Notes: This is our new VCO, we discontinued our ADDAC701 VCO a few years back and since we've been wanting to release a more stable version with better pitch tracking increasing pitch reliability further minimizing the detuning issues of analog VCO's.
For this new revision we chose to use the modern version of the CEM3340 ic from CoolAudio and add the triagle to sine circuitry of our previous VCO. This new version is extremelly stable over 7 octaves.
We also added a new Mix section which allows mixing of all waveforms controlled by 3 knobs SIN/TRI, MIX and SAW/RECT.
Notes: The TILT EQ concept was first introduced in the 1970's by Quad Ltd, featured on the company's model 34 preamplifier.
The tilt control tilts the frequency spectrum of the audio signal by simultaneously boosting the treble and cutting the bass frequencies, or vice versa, making it a simple to use but powerful EQ.
As stated by Quad Ltd, it was designed to produce a very gradual change in balance across the musical spectrum without changing the overall subjective level.
This gradual fall from Bass to Treble, or vice versa, means there's no sudden change and hence no 'coloration' added to the sound, the sound will remain entirelly natural but with a slight added bottom or high end. In practice, it rotates most of the audio-range frequency response around a 1Khz axis, so as to change the overall balance of the sound from warm to cool without affecting either the apparent volume or the "color" of the sound.
Here this idea is introducedinto the modular world in a stereo configuration.
CV input with attenuverter was added for the Tilt control as well as a Spectral Motion switch that allows stereo spectral matching or inverted spectrum use of the Tilt control: Left=Right matches both channels direction, i.e. when left channel is tilted to the low end the right channel will also be tilted to the low end
Left Right inverts the Right channel spectrum, i.e. when left channel is tilted to the low end the right channel will be inverselly tilted to the high end, or vice-versa.
This possibility is extremmelly interesting when applied as a stereo effect, in other words a spectral EQ panner. This module will also be available as a full DIY kit.
Notes: Really nice stuff here. The filter circuit from ADDAC's 4 Voice Cluster module gets reimagined as a multi-mode stereo or dual mono filter module. A lot of filter action in just 6hp.
While developing the ADDAC105 4 Voice Cluster module, a new multimode filter to place after the summing mix stage- and the results were so postitive that it was released as a dedicated filter.
To make it more interesting, the circuitry was duplicated, to be able to use it in a stereo signal path.
To make it more versatile, a switch was added to set the working mode from Stereo to Dual Mono where both filters can be used independently.
In Stereo Mode the Left Cutoff is used to control the Right Cutoff.
In this case the Right Cutoff Knob and CV Input are simply bypassed and will have no impact on the Right Channel operation.
This allows immediate sync of both filter frequencies when the Stereo position is engaged.
Optionally there's a jumper in it's back that, when placed, connects the Right Controls back to the Right CV control allowing the possibility to control the offset of the Right Channel Cutoff.
Resonance is independent on both Modes and still has to be set manually to match both channels.
Both the Audio and CV inputs are normalled from the Left into the Right channels.
As standard plugging any input to the Right channels removes this connection.
Notes: Another addition to the ADDAC300's Expressive Controls Series.
Preceded by the release of the ADDAC303 Muscle Sensing module, this is the second module made to take advantage of the physical body as a control source.
This module originated from a simple idea: using one's heart beat as a control source.
Using a clip-on sensor, that can be attached to a finger or an ear lobe, the user's heart rate will be aquired by sensing the blood flow passing under the sensor. This pulse will generate a trigger and an AD envelope.
The ADDAC212 is a 4-channel VC attenuator and off-setter. It lets you deal with up to four parallel inputs as a single pack, modulating their amplitude and offset (± 10V) with the same control knobs, both with cv inputs and dedicated attenuators.
Features 4 parallel VCAs with the same amplitude and offset control knobs and cv inputs with dedicated attenuators.
Idealized to be the perfect companion for Envelope Generators, you can send 4 EGs through it and control the overall amplitude and offset of all 4 envelopes at once. This allows more control over the Envelopes when patching typical synth voices.
Notes: This is the VC Rotator, a stepped routing module for any type of signal (audio, cv, gate, trigger...)
Similar to a VC switcher but in this case there's the same number of inputs than outputs so, instead of 4 to 1 or 1 to 4, this module is always 4 to 4 but it can be patched for 2 to 2 and 3 to 3 step actions.
All four inputs get routed to the four outputs depending on the CV and Clock controls and are divided into 4 routing steps:
1. routes all inputs to the same number output: 1:1, 2:2, 3:3, 4:4
2. routes all inputs to an offset of 1: 2:1, 3:2, 4:3, 1:4
3. routes all inputs to an offset of 2: 3:1, 4:2, 1:3, 2:4
4. routes all inputs to an offset of 3: 4:1, 1:2, 2:3, 3:4
Direction determines if the clock input goes forward or backwards.
Going forward it can be set to 2-3 or 4 steps using the Rotate knob offset, going backwards always sync to 4 steps even if offseted by the Rotate knob.
For 2 & 3 step action input 1 is normalled to input 3 and input 2 is normalled to input 4.
Reset resets the internal clock to the first step.
Pendulum, external sequencing or any complex CV actions can be achieved using the CV input and dedicated attenuverter.
Notes: Inspired by our ADDAC701 VCO waveform mixing section, our new VC Signal Router also updates our legacy X-Fade/Panner to a stereo configuration that also allows 4 quadrant mixing.
Featuring two dedicated X-faders and a stereo VCA that can also be used as a third X-Fader. All controls have their own CV inputs and dedicated Attenuverters for precision control.
4 quadrant mixing is achieved by using the stereo Master as a X-fader between left and right channels, this way you can plug 4 audio sources and sweep/crossfade between each and any of them using the 3 x-faders. Plug any 4 sources (4 waveforms of a VCO, 4 LFOs, 4 envelopes...) and sweep through morph through or have them all mixed together.
For other configuration types Left and Right X-fader channels can be routed through the Master stereo VCA or sent directly to the outputs. A stereo Direct input can also be routed through the Master VCA or sent straight to the outputs.
The Mono Sum output always mix Left and Right outputs together allowing the possibility to use the module as a peculiar 6 channel mono mixer.