Used Erwik Musikelektronik Voltage Controlled Multimode Filter - 1 of 12

via CONTROL.

This appears to be the first one to be featured on the site. Apparently only 12 were ever manufacturered, however, Doepfer's A-107 is based on it.

[Side note: CONTROl is also having a holiday sale on new items. Enter HOLIDAY10 for 10% OFF. The Erwik Musikelektronik is used so it does not qualify. Just sharing for those interested.]

Details on the Erwik Musikelektronik Voltage Controlled Multimode Filter follow:

"Based on the filter used in the Oberheim Matrix 12 and Xpander.

This Matrix 12 filter is a limited edition module, with only 12 filters produced by Jesper Johansson (ERWIK) in Sweden. It was produced in the end of the 90s.

Features:

2 Audio inputs. 2 VCA´s adjusting the input signals (manual or with CV). Filter "cutoff" and "Q" controllable manual or with CV. 1 VCA controlling the output signal (manual or with CV). Filtertype can be selected manual or with trigger at input "UP" & "DOWN".

Software: Switching on your system you can choose between 4 different modes.

No button pressed - normal function.
Downbutton pressed - rotating filtertable.
Upbutton pressed - faster triggering/switching filtermode.
Both buttons pressed- rotating filtertable as well as faster triggering/swithing filtermode.
The display gives an indication of 'r' or 't' as well as both.

Filters:

1 pole Low
2 pole Low
3 pole Low
4 pole Low
1 pole High
2 pole High
3 pole High
2 pole Band
4 pole Band
2 pole Notch
3 pole Phase
2 pole High + 1 pole Low
3 pole High + 1 pole Low
2 pole Notch + 1 pole Low
3 pole Phase + 1 pole Low

Very limited edition (Only 12 manufactured worldwide)."

Moog Taurus 2 ~ Fooger Connection ~ Fujara ~ Strymon Cloudburst

video upload by Ebotronix

Moog Taurus 2
Mooger Fooger :
MF 101 Filter (2x)
MF 102 Ring Modulator
MF 103 Phaser (2x)
MF 105 Midi Murf
MF 107 Freqbox Oscillator (3x)
Minifooger Analog Effect MF Delay Bucket Brigade Time Repeater
Make Noise Morphagene (Fujara)
Doepfer R2m Ribbon Controller (2x), A 183-2 (2x), A 177-2 (2x)
Boss EV 30 Pedals (2x) , Roland EV 5
After Later Audio Ornament and Crime (Quantermain app ~ DorianScale)
Tunefish Modular CV Peaks (Master Clock), µVeils
Befaco ST Mixer
Strymon Cloudburst (2x)
28.10.2023
video # 2291

#FFS​ - February Filter Sweep pt 4 - mini synths, gadgets, modular

video by SynthAddict

"A simple FFS run-through of some mixed gear synth filters. Enjoy…

Included gear: Beat Squeezer with Mellotron lowpass, Behringer Neutron, Doepfer A-107 filter, Korg miniKP lowpass, Novation Bass Station II classic BS & acid (ladder) filter, OP-1 Nitro fx lowpass mode, OP-Z lowpass, Roland Boutique SH-01a lowpass, Roland SE-02 with EXT BOX - lowpass and drive, Zoom MS-70CDR comb filter (steppy)"

Update via SynthAddict:

"This is my last #FFS vid, and sure enough, I already got a claim on it.
Blocked countries: Cuba, Iran, North Korea, Syria."

Doepfer A-107 Multitype Morphing Filter

Note: Auction links are affiliate links for which the site may be compensated.

via this auction

"Module A-107 is a completely new voltage controlled filter that has available 36 filter types: different versions of low pass, high pass, band pass, notch, all pass and filters with new response curves that have no name up to now. The frequency response curves of the 36 filters available in the A-107 are shown in the graphics at the end of this page. The filters are organized in two groups of 18 filters each. The transition between different filter types within one group can be soft (morphing) or hard (switching).
The filter was inspired by the ERWIK Musikelektronik Multimode Filter, which is based on the filter used in the Oberheim Matrix 12 resp. Xpander (thanks to Jesper Erwik Johansson for his assistance and permission to use his idea in our A-107 module). The possibilities of the A-107 go far beyond these filter designs as a lot of new filter types are available and the transition between filters can be soft (morphing) or hard (switching) and the filters can be arranged in 64 different voltage controlled filter chains.

The transistion between the different filter types is controlled by two parameters:

Filter Step (marked Step at the front panel)

Morphing Time (marked Morph at the front panel)

For both parameters manual control, one CV input with attenuator and one CV input without attenuator are available.

The 36 filter types can be arranged in filter chains (resp. filter sequencer or filter orders) so that this sequence of filters is passed through while the control voltage changes from 0...+5V. Each chain consists of 32 steps. 64 filter chains can be programmed by the user and stored in the non-volatile memory of the module. The following controls are used to program the filter chains:

Step: button to address the desired step (1...32) within the filter chain in combination with the value encoder
Filter: button to select the filter number (1...36) that is assigned to the current step within the chain in combination with the value encoder
Chain: button to select one of the filter chains (1...64) in combination with the value encoder
Program: button to store the current filter chain in one of the non-volatile memories (1...64) in combination with the value encoder
Value: endless rotary encoder to change the parameter selected with the buttons
3 digit Display (the first digit indicates of the current value shows Step "S", Filter "F" or Chain "C", the second and third digit display the number)
Additionally a "clocked" mode is available. This means that the steps of the currently selected filter chain are selected one after another. Each positive transition of the Clock signal calls up the next filter of the chain (jack socket marked Step Clock). A positive trigger at the Step Reset input (jack socket marked Step Reset) resets to the first filter of the current filter chain. This allows e.g. to switch between the filters of the currently selected filter chain in sync with a sequencer.

Of course the standard VCF controls are available: manual filter frequency control, one CV input with attenuator and one CV input without attenuator.
In addition voltage controlled resonance with manual control, CV input with attenuator and CV control without attenuator are available. For the filters of the first group (1...18) self-oscillation is possible, the filters of the second group (19...36) do not feature self-oscillation.

On top of it a final VCA is available (even with manual control, CV input with attenuator and CV input without attenuator).

The filter design is 100% analog (CEM filter chip). Only the morphing control and memory managing is carried out by a microcontroller.

Remark: Because of technical reasons the transition between the two filter groups (1...18, resp. 19...36) cannot be carried out soft as capacitors have to be switched. Soft transition (i.e. morphing) is possible only within the filter group (i..e. within the filters 1...18 or 19...36). Switching between filters causes a "click" if the filters are from different groups.

For more detailed information please look at the English user's manual A107_man.pdf"

Doepfer A-107 Multitype Morphing Filter Eurorack Module

Note: Auction links are affiliate links for which the site may be compensated.

via this auction

"module a-107 is a completely new voltage controlled filter that has available 36 filter types: different versions of low pass, high pass, band pass, notch, all pass and filters with new response curves that have no name up to now. the frequency response curves of the 36 filters available in the a-107 are shown in the graphics at the end of this page. the filters are organized in two groups of 18 filters each. the transition between different filter types within one group can be soft (morphing) or hard (switching).

the filter was inspired by the erwik musikelektronik multimode filter, which is based on the filter used in the oberheim matrix 12 resp. xpander (thanks to jesper erwik johansson for his assistance and permission to use his idea in our a-107 module). the possibilities of the a-107 go far beyond these filter designs as a lot of new filter types are available and the transition between filters can be soft (morphing) or hard (switching) and the filters can be arranged in 64 different voltage controlled filter chains.

the transistion between the different filter types is controlled by two parameters:
* filter step (marked step at the front panel)
* morphing time (marked morph at the front panel)

CLICK FOR MORE »

4 voice polyphonic modular test - MCV24 and one A-107

"a test of a polyphonic modular patch using four VCOs but only one VCF/VCA, a Doepfer A-107 Multi-type Morphing Filter. I used an MCV24 MIDI/CV/Gate converter which allows for several polyphonic modes. Patch settings were altered during the recording. Accompanying sounds were added after the modular recording. All notes of the polyphonic chord were triggered at the same time, programmed in a sequencer."

Moog FreqBox MF-107 driven by a Doepfer Dark Energy

YouTube Uploaded by GruithuisenCityMan on Mar 3, 2012

"Very interesting sounds can be obtained by driving a Moog FreqBox MF-107 by a Doepfer Dark Energy.

DE audio output to FreqBox audio in
and
DE cv1 to FreqBox frequency in

SYNC ON or OFF"

modular - test 01

YouTube Uploaded by batchas on Apr 13, 2011

"Test with sequence from Doepfer MAQ16/3 to Malekko Oscillator running through Doepfer A-107 Multitype Morphing Filter and Tiptop Audio Z2040 LP-VCF filter."

Synth Shop Hieber-Lindberg, Munich, Germany

via cheater cheater:

"I thought your readers could be interested that there's
such a nice place in Munich for synths.. it's not exactly Five G but
then they don't have to fly to Japan for it.. :)

Hi guys,
Last Saturday I have visited the music shop Musikhaus Hieber-Lindberg
in Munich, Germany. I was tipped off by Florian, who said it could be
interesting. You can find their website at
http://www.hieber-lindberg.de (unfortunately only in German, but it's
easy to find your way around, and Google Translate works well)

The Shop

CLICK FOR MORE »

Cosmic waves of energy (MF102 & 107 + Dark Energy + Boss DD6 DD7 & SYB5)

YouTube via GruithuisenCityMan | July 18, 2010

"Hello ! My name is Frederic Gerchambeau. I have made this movie and this noisy dirty moogy drone. This drone has been made with a Moogerfooger MF-102, a Moogerfooger MF-107, a Doepfer Dark Energy, a Boss Bass Synthesizer SYB-5, a Boss Digital Delay DD-6 and a Boss Digital Delay DD-7. The all thing has been made in one take and has not been edited. Enjoy !
http://www.myspace.com/fredericgercha..."

Dark moogy drone (MF102 & 107 + Dark Energy + Boss DD6 DD7 & SYB5)

YouTube via GruithuisenCityMan | July 16, 2010

"Hello ! My name is Frederic Gerchambeau. I have made this movie and this noisy dirty moogy drone. This drone has been made with a Moogerfooger MF-102, a Moogerfooger MF-107, a Doepfer Dark Energy, a Boss Bass Synthesizer SYB-5, a Boss Digital Delay DD-6 and a Boss Digital Delay DD-7. The all thing has been made in one take and has not been edited. Enjoy !
http://www.myspace.com/fredericgercha..."

Moogy doepfering (FreqBox MF-107 + Doepfer Dark Energy + Boss DD-7)

YouTube via GruithuisenCityMan | July 14, 2010

"Hello ! My name is Frederic Gerchambeau. I have made this movie and this music. The music has been made in one take entirely with a Moogerfooger FreqBox MF-107 driven by a Doepfer Dark Energy. There is also a Boss Digital Delay DD7 adding a stereo delay. Enjoy !
http://www.myspace.com/fredericgercha..."

Doepfer A-107 Filter Demo1

Doepfer A-107 Filter Demo1 from Jyoti Mishra on Vimeo.

"A demo of the Doepfer A-107 multitype morphing filter.

Just a simple sequence looping (one osc, saw), while the filter steps through all its types.

At the same time, the resonance is being modulated by an LFO so you can hear how each type self-oscillates."

Doepfer A-107 Filter Demo2

Doepfer A-107 Filter Demo2 from Jyoti Mishra on Vimeo.

"A more musical demo, a little sequence with me twiddling the filter controls."

Moog Freqbox mf-107 Oscillator. Hexfix93’s Take.

You can find the full take here.

"The moog freqbox, a versatile fx pedal unit that can be used as an oscillator in a modular synth setup. When I first plugged them in, I noticed how huge they sounded. How alive. They reminded me of the older moog stuff, like tarus pedals and model d minimoog. With two, the oscillators would beat and sound pretty vintage. These things are FAT. The biggest. The sync sounds were so mean and huge, it would make my whole house shake. I ran these into my doepfer custom eurorack filled with rare boutique modules. I loves how the moog oscillators sounded through the polivoks filter the most. I prefered these oscillators for BASS duties. There is this warm beef that you get in the 60 to 200hz range on the low end of the frequency spectrum. No other synths and oscillators can pump this style of sound out. These pedals really did sound more vintage to me than the little phatty and the new minimoog voyagers. They had plenty of high end frequencies which I think are lacking a tad on the newer moog synths."

A-106-6 XP Filter

In case you missed the Trash_Audio filter below, Doepfer is coming out with a filter based on the Oberheim Matrix-12 15 stage filter. You can find it and more new modules on the Doepfer website.

"Module A-106-6 is a multimode filter that is based on the filter circuit of the Oberheim Xpander. The module features 15 different filter types (those filters of the A-107 that were available in the Xpander) with 8 filters available simultaneously. A toggle switch is used to switch between 2 filter groups."