Corsynth C105 VC Noise/Lo-Fi MKII User manual

C105 VC NoISE / Lo-FI MKII
USER MANUAL
C105
VC NOISE / LO-FI MKII
OUT
LO-FI IN
HPF OUT
SF MOD 1
SF MOD 2
VCF CV
CLOCK IN
CLOCK OUT
HIGH
LOW
NOISE
LO-FI
HP VCF
L-F H-F
SAMPLE FREQ
MIN MAX
SF MOD 2
-10 +10

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The C105 VC Noise / Lo-Fi Machine MKII is a voltage controlled
analog sample rate reducer and a VC Nosie generator. This new
MKII version expands the modules possibilities with new
features that allows this module to be used in other ways not
possible with the previous version. Now the C105 MKII can be
used like a traditional sample and hold , a voltage controlled
clock generator , a random gate / trigger generator or a 12 db
VC High pass lter and even as a square wave VCO.
The C105 new characteristics are :
- The internal clock has a new LOW mode that allows to use it as
a traditional sample and hold.
- The module now accepts external clock signals, so it can be
synced to other modules.
- New clock output. Now the C105 can be used as a master
clock.
- The passive rst order HPF has been replaced for a voltage
controlled second order HPF.
The C105 is based on a Sample and Hold with an internal clock
that goes from 0,2Hz up to 44KHz and it can be voltage
controlled. This wide frequency range and two FM inputs ( one
with a reversible attenuator ) allow to create subtle or harsh
digital and aliassing eects.
The internal noise generator in combination with the S&H
make a perfect way to create pitched noises, random voltages,
sound FXs etc.
In addition, there is also a 12db VC controlled high pass lter
with an independent output.
C105 main characteristics
- Internal white noise generator.
- Voltage controlled clock with two ranges :
* Low : 0,2Hz to 125Hz
* High : 125Hz to 44KHz
- Clock input
- Clock Output
- 12db VC High Pass lter.
C105
VC NOISE / LO-FI MKII
OUT
LO-FI IN
HPF OUT
SF MOD 1
SF MOD 2
VCF CV
CLOCK IN
CLOCK OUT
HIGH
LOW
NOISE
LO-FI
HP VCF
L-F H-F
SAMPLE FREQ
MIN MAX
SF MOD 2
-10 +10
C105 VC NoIse / Lo-FI MKII

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C105
VC NOISE / LO-FI MKII
OUT
LO-FI IN
HPF OUT
SF MOD 1
SF MOD 2
VCF CV
CLOCK IN
CLOCK OUT
HIGH
LOW
NOISE
LO-FI
HP VCF
L-F H-F
SAMPLE FREQ
MIN MAX
SF MOD 2
-10 +10
Sample frequency
range switch
Sample frequency
modulation 2 level
Sample frequency
modulation 2 input
Sample frequency
modulation 1 input
High Pass Filter
cuto frequency
Sample clock output
Sample clock Input
LO-FI input
Cuto frequency
CV input
C105 VC NOISE / LO-FI MKII
Front Panel Description
Ouput
High pass lter ouput
Sample input
selector switch
Sample frequency
Clock frequency LED

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CONTROL DESCRIPTION
SAMPLE FREQ
This control sets the clock frequency for the internal sample and
hold circuit. The internal clock has two frequency ranges that can
be selected using the range switch.
The frequency ranges are:
- HIGH : from 200Hz up to 44KHz
- LOW : from 0.2Hz to 149Hz
CLOCK LED
The led turn on every time a new clock pulse is received. It will
follow the internal clock unless an external clock signal is patched
to the CLOCK IN . The on time is determined by the on time of the
clock signal.
INPUT SELECTOR SWITCH
This switch selects the signal to be sampled by the internal Sample
and Hold. The two options available are :
NOISE : internal white noise generator.
LO-FI : LO-FI signal input.
SF MOD 2
Sample frequency modulation input 2. The SF MOD 2 potentiome-
ter sets the amount of modulation. This potentiometter is a rever-
sible attenuator, in center position there is no modulation , to the
right attenuates the input signal and to the left attenuates an
inverts the input signal. The input allow positive and negative
signals which together with the value set by the SAMPLE FREQ
potentiometer, the SF MOD 1 INPUT and the RANGE SWITCH sets
the nal value of the clock frequency for the internal sample and
hold circuit.
HIGH
LOW
SAMPLE FREQ
MIN MAX
NOISE
LO-FI
SF MOD 2
SF MOD 2
-10 +10

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SF MOD 1
Sample frequency modulation input 1. The input allow positive
and negative signals which together with the value set by the
SAMPLE FREQ potentiometer, the SF MOD 2 and the RANGE
SWITCH sets the nal value of the clock frequency for the internal
sample and hold circuit.
HP VCF
This control sets the cuto frequency of the high pass lter. The
frequencies below the cuto frequency are attenuated at a rate of
12 db per octave.
SF MOD 1
HP VCF
L-F H-F
CLOCK IN
Clock input. If a signal is patched to this input it will be used as
clock for the internal sample and hold. Any signal with a possitive
level higher 3V than can be used as clock input .
CLOCK IN
CLOCK OUT
CLOCK OUT
Clock output. If nothing is patched to the CLOCK IN the output is
the internal clock, a square wave from 0 to 10V. In case there is a
signal patched to CLOCK IN the output will be a pulse wave from
0 to 10V with a ON period equal to the time that the input signal
is above 3V.
VCF CV
High pass lter cuto modulation input. The input allow positive
and negative signals which together with the value set by the HP
VCF knob sets the nal value of the cuto frequency.
VCF CV

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HPF OUT
High pass lter out. The lter’s input signal is the output of the
sample and hold circuit.
HPF OUT
LO-FI IN
Input signal to be sampled. If nothing is patched to this input, the
internal white noise generator is connected to it.
LO-FI IN
OUT
OUT
Output of the internal sample and hold circuit.

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WHITE NOISE
GENERATOR
LO-FI SIGNAL
INPUT OUTPUT
HI-PASS
FILTER
SF MOD1
SF MOD 2
∑
IN
OUT
SAMPLE
&
HOLD
CLOCK OUTCLOCK IN
HPF OUT
Audio signal Control signal Non permanent conection
BLOCK DIAGRAM
INTERNAL CLOCK
HP CV
EXTERNAL CLOCK
HIGH
LOW
CLOCK OUT
∑

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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@45mA , -15V@44mA
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
Clock frequency
Noise level
HP lter cuto

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MODULAR LEVEL
MIN MAX
MODULAR SYNTHS