep control to
adjust the cut-off point anywhere from low to high
frequency. Rotating the control during performance
produces dynamic sweeping effects or filter sweeps.
These large soft touch controls are positioned either
side of the crossfader for convenient live operation.
0dB
CUT
-20
-40
-60
-80
0dB
-20
-40
-60
-80
DIP
