ALLEN&HEATH User Guide For standard version VF-1 and RIAA version VF-1R Publication AP5917
XONE VF-1 User Guide AP5917 Issue 2 Copyright © 2004 Allen & Heath Limited. All rights reserved Whilst we believe the information in this guide to be reliable we do not assume responsibility for inaccuracies. We also reserve the right to make changes in the interest of further product development. This product complies with the European Electromagnetic Compatibility directives 89/336/EEC & 92/31/EEC and the European Low Voltage Directives 73/23/EEC & 93/68/EEC.
Important Safety Instructions – Read First Read instructions: Read and retain these instructions for future reference. Read the instructions on the Safety Sheet provided separately. Adhere to all warnings printed here and on the console and its power unit. Cover: Operate the unit with its cover correctly fitted. Refer servicing work to competent technical personnel only. Mains power: Connect the unit to a mains power supply only of the type described in this user guide and marked on the unit.
Important Note on Mains Voltage Setting The internal power unit has a universal mains voltage input able to operate within the range 100V to 240V.AC 50/60Hz. Ensure that your local mains voltage is within this range. Check that you have been supplied with an IEC mains lead fitted with a moulded mains plug suitable for your local supply. Important Mains Plug Wiring Instructions The unit is supplied with a moulded mains plug fitted to the AC mains power lead.
Contents Important Safety Instructions .....................................................3 Front and Rear Panel Drawings .................................................6 Welcome to the XONE VF-1 ......................................................7 Front Panel Controls ..................................................................8 Rear Panel Controls .................................................................12 Rear Panel Connectors .........................................................
4 5 6 3 ENV-FOLL TO OVERDRIVE 5 6 4 3 7 2 8 1 9 0 10 SLOW VF-1 SERIAL No: 7 2 8 1 FAST DECAY ENVELOPE FOLLOWER 4Hz 9 0 OFF ON 10 VALVE OVERDRIVE 50-60Hz~ 10W MAX 4 8 1 9 16 WAVEFORM 0 MIDI OUT FUSE IN 6 7 ANALOGUE STEREO FILTER 12dB/Octave stereo 24dB/Octave mono with Valve Overdrive 8 2 1 10 LOCAL OFF 5 3 9 0 10 RESONANCE LFO DEPTH LFO LEFT RIGHT HI-PASS BAND-PASS IN JACK OUTPUT MIX+INVERT FILTER LEFT RIGHT 20Hz 20kHz VCF FREQUENCY LOW-PASS USE LEFT I
Welcome to the The XONE VF-1 is a high quality 1U rack analogue filter unit featuring an enhanced version of the legendary VCA filter circuit used in our award winning XONE mixer range. Three different filter types are provided, high-pass, band-pass and low-pass. These can be selected together to create further types, for example high-pass and low-pass together produce a notch filter.
Front Panel Controls 5 1 4 5 6 3 ENV-FOLL TO OVERDRIVE 5 6 4 3 7 2 8 1 9 0 10 SLOW ENVELOPE FOLLOWER 8 1 FAST DECAY 9 0 10 1 OFF ON 3 4 8 0.8 5 LFO 4 6 3 7 8 1 16 WAVEFORM 0 0.2 9 10 LFO DEPTH 11 12 13 6 ANALOGUE STEREO FILTER 7 12dB/Octave stereo 24dB/Octave mono with Valve Overdrive 8 2 1 9 0 10 RESONANCE 4 Envelope Follower Envelope Follower Decay Sets the decay speed of the envelope follower, either slow or fast.
4 Envelope follower to overdrive Enables the envelope follower circuit to modulate the valve overdrive so that the valve distortion/compression effect increases dynamically with the music. Produces a subtle, interesting effect.. 5 LFO Speed Sets the speed at which the LFO (low frequency oscillator) will modulate the filters, from a slow 0.2Hz (approximately 12BPM) to a very fast 16Hz (960 BPM). 6 LFO Waveform Selects the type of waveform that the LFO outputs to modulate the filter.
9 Hi-Pass HI-PASS FILTER +20 +15 Turn on the high-pass filter to progressively remove low frequencies below the cut-off selected using the VCF FREQUENCY control [12]. The switch illuminates when the hipass filter is active. The diagram shows the response as the frequency control is rotated. It also shows the boost around the cut-off frequency when resonance is increased.
12 VCF Frequency Sets the cut-off frequency of the filter from 20Hz (fully anticlockwise) to 20kHz (fully clockwise). This lets you sweep the frequency across the full audio range to create dramatic performance effects. 13 Filter On Press this switch to route the audio signal through the valve overdrive and filter circuits. In the off mode the signal bypasses the filter and valve stages and is routed directly from input to output at unity gain. When selected the switch illuminates.
Rear Panel Controls 1 50-60Hz~ 10W MAX VF-1 MIDI OUT FUSE LOCAL OFF LEFT THIS APPARATUS MUST BE EARTHED WARNING: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE FUSE WITH SAME TYPE AND RATING ATTENTION: REMPLACER LE FUSIBLE AVEC UN DES MEMES CARACTERISTIQUES.
Rear Panel Connectors 1 2 50-60Hz~ 10W MAX VF-1 3 MIDI OUT FUSE IN 4 LOCAL OFF LEFT 5 RIGHT 7 RIGHT 9 IN JACK OUTPUT MIX+INVERT FILTER LEFT 8 USE LEFT I/P 24dB/OCT L R LEFT LEFT RIGHT RIGHT T500mA L 250V 20mm SERIAL No: THIS APPARATUS MUST BE EARTHED WARNING: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE FUSE WITH SAME TYPE AND RATING ATTENTION: REMPLACER LE FUSIBLE AVEC UN DES MEMES CARACTERISTIQUES.
4 Left and Right XLR Outputs Electronically balanced, wired pin 2 hot (+), pin 3 cold (-) and pin 1 ground. Nominal output level is +4dBu with a massive +22dB headroom up to a maximum +26dBu drive. The XLR output is designed to operate with professional balanced equipment such as speaker processors, mixing consoles and amplifiers.
Audio Cables To ensure the high quality performance for which the VF-1 has been designed, we recommend the use of professional grade cables and connectors. Avoid the use of cheap domestic parts. Ensure all wiring is checked for reliable connection and safety grounding. The diagram below illustrates the more common audio cables used.
Grounding The connection to ground (earth) in an audio system is important for two reasons: • SAFETY - To protect the operator from high voltage electric shock, and • AUDIO PERFORMANCE - To minimise the effect of ground loops which result in audible hum and buzz, and to shield the audio signals from interference pickup.
To ensure safe and trouble-free operation we recommend the following: • Have your mains system checked by a qualified electrician If the supply grounding is solid to start with you are less likely to experience problems. • Do not remove the ground connection from the power unit mains plug The console chassis is connected to mains ground through the power cable to ensure your safety. Audio 0V is connected to the console chassis internally.
4x M6 rack bolts 482mm (19“) 1U FRONT PLATE 44mm (1¾ “) 32mm (1¼“) 39mm (1½“) REAR CASE FROM REAR OF FACE 125mm (5”) 430mm (17“) 200mm (8”) Allow 75mm (3”) min clearance for connectors 18 XONE VF-1 User Guide
Installing the Unit 19” rack mount The VF-1 fits into a standard 19” rack system taking up 1U height. Use M6 bolts with plastic protective cups. These are usually supplied by the rack manufacturer. Plinth or furniture mount The VF-1 can be mounted in a custom built plinth or other furniture. Use the cutting template details shown here. The dimensions allow clearance for the cover fixing screws. Secure with suitably long M6 bolts and nuts. Use protective cups to protect the unit’s surface.
MIDI MIDI is short for Musical Instrument Digital Interface. It is the popular serial connection standard conceived in the 1980’s so that keyboards and other electronic instruments could communicate with each other. Applications now include sound and lighting consoles, computer sequencing, show control and performance effects control. The XONE VF-1 has MIDI In and Out sockets allowing external control of the filter and synchronization with other MIDI devices.
Setting the MIDI Channel Number The MIDI channel number and mode settings on the XONE VF-1 are adjusted using power-up menus. These are accessed by holding down buttons while applying power to the unit. We advise that you turn the amplifiers off and remove the VF-1 from the audio signal path while changing MIDI settings to avoid unexpected sounds being generated. MIDI Ch Hi-pass Band-pass Low-pass Filter ON 1. Hold down the Hi-pass filter button whilst switching on the power to the VF-1.
Using MIDI to Link VF-1 Units For more dramatic effects two XONE VF-1 units can be connected together to make a stereo 24dB/Octave system. Connect a MIDI cable from the MIDI Out of the first VF-1 (master) to the MIDI In of the second (slave). Press in the rear-panel Local Off switch on the slave to allow it to respond to MIDI In messages. The slave VF-1 will now follow the filter type, cut-off frequency and filter on/off settings of the master.
Using MIDI to Connect a Sequencer or Effects Controller By connecting the XONE VF-1 to an external sequencer you can record and replay filter sweeps and settings changes. Connect the MIDI Out from the VF-1 to the MIDI In of a sequencer and the MIDI In on the VF-1 to the MIDI Out of the sequencer. Configure MIDI Thru on the sequencer to echo MIDI Input to MIDI output. Now make sure that the Local OFF switch on the rear-panel is selected so that the VF-1 will respond to MIDI In messages.
MIDI Control Codes The XONE VF-1 has a standard set of MIDI control assignments. This is always used for MIDI output and input and cannot be disabled. Three additional MIDI In modes can be enabled to allow for advanced applications using additional MIDI messages. Standard MIDI Assignments These are used for both MIDI Input and output. To control the filter using MIDI make sure the VF-1 rear panel Local OFF switch is pressed in.
Mode 1 : XONE:92 Controller Mode Connect the MIDI output of an Allen & Heath XONE:92 DJ Mixer to the MIDI input of the VF-1 and enable this option. The rear-panel Local OFF switch should be pressed in to allow the VF-1 to receive MIDI messages. It is also important to set the MIDI channel of the VF-1 to the same channel used by the XONE:92. See your XONE:92 users guide for information on its MIDI channel assignment.
XONE VF-1 MIDI Implementation Chart O = Available Function X = Not used Transmitted Received Remarks Default 16 16 Option 1-16 1-16 Transmits and receives on the same MIDI channel Default X X Messages X X Altered X X Note Number X O Keyboard tracking mode Note ON X O Keyboard mute mode Note OFF X O Keys X X Channel X X Pitch Bend X X Basic Channel Mode Velocity Aftertouch 26 XONE VF-1 User Guide
Function Transmitted Received 74 O O 80 O O 81 O O 82 O O 83 O O 12 X O 13 X O 92 X O Program Change X X System Exclusive X X Song Position X X Song Select X X Tune Request X X Clock X X Commands X X Local On/Off X X All Notes Off X X Active Sensing X X System Reset X X Remarks Control Change XONE:92 controller mode System Common System Real Time Aux Messages XONE VF-1 User Guide 27
Technical Specification Operating Levels Connection Impedances XLR +4dBu Headroom +22dB Line Inputs >9K ohms Jack 0dBu Headroom +22dB Outputs <50 ohms RCA 0dBu Headroom +22dB RIAA Preamp (VF-1R version) 3-140mV Maximum output 47K/330pF XLR +26dBu TRS jack +22dBu Frequency Response Line to Main output Distortion 10Hz-30KHz Type VCF, stereo 12dB/octave or mono 24dB/octave selectable hi-pass, band-pass, lo-pass, notch, all-pass Sweep range 20Hz-20KHz Control Manual, envelope follower,
BLOCK DIAGRAM ENVELOPE FOLLOWER VALVE OVERDRIVE FREQUENCY RESONANCE LFO SPEED ANALOGUE STEREO FILTER DECAY 0 INPUTS EF TO OD 0 10 10 WAVEFORM 0 10 FILTER ON HI-PASS BAND-PASS LOW-PASS OUTPUTS MIDI OUT DC JACK 0dBu MIDI AND SWITCH PROCESSOR ENV FOLLOWER SIDECHAIN MIDI IN LFO LEFT XLR IN L +4dBu JACK FREQUENCY L R FILTER BLOCK 0dBu RIGHT XLR IN LEFT XLR + RIAA PRE-AMP (VF-1R VERSION) 3-140mV 47K/330pF RESONANCE + R FILTER TYPE + PHONO IN 0dBu L +4dBu LOCAL OFF VALVE
User Notes: 30 XONE VF-1 User Guide
XONE VF-1 User Guide 31
XONE VF-1 User Guide
