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KOMA Elektronik BD101 User Manual

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1. effect is now active Play Now go nuts If necessary adjust the INPUT GAIN slider control to match the levels of the processed signal and the bypassed signal The most predictable results will come from playing single note riffs or melodies This is especially true when the DELAY BLEND slider control is set to WET You can use the Motion Controller to adjust the DELAY TIME GATE SPEED GATE AMOUNT and CYCLE Be sure to read through the Control Voltage Theory section to understand all CV features and their usage FEATURES fo SPEED GAIE AMOUNT TIME DELAY CIALE 4e e6 4e 6 he 6 i O P i D i Qe a Oe 10 min e max Oe 10 GATE SHAPE GATE RANGE A N eo LOW HIGH L GATE MID Q 100 SPEED ON OFF DRY WET INPUT GAIN DELAY BLEND Fig 1 Frontpanel Features Input Gain The INPUT GAIN slider of the BD101 provides you with and adjustable gain for boosting low level input signals By sliding from left to right you can boost your signal from zero gain to 100 gain 0 to 20dB Analog Gate Amplitude Modulation When the audio signal plugged into the AUDIO INPUT jack goes to into the BD101 it firstly arrives at the analog gate amplitude modulation section where you can choose in which way you want to prepare your signal The SPEED knob sets the speed of the LFO low frequency oscillator that controls the amplitude modulation If turned fully counter clockwise the speed is slowest if turned fully clockwise you select th
2. signal control voltage which can be patched up with any CV receptive socket on the KOMA pedals and f i on your modular system By moving your hand over the sensor you can control the parameters of the CV input you patched it up to With the trimmer on the back of the pedal it says SENSOR you can change the sensitivity of the motion controller For more information about Control Voltage check out the section Control Voltage Theory of this manual ControL VorracE THEORY The concept of control voltage CV is not hard to understand Instead of turning a knob on your pedal you simply connect a voltage the control voltage to the corresponding CV input that does the job for you So for example if you want to have quickly varying GATE AMOUNT you dont have to turn that knob all the time back and forth fast until your fingers fall off but simply connect an alternating CV to the AMOUNT CV input You can take control signals from any source for controlling the inputs of the BD101 All of the CV inputs theoretically accept control voltages from 100V to 100V though a range from 5V 12V 15V to 5V 12V 15V is more common and usable Since the BD101 is running on a 9V power supply you might wonder how you can use a signal as large as 15V to 15V The answer is simple We provide you with a trimmer for each CV input on the backside of the panel SENSOR SPEED DLY TIME AMOUNT CYCLE CV OUT CV IN CV IN CV IN CV IN _ QV DC INP
3. ANGE e ow Hch EFFECT M ON OFF DRY WET DELAY BLEND 1 TIME me BELAY er max GATE RANGE ow HIGH EFFECT a ON OFF DRY WET DELAY BLEND Completely ripped apart SPEED ep GALE any AMOUNT TIME me BELAY ey CYCLE 4o 6 he 6 le 6 Q i O B i O i g 10 Oe 10 min max Oe 10 GATE SHAPE GATE RANGE A N e e D HIGH GATE EFFECT Q 100 SPEED ON OFF DRY INPUT GAIN DELAY BLEND Fast gate short delay o SPEED p SAIE AMOUNT TIME me PELNY CYCLE he 6 he T i amp i OQ 6 s 10 g9 10 max GATE SHAPE GATE RANGE A N e e Low HIGH GATE EFFECT MID 100 SPEED ON OFF DRY INPUT GAIN DELAY BLEND Karplus 1 Ra GAIE in fit me DELAY Pa GATE SHAPE GATE RANGE e oH te GATE EFFECT 0 QO SPEED ON OFF DRY WET INPUT GAIN DELAY BLEND TECHNICAL SPECIFICATIONS General Case Powder coated aluminium casing silkscreened text and wooden sidepanels Dimensions 23 cm x 15 cm x 5 cm Lx WxH 9 x 6 x2 Lx Wx H Net Weight 800 gr 1 7 lb Shipping Weight 1 kg 3 0 lb including power adapter and instruction manual Power requirements 9V DC power adapter 500mA min center polarity negative only use the KOMA adapter shipped with the pedal Features INPUT GAIN slide control which allows the user to set the input gain of the plugged in instrument or line audio signal 0 to 20dB variable gain DELAY BLEND slide control to set the amount of processed delay signal within your ove
4. KOMA Elektronik will ship and insure your product to your European USA address free of charge How to initiate your warranty Please initiate your warranty online at www koma elektronik com Click Product Registration in the Support menu to register your product If you do not have web access fill out all the information on a letter and mail to KOMA Elektronik VOF Postfach 610383 10926 Berlin Germany
5. UT So whenever you notice a significant distortion or clipping in your control signal waveform or strange CV behavior simply turn the trimpot clockwise away from the word CV until you hear your desired result By turning it clockwise you attenuate the incoming CV signal Fully clockwise means that the incoming CV signal is completely gone whereas fully counter clockwise means that the incoming CV signal is arriving to the circuit unattenuated In addition to that you can set an offset voltage to your control voltage to adjust the CV signal to your needs The offset voltage is set by the corresponding knob on the front panel There s also a distinction between bipolar and unipolar signal This is best explained with a few pictures Bipolar CV Signals V 9 Bias Voltage N set by knob NN GND 0V GND 0V V _ Original CV Signal CV Signal inside the BD101 So what happens The incoming CV signal is shifted around the voltage that you select with the corresponding knob Example if you insert a 5V to 5V sine wave into the CYCLE CV jack you will get the following results while turning the CYCLE knob Bipolar CV Signals set by knob GND 0V GND 0V 9V 9V Bias Voltage set by knob Bias Voltage CV Signal inside the BD101 CV Signal inside the BD101 Low Bias Voltage High Bias Voltage A similar thing happens to unipolar CV signals Their point of origin OV is shifted by the amount set with the corr
6. a KOMA ELEKTRONIK KOMA Elektronik BD101 Analog Gate Amplitude Modulation and Delay USER MANUAL version 1 0 TABLE OF CONTENTS 3 Introduction 4 Getting Started 9 Features 7 Control Voltage Theory 9 Patchbay 11 Basic Settings and Examples 13 Technical Specifications 15 Warranty WARNING Ony use the KOMA Elektronik power supply shipped with the BD101 Power sources rated with voltages greater than 9V DC and or wrong polarity may cause damage or malfunction to the BD101 s circuitry and will void the warranty INTRODUCTION Analog delays have been a specialty in musicians effect artillery ever since Being loved for their organic physical sounds these circuits deserve special attention The way analog delays work is very similar to the old fashioned way of extinguishing a fire by means of a bucket bridge transferring water from the water source to the fire therefor called bucket bridge delays BBD In these BBD effects the sound is literally poured from one transistor into the next one This process is clocked by a special bi phase clock causing the first transistor to pass the signal to the second one exactly at the moment the second transistor just finished doing that to the third transistor and so on Now imagine this procedure 2048 times in a row and you have successfully delayed your signal by simple analog means Gating and especially amplitude modulation on the other hand are maybe one of the olde
7. e highest speed Together with the RANGE switch you can choose between three different speed ranges With the gate SHAPE switch you can set the shape of the amplitude modulation gate selecting either ramp square or sawtooth shape The amplitude modulation gate will follow the selected envelope After having selected a speed range with a respective clock speed and a gate shape you can choose the impact of the gate amplitude modulation section on your sound by turning the AMOUNT knob When turned fully counter clockwise your input signal isnt affected at all by the LFO The more you turn the knob in clockwise direction the more the LFO affects your signal going from a slight tremolo to severe amplitude modulation to completely gating your signal Analog Delay Section After passing through the amplitude modulation gate section your signal flows into the analog delay BBD section of the pedal You have two main controls to influence the processing of your sound here First you can select the delay time with the TIME knob Turning it fully counter clockwise will give you a super short delay of 1ms Turning it more clockwise will give you longer delay times At around 100ms you will notice slight degradation of the overall sound comparable to digital bitcrushing effects The further you turn the knob clockwise the harsher noisier and more hearable this effect will become This pseudo bitcrushing effect is a side effect of clocking the BBD c
8. esponding knob In other words You add the voltage of your knob to the voltage of you incoming unipolar CV signal Unipolar CV Signals V 9V TT Bias Voltage S r set by knob GND OV rp GND 0V Original CV Signal CV Signal inside the BD101 Now that you understood the idea of control voltage lets go on and see what the patchbay of the BD101 can offer PATCHBAY Q JO 1O A AUDIO CYCLE AUDIO v v v z A SPEED AMOUNT EXI GATE DLY TIME SENSOR The patchbay consists of ten 1 4 jack sockets which you can use for receiving and sending various audio or control voltage signals Blank arrows mark CV inputs outputs black arrows mark audio inputs outputs If the arrow is pointing towards the jack socket it shows you that this is an output if the arrow is pointing away from the jack socket it is an input All the CV inputs in the KOMA Elektronik pedals accept bi polar control voltages Since the pedal runs on 9V every time you plug in a control voltage to one of the CV accepting inputs the respective knob e g SPEED knob or SPEED IN CV input determines the offset voltage of your CV input signal Let s start from right to left in the upper row AUDIO IN audio input This is the main audio input of the BD101 The sound source plugged in here will go trough the whole effect section 1O D z CYCLE IN audio input The sound source plugged in here will arrive at the feedback inser
9. f the pedal All patchbay inputs and outputs are mono 1 4 phone jacks WARRANTY KOMA Elektronik warrants its products to be free of defects in materials workmanship and conforming to specifications at the time of shipment for a period of two years from the date of purchase During the warranty period any defective products will be repaired or replaced at KOMA Elektronik s option on a return to factory basis This warranty covers defects that KOMA Elektronik determines are no fault of the user Returning Your Product You must obtain prior approval in the form of an RMA Return Material Authorization number from KOMA Elektronik before returning any product Click Service in the Support menu on the KOMA Elektronik website www koma elektronik com to request the RMA number All products must be packed carefully and shipped with the KOMA Elektronik supplied power adapter Sorry the warranty will not be honored if the product is not properly packed Once you have received the RMA and carefully packed your product ship the product to KOMA Elektronik with transportation and insurance charges paid and include your return shipping address What will we do Once received we will examine the product for any obvious signs of user abuse or damage as a result of transport If the product has been abused damaged in transit or is out of warranty we will contact you with an estimate of the repair cost Warranty work will be performed and
10. hips slower than it is actually intended to be see introductory notes about analog delay chips on page 3 Also be aware of the fact that the clock of the BBD chip used in the BD101 will appear as a function of your input signal sitting on top of your waves We don t consider this as a bug or malfunction but think that whoever is brave enough to turn the TIME knob further than 100ms will either not care about this side effect or love its sound the way we do at KOMA Elektronik The second control in the delay section is the knob labeled CYCLE which controls the amount of delayed and amplitude modulated signal flowing back into the delay circuit therefor representing the amount of feedback in the delay circuit Delay Blend The last feature influencing your sound in the signal processing chain is the DELAY BLEND slider You can choose how much of the delay signal is applied to your amplitude modulated input signal The slider is an equal power panning slider which means that you go from completely dry no delay signal at all to completely wet only delayed signal with no gain loss over the whole range of the slider Sensor One of the features on your BD101 you wont find in any other pedal is the possibility to control the features of the pedals with the on board motion controller Since its working with infra red LEDs we call it the SENSOR The motion controller can be used in many different ways Technically speaking it emits a CV
11. ired to be modulated feature Patchbay AUDIO IN plug your sound source here AUDIO OUT listen to what you created here CYCLE OUT you can grab your processed signal here before it is being fed back into the circuit here By sending this signal into external effect units e g filters or EQs you can change the sound being fed back into the pedal through plugging your externally processed sound into CYCLE IN CYCLE IN by plugging an externally processed sound into this jack you break the internal CYCLE circuit thus being able to change the feedback sound in any way you desire CYCLE IN CV input to control the amount of internally or externally processed signal being fed back into the circuit SPEED CV input to control the speed of the gate AMOUNT CV input to control the amount of gate being applied to the plugged in signal EXT GATE CV input that allows you to control the gate by external gate and or CV signals DLY TIME CV input to set the delay time SENSOR CV output of the onboard motion sensor for usage with CV inputs on the pedal other KOMA Elektronik pedals or other voltage controlled devices Backpanel DC POWER INPUT jack accepts standard 9 volt power adaptors center pin negative 500mA min KOMA Elektronik power adaptor included CV TRIMMERS The sensitivity of the CV inputs and outputs as well as the sensitivity of the motion sensor can be adjusted with attenuators which are mounted on the back o
12. ntries Take the small knobs from the bag and gently push them in the holes of the backpanel of the BD101 Please do this carefully You can always take them out again when you transport the pedal this to make sure the attenuators on the back dont break down When the pedal is shipped all the attenuators are turned fully counter clockwise and the trimmer for the SENSOR is set fully clockwise Connect it Be sure your amp is turned off then connect your instrument to the BD101 by using the AUDIO INPUT on the upper right of the patchbay Connect the AUDIO OUT on the upper left of the patchbay to your amp To connect the Motion Controller the built in expression function plug in a 4 inch jack cable from SENSOR to DLY TIME CV on the patch bay Set up the BD101 Amp Set all the controls of the BD101 as in g 7 see next page Power up Bypass Connect the BD101 power supply to the BD101 DC input on the backside of the pedal The GATE SPEED indicator will light up periodically When you press the bypass switch the EFFECT ON OFF led will light up this means the effect is turned ON Please wait with playing for 5 seconds so the unit can warm itself up Turn your amp on now as well set levels Turn on your amplifier Make sure the EFFECT ON OFF indicator is OFF Play your instrument and adjust the volume of the amplifier so it is at a comfortable level Press the Bypass switch and the EFFECT ON OFF indicator will turn on green which means the
13. rall sound from completely dry to completely wet GATE SPEED rotary control to adjust the speed of the gate GATE AMOUNT rotary control which adjusts the amount of the gate signal applied to the audio input signal going from not influenced at all to amplitude modulated to completely gated CYCLE rotary control to adjust the amount of processed signal fed back into the signal chain Going from no signal being fed back to usual feedback sounds creating overtones and or karplus effects to going completely nuts with feedback DELAY TIME rotary control to set the delay time Please note that the delay chip used in this circuit was never meant to go anywhere near the settings between 6 10 where serious bit crushing like effects and other odd sounds start to appear GATE SHAPE 3 pole toggle switch to switch between the 3 different shapes of the gate ramp pulse and sawtooth GATE RANGE 3 pole toggle switch to switch between high mid or low speed range for the gate GATE SPEED LED indicates the speed and shape of the gate clock EFFECT ON LED indicates if the effect is switched on or bypass FOOTSWITCH Heavy duty Alpha footswitch Turning the effect on or off 2 IR EMITTERS 1 IR RECEIVER calculates the distance between an object and the pedal and generates a CV signal according to the measured distance The CV output of this sensor appears as a CV output on the patchbay from where you can route it to the CV input of your des
14. st tools in the musicians repertoire to express dynamics and tension in music with the tremolo of a violin possibly being the most classic example Now the KOMA Elektronik BD101 brings these great tools together and takes it one step further The bi phase clock of the BBD circuit on the BD101 can go into ranges never intended by the inventors of these chips allowing you to go from super short delay pulses to enormously cut up soundscapes If you clock the BBD transistors in such a slow speed that the first transistor actually misses a part of the incoming sound you are able to rip the incoming signal completely apart At times it might even sound like digital bit crushing Because the gating amplitude modulation circuit is placed before the analog delay it allows you to cut away portions of your sound before the signal reaches the delay That gives you the possibility to put focus on certain parts of your sound e g a certain snaredrum sound in your drumloop OK these were the basics now get your pedal go to the next page and make some noise 2 3 4 9 6 GETTING STARTED Unpack your machine The package comes with the BD101 pedal a 9VDC 500mA tip negative power supply a small bag with 5 knobs and this manual Save the box and packing material in case you ever need to ship your pedal Make sure that the power supply is rated for the line voltage of your country 120 VAC for the USA 220 VAC for Europe or most other cou
15. t point of the BD101 delay section You will mostly use this insert point together with the CYCLE OUT to change the behavior sound of your feedback cycle This is a switching jack which means that you break up the internal feedback circuit by plugging a sound source into this jack fO CYCLE IN CV input This CV input accepts control voltages from 0 9V affecting the amount of feedback in the delay section When you insert a control voltage into this input the CYCLE knob determines the offset voltage see Control Voltage Theory section 1O D lt OD OD T CYCLE OUT audio output This output provides you with the audio signal after the delay section before the DELAY BLEND slider If you send this output to an external effect like an EQ Filter another delay unit etc and plug the processed signal back into the CYCLE IN audio input you can control the sound of the feedback The volume of this signal is determined by the setting of the CYCLE knob AUDIO OUT audio output The main audio output of the BD101 plug your amplifier here enjoy Left to right lower patchbay row SPEED CV input The SPEED CV input controls the speed of the amplitude modulation gate LFO therefor plugging a CV signal into this jack will change the speed of the LFO When you insert a control voltage into this input the SPEED knob determines the offset voltage see Control Voltage Theory section pp xxx AMOUNT CV input The AMOUNT CV inp
16. ut controls the amount of amplitude modulation gate applied to your incoming audio signal When you insert a control voltage into this input the AMOUNT knob determines the offset voltage see Control Voltage Theory section EXT GATE CV input The EXT GATE CV input goes directly to the VCA controlling the amount of the amplitude modulation gate bypassing the SPEED and AMOUNT knobs and CVs which means that any appropriate signal applied to this input will result in an according amplitude modulation of your incoming signal DLY TIME CV input The DLY TIME CV input controls the delay time of the delay circuit in the BD101 When you insert a control voltage into this input the TIME knob determines the offset voltage see Control Voltage Theory section SENSOR CV output This is the CV output of the infrared motion sensor The closer you move something towards the sensor the higher the CV raises You can set the sensitivity of the sensor with a small trimmer on the background called Sensor The sensor output is 0 9V OO D D BE O D gt z DLY TIME A SENSOR Chop your sound apart L GAIE a SPEED _ f ue 10 Qe 10 GATE SHAPE er e GATE 100 SPEED INPUT GAIN Classic analog delay L GAIE a SPEED ee O f 0 10 Qe 10 GATE SHAPE 1 r L GATE 100 SPEED C INPUT GAIN Basic SETTINGS AND EXAMPLES TIME me BELAY nae Max GATE R

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