Corsynth DR-01 BASS DRUM User manual

USER MANUAL
dr-01 bass drum

dr-01 bass drum
1
HTTP://WWW.CORSYNTH.COM
The DR-01 is the rst of a new series of Corsynth modules
dedicated to analog drum synthesis and it’s also the rst
module of this kind commercially available in MU format.
Create a drum sounds from scratch using a modular
synthesizer is always time and resourcing consuming. With
the DR-01 you will save a lot of space, money and modules
that can be used for other purposes. The DR-01 has all you
need to create bass drums , toms a many other percussive
sounds in just one single space. And thanks to the Tune CV
input is even possible to use the DR-01 to create bass lines.
Punchy techno drums, industrial drums, drums of the rsts
analog drum machines, FM sounds... With the DR-01 is really
easy to get the sounds that you need at every moment. All
the parameters in the module have been carefully chosen to
be used in a drum synthesis context (envelope times,
oscillator frequencies, oscillator waveform etc ).
These are the DR-01 main features :
- A voltage controlled oscillator with dedicated CV input for
tuning.
- A voltage controlled timbre circuit.
- A dedicated tune modulation envelope.
-An amplitude envelope with three dierent settings for the
attack time.
It’s time to add drum sounds to your synth sequences! .
dr-01 bass drum

dr-01 bass drum
2
HTTP://WWW.CORSYNTH.COM
DR-01 Bass Drum
Front Panel
Tune CV input
Modulation envelope decay
Output indicator LED
Bass drum tunning
Trigger input
Timbre CV input
Bass drum output
Modulation envelope level
Bass drum decay
Timbre selector
(Soft / Medium / Harsh)
Bass drum attack selector
(Slow / Medium / Fast)

dr-01 bass drum
3
HTTP://WWW.CORSYNTH.COM
CONTROL DESCRIPTION
TUNE
This potentiometer sets the fundamental frequency of
the bass drum. The minimum frequency is 25Hz and the
maximum 250Hz
DECAY
This potentiometer sets the decay time of the bass drum.
It goes from 20 milliseconds up to 2 seconds.
TIMBRE
This switch selects the base timbre of the bass drum. The
timbre can be also modulated using the Timbre CV input.
SOFT (middle position): The output wave is a rounded
triangle wave with low harmonic content.
MEDium : The output wave is something between a trian-
gle and a square wave. Medium harmonic content.
HARSH : The output wave is almost a square wave with
high harmonic content. It creates a distorted and harsh
sounded bass drum
AT TACK
This switch selects how fast is the attack of the bass drum.
This allows to create soft or punchy drum sounds.
SLOW (middle position) : 2 ms
MEDium : 1.2 ms
FAST : 0.7 ms

dr-01 bass drum
4
HTTP://WWW.CORSYNTH.COM
MOD ENV
This potentiometer sets the amount of modulation enve-
lope that aects the bass drum fundamental frequency.
TUNE CV
This input allows to modulate the bass drum fundamen-
tal frequency. It has a response of approximately 1V/ Oct
DECAY
This potentiometer sets the decay of the modulation
envelope. It goes from 20 milliseconds up to 2 seconds.
TRIG IN
This input is used to trigger the bass drum. Any signal
with a positive voltage higher that 3.5V can be used.
TIMBRE CV
This inputs allows to modulate the timbre of the bass
drum.
BD OUT
Bass drum ouput

dr-01 bass drum
5
HTTP://WWW.CORSYNTH.COM
OSCILLATOR
MOD
MODULATION
ENVELOPE ( AD )
ENV
TUNE CV IN
TUNE
TIMBRE
TIMBRE CV
VCA
DECAY DECAY
AMPLITUDE
ENVELOPE ( AD )
AT TACK
TRIGGER IN
BASS DRUM OUT
AUDIO SIGNAL CONTROL SIGNAL
DR-01 BASS DRUM BLOCK DIAGRAM

dr-01 bass drum
6
HTTP://WWW.CORSYNTH.COM
Trimmers and power connectors
Module Format : 5U, MU format ( Synthesizers.com, Moog )
Module Width : 1 MU ( Moog unit )
Module Depth :52 mm ( 2,05 inches )
Power : +15V@18mA , -15V@18mA
Power connectors : Synthesizers.com , MOTM ( 4 pin )
TECHNICAL DATA
+15V+5V-15VN/C GND
Synthesizers.com
GND +15V-15V GND
MOTM
IMPORTANT !!!!
This module has two power connec-
tors (Synthesizers.com and MOTM).
Only one is needed to power the
module. (Synthesizers.com or MOTM).
Never connect both at the
same time.
Synthesizers.com
power connector
MOTM
power connector
Initial frequency

dr-01 bass drum
7
HTTP://WWW.CORSYNTH.COM
MODULAR LEVEL
MIN MAX
MODULAR SYNTHS