XONE 3D USER GUIDE Carey proofed

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FILTER REFERENCE 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 and has its own frequency sweep control. A Low Frequency Oscillator (LFO) provides filter modulation. LFO modulation The LFO automatically sweeps the cut-off frequency up and down according to the beat entered by tapping the tap tempo button. The LFO can be applied to Filter 1, Filter 2, or both filters together for additional cyclic filter modulation effects. Filter Type Select The filters are ‘state variable’. This means that they provide three simultaneous filter types, highpass, band-pass and low-pass. Three large illuminated switches select which type is active. You can press any combination together to create different response types such as ‘notch’ and an interesting ‘all-pass’ effect. The switches are ‘soft switched’ for live performance, meaning that the audio signal is ramped between filter states to prevent audible clicks. Note that the last selected type is lost when power is removed from the console. The LPF is always selected when power is applied. The graphs below show the effect on the audio frequency response for the three filter types. The range of sweep from low to high frequency is shown together with the effect of adjusting RESONANCE (one frequency with several resonance settings shown). The vertical scale shows the amount of cut or boost around the normal 0dB operating level. The horizontal scale shows the change in frequency from low (bass) to high (treble). -20 20 100 1kHz 10k 20k Allen & Heath 28 XONE:3D User Guide +20 +15 +10 +5 0dB -5 -10 -15 -20 20 100 1kHz 10k 20k +20 +15 +10 +5 0dB -5 -10 -15 +20 +15 +10 +5 0dB -5 -10 -15 HI-PASS FILTER LO HI BAND-PASS FILTER LO HI -20 20 100 1kHz 10k 20k LO-PASS FILTER LO HI
OPERATING LEVELS It is most important that the system level settings are correctly set. It is well known that many DJs push the level to maximum with meters peaking hard in the belief that they are getting the best from the system. THIS IS NOT THE CASE ! The best can only be achieved if the system levels are set within the normal operating range and not allowed to peak. Peaking simply results in signal distortion, not more volume. It is the specification of the amplifier / speaker system that sets the maximum volume that can be achieved, not the console. The human ear too can fool the operator into believing that more volume is needed. Be careful as this is in fact a warning that hearing damage will result if high listening levels are maintained. Remember that it is the QUALITY of the sound that pleases the ear, not the VOLUME. This diagram illustrates the operating range of the audio signal. NORMAL OPERATING RANGE. For normal music the signal should range between –6 and +6 on the meters with average around 0dB. This allows enough HEADROOM for unexpected peaks before the signal hits its maximum CLIPPING voltage and distorts. It also achieves the best SIGNAL-TO- NOISE-RATIO by keeping the signal well above the residual NOISE FLOOR (system hiss). The DYNAMIC RANGE is the maximum signal swing available between the residual noise floor and clipping. ! An important note … The human ear is a remarkable organ with the ability to compress or ‘shut down’ when sound levels become too high. Do not interpret this natural response as a reason to turn the system volume up further ! As the session wears on ear fatigue may set in, and the speaker cones may become hot so reducing the effectiveness of the system and listeners to gain any benefit from increased volume. Allen & Heath 29 XONE:3D User Guide
Page 1 and 2: USER GUIDE Publication AP6388 Allen
Page 3 and 4: SOFTWARE INSTALLATION STOP! BEFORE
Page 5 and 6: CONTENTS Congratulations on purchas
Page 7 and 8: INTRODUCTION TO THE XONE:3D Welcome
Page 9 and 10: DESCRIPTION BPM COUNTER— Displays
Page 11 and 12: SOUNDCARD OPERATING MODES To config
Page 13 and 14: 7 +10! +6 +3 0 -3 -6 -10 OFF +6 FIL
Page 15 and 16: DEPTH 1 2 1+2 ASSIGN XFADE RES 4 3
Page 17 and 18: FRONT CONTROLS & CONNECTORS PHONES
Page 19 and 20: CAUTION WARNING: FOR CONTINUED PROT
Page 21 and 22: MIDI PULL MIX MODE 3 2 1 BPM OFF 4
Page 23 and 24: MIDI PULL MIX MODE 3 2 1 BPM OFF 4
Page 25 and 26: MAP 1 MAP 2 MIDI CONTROL SECTION MI
Page 27: Note No. (Hex) MIDI NOTE CHART Note
Page 31 and 32: adapter CABLES AND CONNECTIONS Slee
Page 33 and 34: RTN2 FL2R USER OPTIONS FX1 and FX2
Page 35 and 36: REPLACING THE CROSSFADER Replacing
Page 37 and 38: MIXER TROUBLESHOOTING If things don
Page 39 and 40: SOUNDCARD AND MIDI TROUBLESHOOTING
Page 41 and 42: 6. The configuration utility will n

XONE 3D USER GUIDE Carey proofed

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