Allen&Heath Xone 32 - Manual (Page 23)

XONE:32 User Guide 23
Tips and Troubleshooting
For your safety do not remove the EARTH (ground)
connection in the power lead of the console or connected
equipment.
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Have your MAINS SYSTEM checked by a qualified
electrician. If the earthing is solid to start with you are less
likely to experience problems.
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Use high grade AUDIO CABLES and check them for
reliable connection. It is well known that many audio
system problems are due to faulty cables and connectors.
In a club or similar installation strict SOUND LEVEL
and noise regulations may apply. Check that your system
levels are correctly set up to comply.
To avoid damage to your hearing start with the
HEADPHONES level control at minimum and turn up only
as much as is needed to maintain comfortable listening
level. Do not drive headphones at high listening levels for
long periods of time.
Always switch connected AMPLIFIERS on last and
off first to avoid thumps when the console and connected
equipment is turned on or off.
Reduce gain if the red meter PEAK led flashes.
These warn you that you are near clipping which may
result in system overload and distortion. The XONE:32
provides plenty of drive and headroom when operated
around the 0 to +5 meter points. Check that the amplifier /
speaker system is correctly matched and set up for correct
levels.
Increasing VCF RESONANCE boosts a narrow
band of selected frequencies. Make sure you reduce the
channel gain if the red peak meters start to flash. It is best
to start experimenting with this control set to minimum.
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If you suspect a console fault. The console is the
heart of the audio system and is often suspected faulty
when a problem occurs. Usually the fault is found to be
with other equipment in the system, typically the
interconnecting leads, input sources, or level matching
between equipment. Check for source problems by
unplugging each channel in turn listening for a change in
symptom. To check the console, isolate it by unplugging
all sources and outputs leaving just headphones and a
reference source such as a CD player connected.
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I have plugged in a microphone but it does not
work. The XONE:32 is designed to operate with non-
phantom powered dynamic microphones such as the
popular vocal types. Do not use microphones which
require phantom power. If it has an on/off switch check
that it is turned on. Make sure the front panel GAIN
control is turned up.
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The signal sounds very distorted with high level
and excessive bass. Only plug turntables needing RIAA
equalisation into the PHONO inputs. Other equipment
should be plugged into the LINE inputs.
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There is a hum on the turntable channels. Check
that the turntable earth strap has been correctly connected
to the console chassis earth post. Also check that the
turntable headshell and cartridge are correctly aligned and
plugged in.
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The output meter reads fine but the signal is
distorted. Check the channel meter to make sure it is not
peaking red. If it is, the output meter may still read fine if
the fader or master level control is not set fully up. Reduce
the input level trim if the channel meter reads too high.
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Only one side of the stereo mix is working. Check
that the BAL control is not set fully to either L or R. Also
check for bad connections, in particular RCA phono leads
and turntable headshell and cartridge pins.
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There is feedback. Check that the microphone is not
placed next to the headphones or loudspeakers. The mic
may pick up its own signal and feed back. In loud listening
conditions feedback can sometimes be caused by
mechanical vibration through the turntables into the
cartridge, or even the needle resting on a cued turntable
starting to resonate in the groove of the record.
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When the VCF is switched on there is very little
sound. Operate the VCF frequency slider to restore the
frequency content of the sound.
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The LED is flashing but the LFO is not working.
Check that the LFO is turned on and its LED is green,
flashing red to indicate speed. The LED always flashes
red whether it is on or off.
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I tap in the tempo but the LED flashes too fast.
The x2 has been switched on.
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There is no cue signal. Check that the CUE/MIX
slider is not set fully right for mix only.
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There is no channel signal. Check that the rear
panel input selector switch is correctly set.
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The crossfader is not working. Make sure the
crossfader is turned on and its front panel green LED lit.
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The crossfader works backwards. Check that the
reverse switch has not been pressed and its red LED on.
If it is off then check that the crossfader has been re-fitted
the right way round if previously removed.
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I have connected a stereo source to a single input
using a Y-adapter but it sounds bad. Do not connect
more than one output to the input. These adapters are
designed to feed one output to two inputs, not the other
way round.
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The switch settings are different when I switch the
console on. The settings always return to default on
power up. You can store preferred settings in the user
presets and select one of these after power up.