filtered coffee
Contents
1. filteredCOFFEE user manual 261 WINS lt gt Contents A ner ee ee nn earner ee eee enna ae 3 ST SVMS ay st a Scant are eats Sela 3 A A E o A EeEr 4 pe Lia A o y e A ce cadet DREEDTE 4 Safety Instructions corta edi 5 A 5 Quick Start nn 0290908509 6 Block e MA E E A ee errr 7 Controls In Detail 2 19 8 8 6 INPUT BENE nado 8 ENVelope FOLIOW LEV 055696 67 8 ELFO SPEED LFO2 SPEED sonia 8 High Pass Pl laca 8 RE SONANCE ee ee E E E E re 8 CVT LEVEE tii 8 A A E e Ue A O EEE 8 O A secre ec peace 66 8 Low Pass li E 6 A A 8 8 6 OVI LEVEI cata sete tartan E E Eee RESEN HAr SENE 9 GV2 TEVE O 0098 9 GUT OFRE sae aaa di a e ic oo 9 A A Er En Eee Here een Ea 9 NERE E oy Tossa eens ieee nee E enamine tins 9 B pass MIE ac a 9 Ct LEVE E eie aae A E E eE Ee E E ma 9 OUTPUT VOLUME catas ibid 10 de oere e O E EE E 11 POWERIN rai 11 SIGN E aida 11 An td ser een barrer le blee RER SKEEL nn 11 ENVelope QUE suizas ia ia 11 PEDAL IN arista a ico 11 Specification Rotary Controls 15 Toggle Switches 7 Push Pull Switches 3 LEDs 3 red yellow green Jack Sockets 6 35mm 14 Size 1U Weight Power 15V AC input 500mA Circuits Envelope Follower Low2. Frequency Oscillator x 2 High Pass Filter 12dB oct Low Pass Filter 12dB oct combined with the HPF produces a Band Pass Filter Voltage Controlled Amplifier The HPF LPF VCA and Env Follower are accurate clones of the Korg MS20 synthesiser which has a distinct sound Introduction Congratulations on buying the Phobos Filtered Coffee The Filtered Coffee FC is part of the Phobos range of music ma chines which includes the Black Coffee analogue monosynth and the Oberkorn analogue sequencer The FC is a versatile filter effects unit whose filter circuits are based on the legendary Korg MS20 monosynthesiser which has a unique and distinctive sound Any audio source can be used with the FC The FC has been made to provide a high number of flexible modula tion routings to allow many filter effects to be created The FC can produce anything from subtle filter sweeps right up to howling screaming distorted doings It can also take standard acoustic type sounds and make them analogue e g play real drums through it and get analogue percussion out the other side Two FCs can easily be combined to produce stereo filter effects and auto panning between speakers This is easily achieved by linking the audio source and the LFO signals using the rear jack sockets The FC is based on analogue circuitry it does not rely on processor speed or software updates so it s value will keep for far longer than its digital cou
3. damage the unit any shorting may be hazardous Never open the case or attempt to make repairs Refer any servicing to a qualified service personnel Mounting The FC can be rackmounted in any standard 19 rack case It requires only 1U and very little depth Alway use all 4 mounting holes so it is secured in the rack Alternatively just place the unit on a stable surface Rubber feet can be stuck on the base to stop it sliding about Quick Start Guide This section is intended for those who just want to quickly plug in the unit and get going Ensure the unit is switched off Plug you audio input to the rear panel Audio In socket Plug the rear panel Audio Out socket to your mixer Turn the input level and output volume controls to minimum Setup your mixer levels as appropriate Power up the unit Turn the LPF AUDIO IN LEVEL pot to maximum Move IN BYP switch to IN Move the VCA switch 2to THRU Turn the VCA CV1 2 LEVEL control to maximum Turn the HPF CUTOFF control to minimum Turn the LPF CUTOFF control to maximum Set the main output level to around 50 Now slowly increase the INPUT LEVEL A signal should start to be heard The INPUT LEVEL needs to be adjusted as high as possible without distortion unless you require dis tortion as this can be a useful effect You will need to balance the OUTPUT VOLUME so you do not overload your mixer Now you should be up and running witha fairly un effected signal Reme
4. indicate when it reacts to a signal LFO A Low Frequency Oscillator is a circuit that produces a repeating waveform The unit has 2 indeependent LFO s each outputing a triangle waveform voltage The signal can be used to sweep the filters up and down or to add tremelo to the output level VCA The Voltage Controlled Amplifier is a device that controls the level or volume of a signal via a voltage This way the output level of the unit can be varied with a LFO or cv pedal If the VCA is not modulated by any CV or itis not switched to THRU no signal will be heard as the volume will be zero HPF The High Pass Filter is a circuit that can will only let high frequencies through it It filters out the lower frequencies The point at which the lower frequencies are filtered is set by the cut off frequency The roll off is 12db oct LPF The LowPass Filter is a circuit that can will only let low frequencies through it It filters out the higherfrequencies The point at which the higher frequencies are filtered is set by the cut off frequency The roll off is 12db oct Together the LPF and HPF can be combined to be a Band Pass Filter BPF This means a band of frequencies are passed trhough filtering out the lower and higher frequen cies passed the cut off points set by the two CUTOFF controls Certain combined settings of the LPF and HPF may result in no output signal This is because we have not restricted the ranges of the two filter
5. io amp ed SiGnal IN THRU E This is a direct copy of the input signal which is made available to be fed through to other Filtered Coffee s or other processors Two Filtered Coffes can be connected up for stereo use Note the signal is unbuffered Par E HPF CV IN 0 0 90 0 0 0 0 0 0 OQ o ENVelope OUT The envelope follower CV signal is available here HPF SIG OUT PEDAL IN Plug the optional CV pedal in here There are notes later if you wish to source your own pedal LPF SIG IN PEDAL CV OUT The Pedal signal is turned into a useable CV and is available here The range is 0 to 12V F LPF CV IN F EG IN LFO1 OUT The LFO1 CV signal is available here VEA CW IN LFO2 OUT The LFO2 CV signal is available here k 35 oo HPF IN The HPF cut off can be controlled via an external CV using this socket Range is 12 to 12V HPF SiGnal OUT The signal filtered by the HPF is available here before is is further filtered by the LPF LPF SiGnal IN If you wish to feed a signal through the LPF VCA only bypassing the HPF use this socket LPF CV IN The LPF cut off can be controlled via an external CV using this socket Range is 12 to 12V VCA SIGnal IN If you wish to feed a signal through the VCA only bypassing both filters use this socket VCA CV IN The VCA level can be controlled via an external CV using this socket Range is 12 to 12V SIGNA
6. L OUT The processed signal is available here Unprocessed if the Bypass switch is set to BYP Optional CV Pedal Introduction The FC features a CV pedal input A special kind of variable level foot pedal can be used to produce a variable CV The CV range is 0 to 12V The signal can be routed to various modulation destinations via the front panel switches The pedal is ideal for hands free control i e guitarists Use Connect the CV pedal to CV PEDAL IN on the rear panel As the pedal is push forwards the voltage will increase The optional pedal we can supply is made of very durable plastic and will suit most musicians However we have yet to see whether it will withstand unreasonalbe stomping from heavy metal guitarists Any CV pedal that is terminated with a stereo 6 35mm jack plug and with the correct internal wiring can be used The stereo 6 35mm pedal jack plug must have the potentiometer wiper on the tip as shown in the diagrams below 1 Signal 2 12V 3 Ground Description of sections ENV FOLW Envelope Follower An envelope follower is a circuit that takes an audio input signal and produces an output control voltage that represents the amplitude of the audio input This would generally be used so that a VCA level could be controlled by the audio input level It can also be used to control the filter cut off The CV LEVEL control will set how sensative the follower is to the input level The fol lower LED will
7. OLUTIONS FC e amp oe c 3 2002 Controls In Detail INPUT LEVEL This control sets the input level of the signal fed into the Audio In socket At higher settings it is possible to overload the input signal for a distorted sound if required ENVelope FOLloW LEVEL This control sets the sensativity of the Envelope Follower At higher settings a larger ENV follower signal will be obtained LFO1 SPEED LFO2 SPEED These controls set the 2 LFO frequencies High Pass Filter RESOnance This control sets the resonance level A higher setting increases the intensity of the resonance At very high settings it is possible to self oscillate the filter CV1 LEVEL This control sets the amount the CV source selected via the switch will modulate the HPF cut off frequency The source switch has 3 options LFO1 up Off no signal centre PEDAL down LFO1 LFO1 is used as the source center no signal is routed no modulation effect PEDAL if a CV pedal is being used this is the source CV2 LEVEL This control sets the amount the CV source selected via the switch will modulate the HPF cut off frequency When this switch is pulled out the CV source is inverted so the positive signal is flipped over This is ideal so you can have for example the LPF sweep ing up whilst the HPF is sweeping down The source switch has 3 options Env up Off no signal centre LFO2 down ENV The ENV follower is the source center no signal is routed no modula
8. f frequency As the setting is increased more and more higher frequencies are filtered out AUDIO IN LEVEL This control sets the audio in level to the LPF following the output of the HPF This control must not be at zero to hear some effect In normal use leave it at maximum Use it to adjust the audio in level when using the LPF Audio In socket on the rear panel VCA Bypass Switch The filter effects can be switch in IN or out BYPassed This allows you to compare the unprocess input signal and the final processed signal for comparison IN switch up The effect is switch IN The signal at the output socket is the processed signal BYPass switch down The input signal is directly routed to the output signal and the filters have no effect The processor is literally bypassed To hear any effect of the filters VCA the switch must be at the IN position CV1 2 LEVEL This control sets the amount the CV1 2 sources selected via the switches will modu late the VCA level The CV1 source switch has 3 options ENV up Off no signal centre LFO1 down ENV The ENV follower is the source center no signal is routed no modulation effect THRU The VCA is held open at a level near full volume The CV2 source switch has 3 options LFO2 up Off no signal centre inverted LFO2 down LFO2 LFO2 is used as the source center no signal is routed no modulation effect LFO2 LFO2 is inverted and used as the source To hear any processed
9. mber this is an analgue effect based on a vary old discrete circuit so some colouration of even an uneffected sound is possible Play around with the other controls for nice filter effects With digital effects there are a wide range of presets You switch the unit on and will instantly be wooed by the stunning DSP effects Analogue effects units do not have presets Depending where the knobs are set to you may switch the unit on and get a very dull and uninspiring sound The FC can produce a wide range of filter effects most are fantastic but some you may not like You will need to play around with it for a while till you learn how to get the best out of it As you become familiar with the unit you will soon find out the best settings for your tastes Block Diagram daads dads 034 1 34 TON VIEL Gnral LAO 2037 LAG 10471 oO E E gt 3 2 2 DO ol gt F 5 gt AS I PS 28 3 23882 55 852 E a d WwW m a U F d3 E 5 ul w 3 Y 2 LAS LY SANI o i 6 Tite Tad i 21 1 3 33430 41 5 5 rings de 3 1 SANS SSvdAg Ygl Mi aN 4317113 ssvi SSWd MOT HOIH de OC OG am 1 31311 1 1 INTOA YEA AUDIO IN LFF AUDIO OUT RESONANCE CUT OFF LPF AUDIO IN HPF AUDIO OUT CUT OFF RESONANC ANALOGUE S
10. nterparts Apllications an extra effects module for modular synthesisers versatile analogue studio effects unit live use for DJs and bands bringing life to dull sounds making digital sounds more analogue guitar effects unit many more Any audio input can be used synthesiser sampler microphone guitar mixer effects send drum machine bass guitar CD player DJ mix ing decks anything Safety Instructions Please read carefully before using Only use the recommended power adaptor 15V AC 500mA Never handle the adaptor with wet hands Never excessivly bend the adaptor cable or get it trapped or place heavy objects on it If the adaptor cable becomes damaged replace the adaptor Ensure the unit is disconnected from the mains before moving or cleaning Always disconnect the unit from the mains if there is lightning in your area Ensure the unit is on a stable surface and never place heavy objects on top of it Never allow young children to operate the unit or adaptor Do not use excessive force when using the controls or inserting cables to the connec tors The Unit should not be operated in the rain or near water and should not be exposed to moisture If the unit is brought from a cold environment to a warm one the unit should be left to reach the ambient temperature This is to allow any possible condensation moisture inside the unit to evaporate Although any built up moisture will not
11. s so it is possibly to filter out all the signal The controls are unrestricted to allow maximum flexibility Filtered Coffee user manual part of the Phobos range by Analogue Solutions web www analoguesolutions com email fec analoguesolutions com tel fax 44 0 1384 35 36 94 post 56 kingsley road kingswinford dy6 9rx uk
12. signal at the output socket the VCA must be active by applying CV The CV 1 2 LEVEL control must be used in conjunction with the CV source switched OUTPUT VOLUME This control sets the final main output level CV Signal Inverters HPF CV Level 2 LPF CV Level 1 and LPF CV Level 2 all have built in push pull on off switched When the knob is pulled out the CV signal is inverterd up side down This is a useful feature for when you want the LPF and HPF sweeping in opposite directsion when using the same CV source For example if LFO2 is the source for CV modulation of the 2 filters if the LPF CV Level knob is pulled out then as the HPF sweeps up the LPF will sweep down E Rear Panel dn E Connectors as view from the rear right to left The Filtered Coffee J provides un unusually high number of connection sockets more commonly associated with modular synthesisers The maximum amount of connec tivity space allowing has been supplied for maximum flexibility zs DE POWER IN This unit requires a 15 volt AC signal not DC 500mA minimum lo Although the unit requires AC the type of plug required is called a 2 1mm 22 DC plug 2 15 All jack sockets are 6 35mm mono except the Pedal Input socket which is a stereo type PEDAL CY OUT SIGNAL IN i Plug your audio in here The input will take line level and guitar level e signals without the need for pre amp A mic source may need to be pre
13. tion effect LFO2 LFO2 is used as the source CUTOFF This control sets the cut off frequency As the setting is increased more and more lower frequencies are filtered out Low Pass Filter RESOnance This control sets the resonance level A higher setting increases the intensity of the resonance At very high settings it is possible to self oscillate the filter CV1 LEVEL This control sets the amount the the CV sources selected via the switch will modulate the HPF cut off frequency When this switch is pulled out the CV source is inverted so the positive signal is flipped over This is ideal so you can have for example the LPF sweep ing up whilst the HPF is sweeping down The source switch has 3 options LFO1 up Off no signal centre PEDAL down LFO1 LFO1 is used as the source center no signal is routed no modulation effect PEDAL if a CV pedal is being used this is the source CV2 LEVEL This control sets the amount the CV source selected via the switch will modulate the HPF cut off frequency When this switch is pulled out the CV source is inverted so the positive signal is flipped over This is ideal so you can have for example the LPF sweep ing up whilst the HPF is sweeping down The source switch has 3 options ENV up Off no signal centre LFO2 down ENV The ENV follower is the source center no signal is routed no modulation effect LFO2 LFO2 is used as the source CUTOFF This control sets the cut of
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