Owners manual
Contents
1. musical instruments 4 SAFETY INSTRUCTIONS BEFORE USING THIS PRODUCT FOR THE FIRST TIME PLEASE READ THE ENTIRE USER MANUAL THOROUGHLY 5 NSN cHIPPMANN CS 8 Series VCF02 Rev1 0 May 2012 e PLEASE AVOID SHARP BENDING OF ANY CORDS AND CABLES e CORDS SHOULD NOT BE INSTALLED WITHIN THE REACH OF CHILDREN OR PETS e DO NOT TREAD THE ENCLOSURE OF THE PRODUCT DO NOT PLACE HEAVY OBJECTS ON IT e BEFORE REMOVING THE PRODUCT FROM THE RACK PLEASE DISCONNECT THE POWER PLUG AND ALL OTHER CABLE CONNECTIONS e PLEASE DISCONNECT THE POWER PLUG FROM THE OUTLET IN CASE OF A THUNDERSTORM e NEVER OPEN THE ENCLOSURE OF THE PRODUCT NEVER TRY TO MODIFY THE INTERNAL CIRCUITRY ONLY QUALIFIED SERVICE PERSONNEL IS ALLOWED TO OPEN THE ENCLOSURE e DO NOT PLACE OPEN FIRE ON OF THE PRODUCT CANDLES ASH TRAYS HOT THAI CURRIES ETC e NEVER EXPOSE THE PRODUCT TO WATER BEER OR MOISTURE e ADULTS ARE TO MAKE SURE THAT CHILDREN FOLLOW ALL SAFETY INSTRUCTIONS SAME THING GOES FOR PETS e AVOID MECHANICAL STRESS OR IMPACT DO NOT DROP THE PRODUCT EVEN IF THERE IS A CONTROL LABELLED DROP e DONOT USE THE PRODUCT WITH TOO MANY OTHER ELECTRONIC DEVICES RUNNING FROM ONE SINGLE OUTLET ESPECIALLY IN CONNECTION WITH EXTENSION CORDS DO NOT ATTEMPT TO SAVE MONEY ON CHEAP SOLUTIONS BUY PROPER HIGH DUTY POWER DISTRIBUTORS AND CORDS e NEVER USE EXTENSION CORDS WITH LESS MAXIMUM LOAD THAN THE TOTAL POWER CONSUMPTION OF ALL DEVICES CO2. 1 the LED of the button shows current setting when plugged in the corresponding button is not active LP24 socket input an attached CV switches the filter function LP24 to non inverted 24 1 V inverted 2 3 V or off lt 1 the LED of the button shows current setting when plugged in the corresponding button is not active Sockets 29 34 accept AC voltages covering the entire audio range 1 V Oct socket input calibrated CV input for cut off centre frequency control scaling is 1V octave 10 NSN cHIPPMANN CS 8 Series VCF02 Rev1 0 May 2012 36 CV2 socket input DC CV input routes the applied modulation signal to the CV2 control 37 0 5 V Oct socket input non calibrated CV input for cut off centre frequency control scaling is 0 5V octave 38 CV1 socket input DC CV input routes the applied modulation signal to the 1 control 39 Input2 socket input AC audio input routes the applied audio signal to the Input2 control 40 socket input AC audio input routes the applied audio signal to the Input1 control 7 2 Back Fig 2 shows the back of the module with consecutively numbered elements Pa AUD OFF hea ore WA NcHIPPMANN 1 vroct CS 8 Series VCF 02 CHIPPI UCF2 gt ND prc gt a T Fig 2 11 NSN cHIPPMANN CS 8 Series VCF02 Rev1 0 May 2012 Filter module contain
3. the cut off resonance frequency d LP12 red LP24 red generates a phase shift of 180 inversion on signals below the cut off resonance frequency This results in 63 different combinations in total 3 BP6 x 3 BP18 x 7 LP12 24 combinations 23 NSN cHIPPMANN CS 8 Series VCF02 Rev1 0 May 2012 Summery of filter type rules ALL active blue high passes just one LP 12 or 24 active red BP6 BP18 any all passes any other ALL inactive off band passes BP6 BP18 any LP12 and LP24 both off or both at once active with subtended algebraic signs LP12 24 green red or red green low passes at least one LP active though not as the band pass setting BP6 BP18 any The following chart c 1 shows a selection of filter types and their button combinations organised by type and slope Except ALL the button labelling matches the scheme on the front panel left to right Filter Type Low passes Ti 1 12 BP6 6 db LP classic RC element powerful character T2 BP18 LP12 BP6 6 db LP unobstrusive character T3 BP18 LP12 BP6 6 db LP pronounced character T4 BP18 LP12 BP6 6 db LP soft character T5 4BP18 LP12 12 db LP classic double RC element powerful character T6 LP12 12 db LP unobstrusive character T7 BP18 LP12 12 db LP with Notch at Reso Freq T8 41P24 BP18 18 db LP classic triple RC element powerful character 24 d
4. unique You will love it since it very effectively compensates a phenomenon that is not only common on most synthesizer filters but also unwanted at that With low pass filters the level of the signal passed through usually drops significantly when increasing resonance resulting weak sounding bottom end On the CS8 you can work against this effect by using the Drop control It adjusts the boost of the signal passed through between 12 dB and 0 dB also see fig 5 top The Drop function is only available in low pass modes Note 1 The more you turn up the Drop control the more the filter input will be overloaded Sometimes these resulting saturation effects may be desired sometimes not A good compromise between effective level compensation and low saturation effects are Drop settings between 3 dB and 6 dB Experiment and go from there Note 2 The Drop compensation only works with low pass settings 18 NNCHIPPMANN CS 8 Series VCF02 Rev1 0 May 2012 Unfortunately there is no way of getting round this fact regardless of any design tricks If you happen to come across one please feel free to share yourself with us Eternal praise will be yours on LED The activated Drop function is indicated by the lit yellow LED At the same time it shows an active low pass setting Gain The Gain control adjusts the output boost of the filter or in other words the level ratio between output and VCF INPUT sum of input 1 and inpu
5. 1 92 mm x 3 HU 129 mm x 47 mm Installation depth behind the panel lt 30mm 9 2 Signals and ratings Max input voltage at sockets 26 38 12 V Negative voltages at sockets 31 34 may result in unwanted effects but will not cause any damages to the circuits Max input voltage at sockets 39 40 12 Output noise at single taps worst case filter fully open no resonance L24 90 uVrms 81 dbV LP12 70 uVrms 83 dbV BP18 60 uVrms 84 dbV BP6 70 uVrms 83 dbV ALL 150 uVrms 76 dbV 27
6. CF02 is a very versatile fully analogue programmable and voltage controlled filter VCF It is capable of processing all sorts of audio signals It is designed for mounting into a 3U Eurorack with an internal 12V power supply This module is capable of producing 121 different filter types 27 low pass 18 high pass 13 band pass and 63 all pass notch phase type filters External control voltages can be used to control all functions thus the CS 8 VCF02 can be remote controlled by sequencers foot pedals switches etc The CS 8 VCF02 features some unique and very powerful functions that are entirely new to voltage controlled filter modules such as emphasize 2nd harmonic distortion and drop The CS 8 VCF02 features a unique layer cake design This way its installation depth is reduced to a minimum compared to other Eurorack modules Design and implementation meet highest technical standards concerning usability sound quality and signal to noise ratio The front panel is made from an anodised and printed piece of aluminium sheet metal of 2 mm gauge The entire design and production work was done in Germany NSN cHIPPMANN CS 8 Series VCF02 Rev1 0 May 2012 SWARRANTY Gom 1 1 Limited Warranty 1 2 Terms of Warranty 1 3 Warranty 5 1 4 Claim for damages ee eseeeetentttnn
7. NNECTED TO A SINGLE POWER OUTLET COMBINED OVERLOADING EXTENSION CORDS CAN CAUSE FIRE AVOID MECHANICAL STRESS ON SOCKETS AND KNOBS SWITCHES PROTECT YOUR SPEAKERS AND EARS AGAINST EXCESSIVE AUDIO LEVELS THE CS 8 VCF02 UNIT IS CAPABLE OF GENERATING EXTREMELY LOW AS WELL AS EXTREMELY HIGH FREQUENCIES BOTH MIGHT CAUSE SERIOUS DAMAGE TO AUDIO EQUIPMENT AND EAR DRUMS 5 MAINTAINANCE CLEANING e BEFORE CLEANING THE PRODUCT PLEASE DISCONNECT THE POWER 6 NSN cHIPPMANN CS 8 Series 2 Rev1 0 May 2012 PLUG FROM THE OUTLET OR DISCONNECT THE MODULE FROM ITS POWER CONNECTOR BY PULLING THE FLAT RIBBON CABLE e USEADRY OR SLIGHTLY MOIST CLOTH OR COMPRESSED AIR FOR CLEANING NEVER USE ANY CLEANER OR THINNER E G PAINT THINNER OR ACETON PRINTS AND PAINTWORK WILL IMEDIATELY BE DESTROYED ALSO AVOID ALCOHOL ISOPROPYLIC GAS SPIRITS SCOTCH SINGLE MALTS FOR A START OR ABRASIVE HOUSEHOLD CLEANERS 6 GETTING STARTET 6 1 Unpacking The box should contain the following items 1 x CS 8 VCFO2 rack mount module 1 x Ribbon cable 20 cm length with two 16 pole IDC connectors 4x M3 screws 4x polypropylene washers This owners manual If the content of the box turns out to be incomplete please get in touch with your dealer or Schippmann electronic musical instruments immediately In case of damage caused in transit please get back to the responsible carrier and Schippmann electronic musical instru
8. SN cHIPPMANN CS 8 Series 2 Rev1 0 May 2012 sto 10 11 12 13 14 15 16 17 18 19 20 21 22 23 function LED lights up green non inverted red inverted Gain switch 0 dB 20 dB boost of audio Input1 drive LED lights up red at approx 2 vpp peak to peak audio level sum of input 1 and input 2 and increases its brightness at higher input levels High levels overdrive the filter circuitry and produce non linear performance with interesting sonic results Input1 control attenuates the incoming audio signal at Input1 socket between gt dB and 0 dB Phase reverse switch 0 180 inverts 180 0 is no inversion the incoming audio signal at Input2 socket Input2 control attenuates the incoming audio signal at Input1 socket between dB and 0 dB CV1 control adjusts scaling of the FM control voltage applied to CV1 socket CV control voltage between 0 Oct V and 3 6 Oct V Phase reverse switch 0 180 inverts 180 0 is no inversion the incoming CV signal applied to CV1 socket CV2 control adjusts scaling of the FM control voltage applied to CV2 socket CV control voltage between 0 Oct V and 3 6 Oct V Phase reverse switch 0 180 inverts 180 0 is no inversion the incoming CV signal applied to CV2 socket Freq control adjusts the cut off centre frequency of the filter between 2 Hz und 35 kHz CV Res control adjusts scaling of the res
9. WV NCHIPPMANN electronic musical instruments CS 8 Series Owners manual VCF02 NSN cHIPPMANN CS 8 Series VCF02 Rev1 0 May 2012 User manual by Carsten Schippmann Graphic design CS 8 Series Carsten Schippmann Concept and development Carsten Schippmann English translation by Matthias Fuchs Stephen Parsick Contact Schippmann electronic musical instruments Dipl Ing Carsten Schippmann Wilhelm Kabus Str 46 D 10829 Berlin Web www schippmann music com Email info schippmann music com The manufacturer Schippmann electronic musical instruments is constantly striving for improvements and developments of their products Therefore we reserve the right to change technical specifications which improve our products at any time without notice This includes the look of the unit which might differ from pictures in this manual No part of this publication is to be reproduced transmitted transcribed or translated in any form or by any means whatsoever without written permission by Schippmann electronic musical instruments 2012 Schippmann electronic musical instruments errors excepted subject to change without prior notice NSN cHIPPMANN CS 8 Series VCF02 Rev1 0 May 2012 PREFACE First of all congratulations on the purchase of this 3U Eurorack synthesizer module This manual contains a condensed description of the functionality and addresses users with a certain level of elementary technical knowledge The CS 8 V
10. b LP classic quad RC element powerful character T9 LP24 24 NSN cHIPPMANN CS 8 Series VCF02 Rev1 0 May 2012 B1 BP18 BP6 6 6 db BP classic double RC element smooth character B2 BP18 BP6 6 6 db BP full bodied character LP24 41P12 6 12 db BP classic triple RC element very smooth character B4 18 6 18 db BP classic quad RC element very smooth character B5 LP24 BP18 LP12 12 12 db classic quad RC element very smooth character High passes ALL LP12 6 db HP classic RC element H2 ALL LP24 6 db HP full bodied character 12 db HP classic double RC element H3 ALL BP18 LP12 BP6 very steep H4 ALL LP24 BP6 12 db HP soft silky character H5 ALL BP18 LP12 12 db HP soft full bodied character A1 ALL 18 Soft 6 db Notch A2 ALL some more Notch A3 ALL BP18 25 db Notch pronounced notches and silky character A4 ALL BP18 BP6 21 db Notch very notch y very silky character A5 ALL LP24 LP12 BP6 fat Notch ALL LP24 BP18 LP12 BP6 Notch best approach to 4 pole Notch 25 NSN cHIPPMANN CS 8 Series VCF02 Rev1 0 May 2012 Phase shifter Phaser mixed with unprocessed signal ALL BP6 10 db Notch with phaser characteristics A8 ALL BP18 BP6 Notch stronger phaser A9 ALL LP24 BP18 LP12 BP6 2 stage phaser bes
11. ccepts 5 V 5 VDC applied CV is added to the current parameter knob setting Reso 0 5 V CV socket input modulation input to control the resonance parameter applied CV of 5VDC and control 18 Reso 0 measures up with resonance at maximum resp an attached CV of 5VDC results in a resonance of 0 when control 18 Reso is set to 10 Reso CV socket input DC CV input routes the applied modulation signal to the CV Res control 2nd H socket input an applied CV switches the function 2nd Harm to on 2 3 V or off 42 V the LED of the button shows current setting when plugged in the corresponding button is not active ALL socket input an applied CV switches the filter function ALL to on 243 V or off lt 2 the LED of the button shows current setting when plugged in the corresponding button is not active BP6 socket input an attached CV switches the filter function BP6 to non inverted 24 1 V inverted 2 3 V or off lt 1 the LED of the button shows current setting when plugged in the corresponding button is not active LP12 socket input an attached CV switches the filter function LP12 to non inverted 24 1 V inverted 2 3 V or off lt 1 the LED of the button shows current setting when plugged in the corresponding button is not active BP18 socket input an attached CV switches the filter function BP18 to non inverted 24 1 V inverted 2 3 V or off lt
12. d pass function Notch function Signal Signal frequency Fig 4 Control voltage inputs are CV7 CV2 0 5V Oct and 1V Oct Both control s CV1 and CV2 are directly connected to their input sockets They simply attenuate the signal between the factor 0 and 1 The corresponding switches provide a phase shift of 0 no shift or 180 phase inversion of the applied modulation signal RESO The factors that influence the filter parameter RESO also have an effect on its self resonance At higher resonance settings frequencies around the cut off centre frequency are emphasized more than others which produces a resonant peak 16 NSN cHIPPMANN CS 8 Series VCF02 Rev1 0 May 2012 The Reso control controls this boost from 0 no resonance to 10 self oscillation The starting point of the self oscillation depends a bit on the Emph parameter setting see below It will start approx at settings of Reso 6 if Emph 1 and 8 if Emph 0 3 Fig 5 shows the effect of the Resonance and Drop parameters of a low pass filter Level dB ALevel dB fc fc emergence ofa v resonance peak resonance drop gain loss Low pass Low pass function function Signal frequency Signal frequency Fig 5 The corresponding control voltage inputs are CV Res and Reso 0 5 V The CV Res control is directly connected to the input socket It simply attenuates the signal betwee
13. ments immediately We will support you in this case 6 2 Installation Place the unit on a clean dry and sturdy surface or use a suitable keyboard stand or 19 rack For 19 rack mounting a suitable rack 3U Eurorack with 12V power supply rails is required The CS 8 VCFO2 uses discrete all analogue electronics Thus certain parameters such as Resonance and Emphasize may be temperature sensitive We recommend placing the CS 08 VCF02 away from heat sources such as radiators lamps or other units that produce heat e g power amps or internal power supplies 7 CONTROLS 7 1 Front panel NSN cHIPPMANN CS 8 Series VCF02 Rev1 0 May 2012 Fig 1 shows the front panel with consecutively numbered controls and sockets 11 12 13 14 15 16 1718 19 2021 10 9 22 8 7 5 Odb 20 db 23 LP24 BP18 5 24 4 3 2 25 1 26 27 28 dv save e 40 39 38 37 36 35 34 33 32 31 30 29 Fig 1 1 ALLbutton activates the all pass function blue LED lights up 2 button activates the 6 dB band pass non inverted or inverted function LED lights up green non inverted red inverted 3 LP12 button activates the 12 dB low pass non inverted or inverted function LED lights up green non inverted red inverted 4 18 button activates the 18 dB band pass non inverted or inverted function LED lights up green non inverted red inverted 5 LP24 button activates the 24 dB low pass non inverted or inverted 8 N
14. n the factor 0 and 1 The corresponding switch provides a phase shift of 0 no shift or 180 phase inversion of the modulation signal applied to Reso CV EMPH This function is really unique It allows for control of the level of emphasis independent from the strength of the resonance setting Thanks to this the tone produced by the self oscillating filter will not necessarily have a high level which makes it much easier to handle within a musical or timbral context Use low Emph values Emph 0 05 0 1 and the filter will oscillate only slightly use high values Emph 0 5 1 and the filter s self oscillation will produce very high output levels just as you may know from any other synthesizer filter Fig 6 will help to explain this feature in a bit more detailed way 17 NSN cHIPPMANN CS 8 Series 2 Rev1 0 May 2012 Level dB Level dB fc fc A Start of self oscillation start of self oscillation low high Emph values Emph values Low pass Low pass function function LT Signal frequency Signal frequency Fig 6 Please note Some other manufacturers use the term emphasis to describe the parameter that we call resonance On your CS8 emphasis has a completely different meaning Please make sure not to mix up these terms The control voltage input labelled 0 5 V Emph can be used to control the entire parameter range Drop This function is also pretty
15. nts does not accept claims for damages of any kind especially consequential loss or damage direct or indirect of any kind however caused Liability is limited to the value of this product The 4 NSN cHIPPMANN CS 8 Series VCF02 Rev1 0 May 2012 general terms of business drawn up by Schippmann electronic musical instruments apply at all times Please note The controls and switches especially the Freq cutoff frequency or Reso resonance controls are programming facilities no real time controllers Tweak them carefully since we cannot be held liable for abused potentiometers and switches 2 CE AND FCC COMPLIANCE STATEMENTS This device has been tested and deemed to comply with the DIN EN 60065 standards This device has been tested and deemed to comply with the requirements listed in FCC Regulations part 15 The device complies with EN 55103 1 and EN 55103 2 standards Because of the entirely analogue construction this device does not generate radio frequencies and will not interfere with radio frequencies generated by other electronic devices 3 DISPOSAL This device has been manufactured to RoHS standards in compliance with the requirements of the European parliament and council and is thus free of lead mercury and cadmium Notice This product is still special waste and 15 not to be disposed of through regular household waste For disposal please contact your local dealer or Schippmann electronic
16. on to the general terms of business of the manufacturer Schippmann electronic musical instruments 1 2 Terms of Warranty Schippmann electronic musical instruments reserves the right to execute warranty services only if the product comes with copy of the dealer s original invoice Final discretion of warranty coverage lies solely with Schippmann electronic musical instruments Any Schippmann electronic musical instruments product deemed eligible for repair or replacement under the terms of this warranty will be repaired or replaced within 30 days after receiving the product at Schippmann electronic musical instruments Damages or defects caused by improper handling or opening of the unit by unauthorized personnel user included are not covered by this warranty Products which do not meet the terms of this warranty will be repaired exclusively at the buyer s expense and returned C O D with an invoice for labour materials return shipping and insurance Products repaired under warranty will be returned with shipping prepaid by Schippmann electronic musical instruments Outside Germany products will be returned at the buyer s expense 1 3 Warranty transferability This warranty is extended to the original purchaser and cannot be transferred No other person retail dealer etc shall be entitled to give any warranty promise on behalf of Schippmann electronic musical instruments 1 4 Claim for damages Schippmann electronic musical instrume
17. onance control voltage applied to Reso CV socket between 0 resonance Volt and self oscillation 5 Volt Phase reverse switch 0 180 inverts 180 0 is no inversion the incoming CV signal applied to Reso CV socket Reso control adjusts the resonance of the filter Q factor between 0 1 and self oscillation Emph control adjusts the emphasis of resonance and thus controls the level of the self oscillation between 0 05 weak emphasis low self oscillation level and 1 strong emphasis high self oscillation level on LED indicates the activity of the Drop control lights up when low pass functions are active Drop control controls the loss of signal level Drop below the cut off frequency resp passed through frequency range when resonance increases Range between 12 dB and 0 dB only active at low pass settings LED lights up yellow Gain control adjusts the output gain of the filter between 20 dB and O0 dB clip LED lights up when filter output is clipping results in hard 9 NSN cHIPPMANN CS 8 Series 2 Rev1 0 May 2012 24 25 26 2T 28 29 30 31 32 33 34 35 distortion 2nd Harm button adds soft harmonic distortion 274 harmonic to the output signal increasing at higher resonance levels lights up red when active Output socket provides the filtered output signal Emph 0 5 V CV socket input modulation input to control the Emphasize parameter a
18. s the core of the filter circuitry Reso trimmer P6 calibration of zero resonance point 3 Emphasize feed through trimmer P5 calibration of the emphasize modulation signal feed through to the audio output no feed through 4 Resonance feed through trimmer calibration of the resonance modulation signal feed through to the audio output no feed through 5 Output offset trimmer P7 calibration of audio output DC offset 0V 6 Cut off centre frequency offset trimmer P2 calibration of cut off centre frequency 35 kHz Freq Pot 15 fully clockwise 7 1V Octscaling trimmer P1 calibration of CV scaling at socket 35 1V oct 8 16Pin power cable connector N 7 3 Initial operation The power connector s 8 pin out in top view refer to fig 2 is assigned as follows Bottom to top left to right Thus pin 1 is located at bottom left pin 2 above pin 1 etc Pin 15 is at bottom right pin 16 at top right Pin 1 2 12V labelled with a triangle Pin 3 8 GND ground 0 V located outward on all sockets Pin 9 10 121 Pin 11 16 in use To hook up power to the module connect one of the IDC sockets of the included flat ribbon cable to the connector refer to fig 2 Observe guide key for the polarity of the connector in order to avoid pin reversal The red tag of the cable is to match the triangle label 7 4 Calibration All trimmers are 12 gauge trimmers i 12 turns are needed to co
19. t 2 The range is between 20 dB and 0 dB Use the Gain control to reduce the output level in order to avoid undesired clipping watch clip LED The filter output signal can be tapped from the output socket 2nd Harm button As you may have noticed already your CS8 sports some pretty unique features the 2 Harm button is one of them It generates a soft distortion in the filter output which emphases the 274 harmonic overtone resulting in a subtle warm sounding coloration When activated the button lights up red The corresponding control input 2nd H 29 allows for a remote control of this function Plugging in a cable will render the button inactive but the LED will still show the status of the function The input accepts a DC voltage of 12 V 12 V as well as audio signals of any frequency The function is activated at a voltage of 3 V or higher and is disabled at 2 V or lower hysteresis Slope This function selects the different filter types low high band pass etc They can be selected by using the five buttons labelled LP24 BP18 LP12 BP6 and ALL Their respective function is described in the following section ALL button This special filter function passes all frequencies to the filter output It lights up blue when active The corresponding control input ALL allows for remote control of this function Plugging in a cable renders the button inactive but the LED still shows the status of the function The inp
20. t approach All Low passes with Notch feel ALL LP12 softly opened up lowpass A11 ALL BP18 LP12 opened up lowpass A12 ALL LP12 BP6 opened up lowpass more notch y character A13 ALL LP24 opened up lowpass even more notch y A14 ALL LP24 BP18 opened up lowpass quite notch y A15 ALL LP24 41P12 strongly opened up lowpass quite notch y All Low passes with Phaser Notch feel A16 ALL BP18 LP12 BP6 opened up lowpass with phaser feel A17 ALL LP24 BP18 BP6 opened up lowpass with strong phaser feel 18 ALL LP24 BP18 LP12 BP6 Strongly opened up lowpass Phaser Phase inverter Phase inverter inverts all A19 ALL LP24 LP12 BP6 frequencies below the centre reso frequency Phase inverter inverts all A20 ALL LP24 BP18 LP12 BP6 frequencies below the centre reso frequency with soft Notch feel All pass passes all frequencies A21 ALL BP6 unprocessed 26 NSN cHIPPMANN CS 8 Series VCF02 Rev1 0 May 2012 9 TECHNICAL DATA AND SIGNAL VALUES 9 1 Technical Data in general Input and output sockets mono jack sockets 3 5 mm 1 8 Input sockets have grounded switch 0 V Power 12 V 12 V polarity protection Power consumption max 150 mA for both supplies 12 V Proper ambient temperature 0 C 55 C 32F 131F Net weight module only approx 400 g 0 88 Ibs Dimensions W x H x D 24 PU 12
21. t in a low pass setting 1 ALL always inactive 2 BP6 and BP18 any 3 At least one LP function active a LP12 and LP24 should not have different algebraic signs therefore no settings like LP12 green LP24 red LP12 red LP24 green since this would result in a band pass see above LP12 and LP24 with the same algebraic sign generate a signal boost of 6 dB addition of two low passes Simple maths Initially this results in 54 low pass combinations in total 3 BP6 x 3 BP18 x 6 LP12 24 combinations each of them in phase and phase inverted Since the characteristics stay the same we have 27 different low pass functions altogether All pass notch phase shifter 22 NSN cHIPPMANN CS 8 Series VCF02 Rev1 0 May 2012 These filter types pass all frequencies but alter the phase of the signal Some of them e g notch types generate phase cancellations at certain frequencies see fig 4 1 ALL always active 2 BP6 and BP18 any 3 More than one LP function has to be negative red LED If not the setting will generate a high pass function a LP12 green LP24 red OR LP12 red LP24 green generate a signal boost with factor 1 0 dB from input to output b LP12 green OR LP24 green generate a signal boost of factor 2 6 dB on signals below the cut off resonance frequency LP12 green LP24 green generates a signal boost of factor 3 49 5 dB on signals below
22. tain voltage offset might build up It can be reset to zero 0V by trimmer P7 located at the back of the module drive LED The drive LED lights up at signal levels of 2 vpp volts peak to peak and higher applied to the VCF INPUT At higher levels the LED lights brighter There is no clipping produced but a non linear distortion softly coming in FREQ Several factors influence the VCF parameter FREQ known as cut off frequency f or resonance frequency The cut off frequency defines the frequency at which the high and low pass filters start to attenuate the signal and band pass filters have their maximum peak centre frequency Around the cut off resonance frequency the signal is also emphasized which leads to more sound coloration up to self oscillation of the filter The Freq knob covers a parameter range of 2 Hz to 35 kHz External control provides a maximum range of 40 kHz and virtually no limits at the low range e g 0 1 Hz Fig 4 shows the four basic types of filter characteristics and their cut off frequency resonance frequency curves 15 NSN cHIPPMANN CS 8 Series VCF02 Rev1 0 2012 Level dB Level dB Resonance frequency Resonance frequency cutoff freq fc cutoff freq fc e db Octave Low pass High pass function function Signal frequendy Signal frequency Level dB Level dB Resonance frequency Resonance frequency center freq fc Notch freq fc Ban
23. tenuated see fig 4 The following combinations will result in a band pass setting 1 ALL always inactive 2 BP6 and BP18 any since they are band pass filters in itself all combinations of them will also result in more band pass filters 3 LP12 and LP24 both have to be activated but with opposite algebraic signs either a LP12 green LP24 red band pass in phase or b LP12 red LP24 green band pass out of phase by 180 for all frequencies Initially this results in 26 band pass combinations in total 3 BP6 x 3 BP18 x 3 LP12 24 combinations 1 all off each of them in phase and phase inverted Since the characteristics stay the same we have 13 different band pass functions High pass filters A high pass lets the frequencies above the cut off resonance frequency pass Frequencies below are attenuated see fig 4 The following combinations will result in a high pass setting 21 NSN cHIPPMANN CS 8 Series VCF02 Rev1 0 May 2012 1 ALL always active 2 either LP12 red LP24 disabled b LP24 red LP12 disabled 3 BP6 and BP18 any Subtraction of one low pass LP12 or LP24 produces a high pass This means 18 different high pass combinations in total 3 BP6 x 3 BP18 x 2 LP12 24 combinations Low pass filters A low pass lets the frequencies below the cut off resonance frequency pass Frequencies above are attenuated see fig 4 The following combinations will resul
24. ttentttnntttntttntttnt 2 CE AND FCC COMPLIANCE STATEMENTS 3 5 4 SAFETY 5 5 MAINTAINANCE CLEANING Cic ixl ce xg arzt MR 7 6 7 6 2 Installation 7 CONTROES m P Z I Front panel UM UM NU MU E S 7 7 2 Back 11 7 3 Initial operation 12 7 4 Calibration 12 8 MODULE DESCRIPTION 13 8 1 Layout and functions 13 8 2 Filter types 21 9 TECHNICAL DATA AND SIGNAL VALUES 27 9 1 Technical Data 9 2 Signals and threshold values ees 27 NSN cHIPPMANN CS 8 Series VCF02 Rev1 0 May 2012 1 WARRANTY 1 1 Limited Warranty Schippmann electronic musical instruments warrants the mechanical and electronic components of this product for a period of two 2 years from the original date of purchase according to the warranty regulations described below If the product exhibits any faults within the specified warranty period that are not excluded from this warranty Schippmann electronic musical instruments shall at its discretion either replace or repair the product This warranty exists in additi
25. u guessed it off means that the function is not active By combining these settings more on this below you can create up to 121 different filter types which truly gives a new dimension to the term multi mode filter The five corresponding control voltage inputs allow for remote control of these functions As soon as a cable is plugged in the corresponding button will no longer be active but its LED will still be working showing the current setting These inputs work at positive DC voltage from OV to 12V Negative voltages may cause unpredictable behaviour but will not cause any detrimental effects or electronic damage OVto 1V ideal 0 V setting off gt 1Vto 3V ideal 2 to 2 5 V setting green gt 3V ideal 4 to 5 V setting red The five filter functions LP24 BP18 LP12 BP6 and ALL are combined according to their algebraic sign and define the resulting behaviour of the filter Example If button ALL lights blue BP18 green LP24 red and all others are off the output signal will behave like this 20 NSN cHIPPMANN CS 8 Series VCF02 Rev1 0 May 2012 Output ALL BP18 LP24 resulting in a high pass filter 8 2 Filter types In the following section you will find some basic rules that will help you create various sorts of filter types Band pass filters A band pass filter lets a band around the centre resonance frequency pass Frequencies above and below are at
26. ut accepts a DC voltage of 12 V 12 V as well as audio signals of any frequency The function is activated at a voltage of 3 V or higher and is disabled at 2 V or lower hysteresis BP6 button This filter function activates a band pass type It attenuates frequencies above and below the centre frequency or resonance frequency at a slope of 6 dB octave 19 NSN cHIPPMANN CS 8 Series VCF02 Rev1 0 May 2012 LP12 button This filter function activates a low pass type It attenuates frequencies above the cut off frequency or resonance frequency at a slope of 12 dB octave BP18 button This filter function activates a band pass type It attenuates frequencies above the centre frequency or resonance frequency at a slope of 18 dB octave and below at 6 dB octave LP24 button This filter function activates a classic low pass type It attenuates frequencies above the cut off frequency or resonance frequency at a slope of 24 dB octave The four buttons labelled LP24 BP18 LP12 BP6 as well as the previously mentioned ALL function work like this Their respective function e g BP18 is added or subtracted to from the filter output depending on the setting which is indicated by its LED colour Hit each button repeatedly and it will change off green red off green red etc Green means that the selected filter function works with a positive algebraic sign addition red means a negative algebraic sign subtraction and yo
27. ver the entire range Trimmers P2 P6 and P7 increase their parameters when turned clockwise Trimmer P1 increases the sensitivity when turned clockwise meaning the control voltage variation that is required to cover a one octave range is reduced Trimmers P4 and P5 should better be left untouched 12 NSN cHIPPMANN CS 8 Series VCF02 Rev1 0 May 2012 Needless to say that the module 2 is delivered perfectly calibrated but we thought we d point that out anyway 8 MODULE DESCRIPTION 8 1 Layout and functions Fig 3 shows the layout of the VCF02 module 13 CS 8 Series VCF02 Rev1 0 May 2012 NASN CHIPPMANN Q indino pau lt lt T AA 94 081 0 d i N o ARA qp 02 0 E ES SS o d d acca E L Ly ponso zo dog ASO osay 9594 zindu LAD Fig 3 14 NSN cHIPPMANN CS 8 Series VCF02 Rev1 0 May 2012 INPUT The audio inputs are labelled Input1 and Input2 They are true AC inputs Both controls Input1 and Input2 are decoupled by means of a capacitor and directly connected to their input sockets They simply attenuate the signal between the factor 0 and 1 Input switch provides a signal boost of 0 dB resp 20 dB Input2 switch provides a phase shift of 0 no shift or 180 phase inversion Output Output is a DC output After some operation time a cer
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