Re-introducing Tonus VCF r3 Eurorack Filter Demo ARP 2600 4012

Tonus VCF is back by popular demand.
Still that faithful Eurorack filter adaptation of the early MKI ARP 2600 synthesizers that you know and love w/ some minor improvements.
Sound sources | Capt'n Big-O + Pittsburgh Primary Oscillator B
Recorded direct, no other mastering or effects.

Tonus VCF is a eurorack modular adapation of the ARP 2600 mk1 filter (4012).
Check my Reverb store for availability and other cool modules

GSE Announces 4027 VCO Eurorack Adaptation of the ARP 2600 VCO-2

Today I am giving an introduction to my new 4027 VCO. The 4027 VCO is a Eurorack adaptation the ARP 2600 VCO-2. Watch your audio levels, especially when the full range of the waveforms are demonstrated.

Timestamps
0:00 Opening Sounds
0:25 Introduction
1:12 Audio
1:31 Euro Adaptation: Bringing That Special Tone To Life
2:09 Front Panel
3:03 Waveforms Audio
5:38 Doubling VCOs, FM
7:25 Outro Sounds: Bass, Lead, Arpeggio

4027 VCO full details at Modular Grid

Recorded direct to Tascam DR-05.
KBD control + Sequencing: Beatstep Pro
**Ending Track**
Bass: 4027 VCO | Tonus VCF
Lead/Arpeggio: 4027 VCO | 4023 VCF
Delay: Timefactor

Roland Juno-106 + Eurorack DEMO [Tesla Coil]

The Juno-106 has landed once again in the studio. I put together a little sequence on the BSP. And a warm saturation bassline in Eurorack.

Juno-106 | Timefactor | Big Sky: Arpeggio and swells
2xADSR | 4023 VCF (self resonance): Kick
Synth Box | JP6-VCF | 2xVCA | 106 Chorus module: bass line
Transistor-82 | Spring Tank Reverb | EMW VC Pan: Percussion
Modulations/Triggers: Batumi, Varigate4

Recorded live in 1 shot to Tascam DR-05
Some post processing in Cubase 7.

Coolwhip

M12 TonusVCF DeltaVCF JP6VCF Hats909 Transient Basimilus SpringReverb LoFiJunky BigSky

Testing A Ring Mod + Sub-Oscillator Circuit

In these quick videos I am testing a DIY Ring Mod + Sub Oscillator circuit through my Tonus VCF (ARP 2600 clone of the 4012 filter). The first video is through a Timefactor Delay. The second video I am punching into freeze mode on the Strymon Big Sky for a colossal wall of sound! The Ring Mod + Sub will become a eurorack module, I will give more info on that soon. Sequenced on Arturia Beatstep Pro. Thanks for watching!

The Keys To Huge Synthesizer Bass [Tonus VCF Demo #4]

Today in this demo I show some of the keys to getting huge bass sounds. I’m doing this on the Eurorack, but these ideas should work on most any synthesizer.
#1 Choose a quality low pass filter. I’m using my Tonus VCF module, a clone of the ARP 2600 filter. It’s a 4-pole low pass bass that uses a transistor ladder design similar to Moog.
#2 Cobble together as many oscillators as you can. Here, the Pittsburgh Synth Box wields a Tri, Saw, and Pulse along with a Sub-oscillato. Then I add another saw and square wave from the DNA Symbiotic Waves.
#3 For short basses use a punchy VCA/decay combo like the Bastl Skis. If you’re using a hardware synth, route a single envelope to affect the filter amount AND the amplitude at the same time.
#4 Modulate the filter with negative key tracking so that as you play higher on the keys, the higher notes will have reduced frequency cutoff. To do this I am sending the pitch CV to the signal inverter on my Pittsburgh Toolbox. Remember, a signal inverter just mirrors your signal across zero volts. For example, pitch CV goes from 0v to 5v. If you run that through an inverter, the output goes from 0v to -5v.
#5 Modulate the filter with a small amount of LFO to make your bass sound growl.
#6 Bass pads need a longer/slower Attack-Decay-Release envelope to evolve over time.
No effects used, audio recorded direct to Tascam DR-05

Tonus VCF (X3) Filter Gets An Onslaught of CVs Eurorack Synthesizer

This being my THIRD video of my new Tonus VCF module, and therefore I must punish THREE of them, in a line up, with an onslaught of control voltages. For those living under a rock, Tonus VCF is my all-analog Eurorack adaptation of the righteous ARP 2600 filter - the early version 4012. Module #1 (left) is belting out a big ol' kick drum using self-resonance only. Module #2 (middle) is being grass fed whole grain digital bliss from the DNA Symbiotic Waves. Module #3 (right) is squeaking out stupid little astrodroid noises using only self-resonance. Varigate 4 and Beatstep Pro are micro-managing other things: Bastl Skis dual VCA, Pittsburgh Synthesizer Box, Toolbox Sample/Hold, 4MS RCD, sequential switch. All 3 filters mixed using my Infusor module. No filters were harmed in making this demo.

Tonus VCF Module First Look [ARP 2600 4012 Filter Eurorack Adaptation]

Details are now available at Modular Grid. Yes it's real, and it's spectacular. Should be available for $200 usd in the next week or two on Reverb.com.
In my previous video I showed a breadboard circuit of a classic analog synthesizer filter. The identity of the filter was left a mystery. Today in this video I not only reveal that it is a faithful Eurorack adaptation of the 4012 module from the early ARP 2600 synthesizers, you will get a sneak peek at my hand-crafted prototype design - the Tonus VCF - and hear it in action!

I jump right in and see how the Tonus VCF sounds by sending the resonance into self-oscillation. Be warned, demonstration of resonance self-oscillation can be shrill. Then I cut the resonance and send a sawtooth to the audio input, then a square wave, then a complex digital waveform from the Pittsburgh DNA Symbiotic Waves. After that I remove the audio inputs, return to pure resonance self-oscillation, and this time send the Sawtooth into the CV input to make the filter go berserk with some Filter FM. These are the kinds of sounds the ARP 2600 was known. Last I use an LFO and Sample-Hold as CV inputs. Audio recorded direct to Tascam DR-05, no effects.