WARRANTY
KOMA Elektronik warrants its products to be free of defects in materials / work-
manship 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 defec-
tive products will be repaired or replaced at KOMA Elektronik’s option on a re-
turn-to-factory basis. This warranty covers defects that KOMA Elektronik deter-
mines are no fault of the user.
Returning your product?
You must obtain prior approval in the form of a RMA (Return Material Authorization)
number from KOMA Elektronik before returning any product.
Email us at [email protected] 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#, write it on the box
together with the word: WARENRUCKSENDUNG and carefully pack 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 KOMA Elektronik will ship and insure
your product to your address free of charge
How to initiate your warranty?
Please initiate your warranty online by sending an email to:
[email protected]
CV THEORY
The concept of control voltage (CV) is not difficult 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. For example, if you
want to have quickly varying GATE AMOUNT, you don’t have to turn that knob back
and forth rapidly 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.
BIPOLAR CV SIGNALS
The incoming bipolar CV signal is shifted around the voltage that you select with
the corresponding knob. Example: if you insert a -5V to a +5V sine wave into the
CYCLE CV jack you will get the following results while turning the CYCLE knob:
BIPOLAR CV SIGNALS
A similar thing happens to unipolar CV signals: their point of origin (0V) is shifted
by the amount set with the corresponding knob. In other words: you add the volt-
age of your knob to the voltage of your incoming unipolar CV signal.
UNIPOLAR CV SIGNALS
TECHNICAL SPECS
TIPS & TRICKS
FEATURES
BASIC SETTINGS
When the audio signal is plugged into the AUDIO INPUT jack, it first arrives at the
analog gate / amplitude modulation section where you can choose how you want
to prepare your signal.
In the DELAY section, the further you turn the TIME knob clockwise the harsher,
noisier and more audible the effect will become. This pseudo-bit crushing effect
is a side effect of clocking the BBD chips slower than it is actually intended to
be (see introductory notes about analog delay chips). 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 as we do
at KOMA Elektronik
One of the features on your BD101 you won’t find in any other pedal is the pos-
sibility to control the features of the pedals with the on board motion control-
ler. Since it works with infrared LEDs we call it the SENSOR. The motion controller
can be used in many different ways. For more information about Control Voltage,
check out the section Control Voltage Theory of this manual.
Linear PSU
To ensure the best sound quality we recommend using a linear power supply at
all times. Because the sensor circuit needs a lot of current, we recommend a
minimum of 500mA. Since it’s a linear power supply, not switching, make sure the
power supply is rated for the line voltage of your country: 120 VAC for the USA, 220
VAC for Europe and most other countries.
Lowpass filter
Inside the pedal you will find the option to activate a low pass filter after the de-
lay section to make it more suitable for low impedance instruments (electric gui-
tars etc.). Unscrew the 4 screws on the bottom, and you will see 2 green printed
circuit boards (PCBs). On the PCB that contains the potentiometers and sliders,
you will find a text on the left that reads “Lowpass Filter” with a line pointing to-
wards two pins. Put the little jumper that was shipped with the BD101 onto the 2
pins to activate the low pass filter. We like it crazy, thats why we left the jumper
off, but it will improve the overall sound of the BD101 when used with a guitar.
How to clean your BD101
The BD101’s body is white, which means the chance of it becoming dirty after a
show or intense studio session is high. To clean the pedal, use some pure clean-
ing alcohol (e.g. isopropyl). Make sure you use it safely, that stuff is pretty flam-
mable. Also make sure there is no solvent mixed in, this will remove the screen
printing on the pedal.
Casing
Powder coated aluminum casing,
silk screened text and wooden
side panels.
Dimensions
23 cm x 15 cm x 5 cm (L x W x H) /
9" x 6" x 2" (L x W x H).
Net. Weight
850 gr / 1.8 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).
FAST GATE, SHORT DELAY
Add a short echo to your now staccato sound.
METALLIC FLANGER
With shorter delay times, flanger
and chorus like sounds can be achieved.
CHOPPED SOUND
The full gate chops the sound according to the speed set.
KARPLUS
Input a staccato sound to create a plucked string effect.
CLASSIC ANALOG DELAY
Get “normal” type of delay sounds too!
BITCRUSHER
The longer delay time creates a bit crushing type of effect.
COMPLETELY RIPPED APART
This stronger gate combined with being fully wet really mangles the sound.
RHYTHMIC ECHO
The gate and delay time work together
to create some rhythmic effects.
FEEDBACK OSCILLATOR
Turn up cycle and use the BD101 as an evolving noise source,
just watch your volume! Take the SENSOR output
into the DLY TIME CV input to control the pitch.
Graphics by: www.rabadaun.com
