Behringer ARP 2500 1047 Multimode Filter Demos by O.Z. Hall

video by O.Z. Hall

Two demos from supporting member, O.Z. Hall.

"This is the first of two demos of the of the new 1047 'Colin' multimode filter/resonator. I'm focused on using the 1047 as a resonator for percussive sounds. Read more about the original ARP 2500 Multimode Filter - module 1047: https://alanrpearlmanfoundation.org/t..."

Behringer ARP 2500 1047 Multimode Filter - Part 2 - Different Filter Responses


"This is the second of two demos of the of the new 1047 'Colin' multimode filter/resonator. In this video, I'm focused on using the 1047 as a filter in different modes - Low Pass, High Pass, Band Pass, Notch. I use both Noise and a Sawtooth waveform."

Don't miss the interview with ARP's Dennis Colin here.

Random Sequence Lengths

video upload by boxoftextures

Follow-up to this post.

"So I was minding my business the other day and checking out Matrixsynth.com, as one does, and came across a post about a video from OZ Hall. He had patched up a Eurorack version of a 960 sequencer so it would vary the sequence lengths. I hadn't even watched the video yet but just from what was in the description I was able to see the whole setup laid out before my eyes. I could make this work in Voltage Modular with randomized sequence lengths picked automatically each time through the sequence. So I set to work and an hour late I had this patch, and in this video I go through it step by step to show how it all works.

The major difference between my version and what OZ Hall did is that I added a Random Task module and a couple of switcher modules so it could switch sequence length on its own without me having to manually do it. Could totally be done in hardware given the proper modules, of course.

To make this work what I've done is to connect each sequencer step's trigger output jack to an input on a switching module. Then, every time the sequencer hits step 1 it sends a clock to the Random Task module, which makes it pick a random voltage. That gets sent to the 1x8 Switch module which picks the output based on the voltage level. That voltage gets sent to the switching module which sends a voltage for the chosen step into the buss module and then on to the trigger input of the sequencer, forcing it to start over from step 1.

So every time the sequencer hits step 1 it essentially picks the step which triggers the reset to step 1 and you get random sequence lengths, picked by the Random Task.

So I'd like to thank both Matrix and OZ Hall, and there are links below to both the post on Matrixsynth.com and to the YouTube video that set all the bells off in my head.

Matrixsynth post: https://www.matrixsynth.com/2022/04/b...
OZ Hall video: https://youtu.be/1RBgkFnQRe0https://youtu.be/1RBgkFnQRe0

Modules used:
From Cherry Audio
960 Sequential Controller
962 Sequential Switch
Random Task
1x8 Switch
SynthVoice
Mini LFO
Stereo Delay

From Andrew Macaulay
Micro MixBus
Fixed DC

From Playertron
Switchboard

From haslo
HÄÄSchen

Lastly, just to make this super clear as I don't explicitly bring it up in the video, say you want to have a four step sequence. In that case, you'd want to patch the output jack of step 5 to the input jack of step one, What we're doing with the switching mechanism is having *all* the output jacks connected at once through the buss but we're letting the Random Task module choose which switch it closes on the switching module to let one of those signals through. So in a sense we're using a module to repatch the bottom row of jacks on the sequencer on the fly.

Featuring
Cherry Audio Voltage Modular https://cherryaudio.com/products/volt...

Recorded and edited in ScreenFlow https://www.telestream.net/screenflow/
Audio routing done in Rogue Amoeba Loopback https://rogueamoeba.com/loopback/
Sennheiser XS Lav USB-C microphone https://en-us.sennheiser.com/xs-lav-u...

Twitter: https://twitter.com/selgart
Patreon: https://www.patreon.com/boxoftextures"

Synthesizers.com Composition Contest Videos

Use the player controls on bottom to skip around.
You can find descriptions for each video below. You can find additional Synthesizers.com contest posts here.

Playlist:

1. O Z Hall: Zebra Synth

Dive into the enthralling world of synthesizers and witness O Z Hall's outstanding entry, "Zebra Synth", in the Synthesizers.com Composition Contest. Crafted with unparalleled precision and technique, this remarkable composition combines an array of captivating sounds that will take you on a breathtaking sonic journey.

Hall masterfully utilizes three distinctive patches in "Zebra Synth" to create an immersive soundscape. The first patch features a drone made using a Q106A oscillator, which is meticulously processed by a wave folder. Another oscillator, intertwined with linear FM from the wavefolder output, results in a fascinating "clang tone" that is beautifully amplified by a digital reverb.

In the second patch, a sequenced voice is artfully produced by employing two re-paneled Q106 oscillators. One output is channeled into the input of the linear FM, which subsequently provides intriguing timbral variations. The Q119A sequencer's 3rd row masterfully controls a Ratchet effect, adding even further depth to the composition. An expertly-applied digital delay effect enriches the output of this patch.

Lastly, the lead voice is ingeniously designed using the Q169 Dual Oscillator with Pulse Width modulation. O Z Hall skillfully manipulates the 24db/oct low pass filter in real-time to deliver an electrifying performance. The extended digital delay effect ties the entire sonic experience together.
O Z Hall's "Zebra Synth" draws its arsenal of modular synthesis tools from the Synthesizers.com catalog, including Q106, Q106A, Q119A, Q171, Q148, Q127, Q169, Q168, Q167, Q114, Q174, and Q175A modules. The creative process has been meticulously executed, showcasing how these modules can be combined to engineer a rich and dynamic sound adventure.

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Wavolver II demo

video upload by O.Z. Hall

Click here for additional Wavolver posts by O.Z. Hall.

"The Wavolver II is a waveshaper that includes both a wave (manual) folder and a pulse waveshaper (with vertical offset and pulse width modulation ). It also includes a second pulse wave. This Eurorack module is available from Elby Designs. The circuit was designed by Ian Fritz.

I'm modulating is with a quantizer which is acting as a kind of sample and hold circuit."

ARP Pro Soloist High Pass (HP) Filter Section Clone by O.Z. Hall

Published on May 14, 2020 O.Z. Hall

"I cloned the ARP Pro Soloist High Pass (HP) Filter section. The output of the high pass filter section goes straight into the 24DB/Oct Low Pass filter on the soloist.
There are 4 - 6DB/oct HP filter circuites at 4 different cutoffs. They are in parallel. The outputs are summed.
This video demonstrates each of the 4 filters in isolation. Next they filters are combined in every combination (limit two filters at a time)."

You can previous posts featuring O.Z. Hall & 5U systems, including an ARP 2600 configuration of a Synthesizers DotCom portable 22 here.

B2600 R2D2 sound - how they did it.

video upload by O.Z. Hall




video upload by O.Z. Hall

"This is a 2600 patch which sounds a bit like the R2D2 sound from Star Wars. There is a short demo, then a detailed review of the patch, so that you can enjoy the patch on your own 2600!"

Octave Morph - oscilloscope view

video upload by O.Z. Hall

"The prototype of the ZebraSynth.net the Z151 Octave Morph module explained in pictures. In this video I'm driving the CVs for the module from an internal LFO (CV1) and an external LFO ( CV2 ).

Let us know in the comments whether you think we should offer these for sale.
If so, would you prefer 5U/MU/Dotcom or Eurorack format ... or both?

This is the module presented as a short in this video:"

Joystick/Waveshaper Module #shorts

video upload by O.Z. Hall

O.Z. Hall #DotCompetition2023 Video Submission

video upload by O.Z. Hall

"This video is my submission for the DotCompetition 2023 by Synthesizers.com.

Here's a link to the referenced Synthesizers.com Q119 RATCHETING tutorial video:" [posted here]

ARP 2600 plus Modular July Jam

video upload by O.Z. Hall

"This two minute jam features bass from the Korg ARP 2600 FS. A sequence voice is provided by a Behringer ARP 2500 eurorack modules. Percussion is supplied by Mutable Instruments Peaks driven by a Euclidean Circles gate sequencer. The lead is provided by a Synthesizers.com modular plus delay from a prototype version of the Swiss Daisy DSP module by ZebraSynth.net."

AM1031 Multipurpose Filter

video upload by O.Z. Hall

TIMECODE
0:00 - Intro
1:02 - Front Panel Controls
2:15 - History and Description
3:18 - ARP 1047 vs AM1031 - Peak Mode
4:09 - A/B audio test 1 - Notch based phase shifter sound
5:52 - A/B audio test 2 - Notch vs Peak with varying Resonance (Q)
9:46 - Conclusion

"Buy Me a Patch Cable
https://buymeacoffee.com/ozhalljr

This video examines the AMSynths AM1031 Multipurpose Filter. This state variable filter was created by Dennis Collin who also created the ARP 1047 Multimode Filter. The two filters are similar, but the 1031 includes an addition response called Peak.

My 1047 video, part 1
Behringer ARP 2500 1047 Multimode Filter Part1 - Resonator/Percussion [posted here]

None of these links are affiliate links.

The AM1031 product page. https://www.amsynthstore.co.uk/produc...

AMSynths Plans 2024 - Ten ARP 2500 Modules! [posted here]

Demo of the Peak response of the
Triangulum Research AT 327, which is a 2018 clone of the AR 327 Aries module. [below]

AT 327 basic demo

video upload by brokenwave

"This is a simple demonstration of the AT-327 Multimode Filter from Triangulum Research.
The AT-327 is a multimode filter based on the Aries AR-327; a filter designed by Dennis Colin in 1975 for Aries Inc. in Massachusetts. Dennis Colin designed many important filters for ARP, Aries, and Oberheim, but the Aries filters are hard to come by. Their design is similar to that of the ARP 1047, but was simplified to reduce cost and make use of newer components that had come on the market as of 1975.
I have a particular fondness for the rich and sometimes gristly analog timbres produced by the Aries System 300 modules, and as challenge to myself, decided to adapt their designs to the very popular eurorack standard. This is the first character in the series."

System 55 - 1630 Bode Frequency Shifter - Part2-- Musical Uses first 4 of 7

video upload by O.Z. Hall

O.Z. Hall System 55 - 1630 Bode Frequency Shifter videos

"This in depth video covers the 1630 Bode Frequency Shifter. It is in three parts.
Part 1 includes background information like the Harmonic Series and Ring Modulators. This background is essential to understanding what a Frequency Shifter is.
Parts 2 and 3 of this series answer the question 'How can I use a Frequency Shifter musically?'.

1630 Bode Frequency Shifter 1974 Moog datasheet
https://moogfoundation.org/wp-content...

Doepfer A-126 Frequency Shifter manual
https://www.doepfer.de/a100_man/A126_...

PerfectCircuit.com article
https://www.perfectcircuit.com/signal...

TIMECODE
0:00 - Intro
0:30 - Application 1 - Drums
7:34 - Application 2 - Chorus and Stereo Imaging
11:30 - Application 3 - Clang Tones - Amplitude Modulation (AM)
16:01 - Application 4 - Clang Tones - AM w/Frequency Modulation
19:40 - Part 2 conclusion"

Victor Part 3 - Detailed Tutorial (2 of 2 )

video upload by O.Z. Hall

O.Z. Hall Victor posts

"This video is a follow-up my Victor Part 2 video covering the details of the Behringer Victor module. This eurorack module is a quad digital oscillator which is based on the Prophet VS synthesizer from Sequential Circuits. This technology is called Vector Synthesis. It was the basis for the Korg Wavestation and the Yamaha SY22 and TG33 synthesizers.
Part 3 (this video) continues this detailed tutorial with more Use Cases and a look at software available for the Behringer Victor Module.

TIMECODE
0:00 - Intro Part 3
0:30 - Use Case: Voice Architecture Alternatives
2:06 - Use Case: Audio FM into a 921b Oscillator
3:52 - Use Case: Victor as LFO melody generator
6:51 - Use Case: Joystick output +/- 5V
8:41 - Synthtribe Software
12;51 - Victor Editor Software
16:24 - Conclusion Part 3"

Harmonic Animation Pt2 - CV Controllers for PWM

video upload by O.Z. Hall

O.Z. Hall Harmonic Animation posts

"If Melody is the essence of Music, Timbre is the essence of Synthesis!

Part 2 in the Harmonic Animation series focuses on several different Control Voltage generators that can be used to modulate the pulse width (PWM) of a Voltage Controlled Oscillator (VCO)."

Harmonic Animation Pt 1 - Intro to Harmonics and their Animation

video upload by O.Z. Hall

"If Melody is the essence of Music, Timbre is the essence of Synthesis!

Part 1 in the Harmonic Animation series introduces the concept of Harmonics and demonstrates two ways to animate them to dynamically change the timbre of a sound."

O.Z. Hall's Harmonic Animation series (more to come)

960 Sequencer Advanced Techniques 1

video upload by O.Z. Hall

Part 2 here

O.Z. Hall 960 Sequencer posts

"This introduces four advanced techniques for the 960 Sequencer.

TIMECODE
0:00 - Intro
0:39 - 3rd Row Control of Timing
3:21 - Transpose with 2nd 960 Sequencers
6:01 - Alternate Clock with Synced 921 Oscillator
8:40 - Ratchet Effect
12:10 - Closing jam
13:02 - Conclusion"

Behringer System 55 Sequencer Expansion

video upload by O.Z. Hall

"This is a quick video about expanding the Behringer System 55 modular synth with a second 960 sequencer."

O.Z. Hall Behringer posts

MUAD at MCAC 2022 Phaedra II

video upload by O.Z. Hall

"This is M.U.A.D. ( the Modular Units of the Analog Domain ) performing live at the Magic City Art Connection on Sunday April 24 2022 in Birmingham, AL.

My channel: @O.Z. Hall
M.U.A.D.s site: http://muadmusic.org/

Main synths used:
Sequential Prophet X synth - main Orchestral lead
Moog Sub37 - lead
Ensoniq ESQ-1 - lead
Arturia MatrixBrute - sequence
Alesis Drum machine - drums"

ARP 2600 - duophonic 3620 keyboard

video by O.Z. Hall

"This video explores the possibilities provided with the ARP 3620 keyboard duophonic feature. Interval latching controlled via footswitch is one feature. Another is routing only the CV2 (Upper Voice) control voltage through the Lag Processor, so that only the upper voice has portamento."

O.Z. Hall ARP 2600 posts

System 55 - 1630 Bode Frequency Shifter - Part 3-- Musical Uses last 3 of 7

video upload by O.Z. Hall

O.Z. Hall System 55 - 1630 Bode Frequency Shifter videos

"This in depth video covers the 1630 Bode Frequency Shifter. It is in three parts.
Part 1 includes background information like the Harmonic Series and Ring Modulators. This background is essential to understanding what a Frequency Shifter is.
Parts 2 and 3 of this series answer the question 'How can I use a Frequency Shifter musically?'.

1630 Bode Frequency Shifter 1974 Moog datasheet
https://moogfoundation.org/wp-content...

Doepfer A-126 Frequency Shifter manual
https://www.doepfer.de/a100_man/A126_...

PerfectCircuit.com article
https://www.perfectcircuit.com/signal...

TIMECODE
0:00 - Intro
0:32 - Application 5 - Feedback Suppression
4:00 - Application 6 - Frequency Shifted Delay
11:04 - Application 7 - Speech Porcessing
17:14 - Part 3 - Conclusion"

System 55 - 1630 Bode Frequency Shifter - Part1-- What is a Frequency Shifter?

video upload by O.Z. Hall

O.Z. Hall System 55 - 1630 Bode Frequency Shifter videos

"This in depth video covers the 1630 Bode Frequency Shifter. It is in two parts.
Part 1 includes background information like the Harmonic Series and Ring Modulators. This background is essential to understanding what a Frequency Shifter is.

1630 Bode Frequency Shifter 1974 Moog datasheet
https://moogfoundation.org/wp-content...

Doepfer A-126 Frequency Shifter manual
https://www.doepfer.de/a100_man/A126_...

PerfectCircuit.com article
https://www.perfectcircuit.com/signal...

Datasheet via The Bob Moog Foundation

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