22 XONE:02 User Guide
connection. Reversed polarity should be avoided and
checked for as it can cause uncomfortable phasing
effects as the listener moves between the speakers.
Punch Performance effect popular with DJ’s.
Pressing a button next to the crossfader punches in
(turns on) the opposite track.
Reverse Associated with the fader this swaps its top
and bottom ends so that it is fully on when pulled back
and off when up. Associated with the input channels
this swaps the channel signals to associate each with
the opposite controls. These functions provide greater
performance flexibility to suit different performance
styles.
RIAA Record Industry of America Association,
responsible for the long established equalisation
standard that is applied to the signal produced by a
turntable cartridge. Due to the physics of vinyl
reproduction the needle produces a reasonable high
frequency signal but much less low frequency. An
RIAA pre-amplifier compensates for this by inversely
attenuating the high and boosting the low frequencies.
Reverberation The way in which sound reflects and
bounces around the room after the source is removed.
This depends on the size and shape of the room as
well as the materials such as carpets, curtains and
clothing that absorb certain frequencies.
RPM Revolutions Per Minute. The measurement of
turntable speed, eg. 33, 45 RPM
Sampler Another performance effect popular with
DJs. The channel signal is sent to a digital processor
that samples (stores) a short duration of sound. The
output is returned through the effects loop return and
replayed by pressing a trigger. Many samplers
provide creative effects such as repeat and reverse.
Scratch Mixing The art of rhythmically rocking a
record back and forward on a turntable, to repeat a
certain sound, a vocal or tone, at the same time
operating the cross-fader to create a syncopated “wah
wah” chirp added over a bass heavy back beat.
Signal-to-Noise Ratio (SN) This is the difference
expressed in dB between the normal 0dB operating
level and the residual noise floor. It represents how far
above the equipment hiss level the signal operates.
More is better.
Slip mat A fabric turntable mat positioned under the
record so that the DJ can hold it stationary ready to let
go for a fast start at the point cued.
Sound-to-Light A processor that converts an audio
signal into a control voltage that triggers lighting
effects. This produces the popular disco effects with
lights flashing in time to the beat.
Sub Bass A loudspeaker designed to reproduce only
very low frequency sound, typically from around 30 to
120Hz. A crossover is used to route only the low
frequencies to the sub.
Tempo The rhythmic beat of the music, usually
referred to in BPM (Beats Per Minute). The DJ can
tap the tempo into the LFO so that its speed is in time
with the music.
Transform Performance effect popular with DJ’s.
Pressing a button next to the crossfader mutes (turns
off) the active music. Used for ‘stutter’ effects.
TRS Jack Refers to the 3-pole (stereo) ¼” jack plug
with Tip, Ring and Sleeve connections.
TS Jack Refers to the 2-pole (mono) ¼” jack plug with
Tip and Sleeve connections. TS cables can plug into
the XONE:02 impedance balanced outputs without
modification.
Turntable Also known as the ‘Ones and Twos’ or
‘Wheels of Steel’ or more conventionally a ‘record
deck’ this plays vinyl discs, still the most popular
source for DJ mixing. It is common for the cartridge to
plug directly into the mixing console ‘phono’ input
which provides the RIAA equalisation required. The
turntable usually has variable speed control so that the
DJ can synchronise the beat between tracks.
Up Fader Another term for the channel fader.
VCA Voltage Controlled Amplifier. An audio gain
element whose level is controlled by a remote DC
voltage rather than through a fader or rotary control.
VCA Crossfader Functions as an audio crossfader
but with the audio level controlled by a DC voltage
produced by the fader. This voltage can be
electronically filtered and is therefore able to remove
the clicks, scratches and drop-outs associated with
worn audio faders.
VCF Voltage Controlled Filter. An audio filter whose
cut-off frequency is controlled by a remote DC voltage
rather than a rotary or switched control. This provides
greater range and capability. This is available on other
XONE consoles and is used to produce the dramatic
sound of the classic analogue synthesiser filter.
XLR The professional standard 3 pin round
connector used for microphone and other balanced
connections. Equipment female sockets are for inputs,
male for outputs.
Order Codes
The following products and parts can be ordered from Allen & Heath or the approved dealer:
XONE:02/v XONE:02 2 channel DJ scratch mixer /v = specify voltage
XONE:32/v XONE:32 3 channel DJ mixer /v = specify voltage
XONE2:62/v XONE:62 6 stereo channel mixer /v = specify voltage
XONE2:464/v XONE:464 4 mic 6 stereo channel mixer /v = specify voltage
02-779 45mm Stereo Channel Fader for XONE:02
02-780 45mm Standard Crossfader for XONE:02
002-719 Optional P&G crossfader for XONE:02,32, 62 & 464
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