Inverted Envelope Bass - CRAFTsynth 2.0 & SKULPT

Published on Aug 21, 2019 Modal Electronics

"An inverted filter envelope helps bring the squelch to this bass patch on CRAFTsynth 2.0. SKULPT was played on top to add keys that creep in and eventually take over."

Blue Lantern Salamander Synth - Fixed Modular Synth

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You can find a demo of the prototype with some pics here.

"Blue Lantern Salamander Synth - Fixed Modular Synth. Condition is Used.

3x Oscillators
Ring Modulator
Midi to CV converter
3x Attenuators
3x Mixer inputs
2x 3-way splitter
3x VCF - Ladder, Polivoks, OB12 analog filters
2x VCA
2x TADSR filters
2x LFO

Check out pictures to see fixed modules. This was an early Blue Lantern Build. all functioning as it should. takes standard PC type power cable. Will include power cable and 15 patch cables of varying sizes."

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Yamaha AN1x

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Plastic protective film over display which should peel right off. According to the listing: "Original owner. Has spent most of its life stored and unused. Virtually time machine condition. Still has plastic film over display and owner’s manual still unopened in original wrapping. Also comes with the Yamaha original factory power supply unit. Has a hard to notice scratch on the bottom behind the board. Battery low after 22 years and will need Essentially a brand new AN1x and nearly impossible to find in such perfect condition. Scaling down and looking for a good home."

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Roland VP 330 Vocoder Plus

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"In excellent condition. The unit has some very minor cosmetic wear and some damage to the sidewood but in very clean condition. All functions, keys, sliders buttons working well!"

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Blue Roland SH-101 Vintage Synthesizer SN 442927

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"The unit has some very minor cosmetic wear and scratches but overall in very clean condition. All functions are working. This unit has been serviced , cleaned and tested before listing. Please see pictures for cosmetic condition. This unit comes with adapter PGA-100 (100v-240V)"

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Synthesis Technology MOTM-700 Dual VC Router

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"The MOTM 700 Dual Voltage Controlled Router is a unique module.

A pair of separate weighted switches that can route audio or voltage, and can be run parallel or in series.

It is controlled by setting a potentiometer at a value from -5 to +5 volts on the front panel, thus setting a threshold for incoming CV to throw the switch one way or the other. It can be used as 1 in 2 out, or 2 in 1 out, per switch.

It's like having an extra set of hands protruding from your body patching furiously fast on your behalf, but without the hideous immoral experiments to get you there.

Some examples of uses:

Split points. Play your keyboard, as you go up or down the notes several events can be programmed to happen, be it timbral, textural, or pure insanity. Or unpure, your preference.

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Layering Tones with the Mimeophon

Published on Aug 21, 2019 MAKEN0ISE

"We'll take a droning DPO, hand-sequence it with René, process it in stereo with the Mimeophon, and then travel to Zone 7 for long-form harmonic layering."

Pittsburgh Modular Documentary Films Presents: Discovering the Microvolt Episode 5

Published on Aug 21, 2019 Pittsburgh Modular Synthesizers

"The fifth episode in a series documenting the features and functionality of the Pittsburgh Modular Microvolt 3900. This episode is an overview of the dynamic VCA section."

Discovering the Microvolt Episodes

nonlinearcircuits beat freq 2

Published on Aug 21, 2019 nonlinearcircuits

"Mainly controlled by 2 VCOs, which also supply the audio. Middle section is clocked by 2 LFOs."

via nonlinearcircuits

"The idea for this module came from a schematic that has been floating around the web for years - 'beat frequency indicator'

The idea is to feed the circuit two signals and depending upon which one had the higher frequency the ring of 4 LEDs would light up in a clockwise or anti-clockwide direction. The speed of rotation would indicate how close or disparate the frequencies are. If the signals have the same frequency then just one LED is lit.

The original circuit used 74xxx series ICs for the logic, so it was simple enough to find the CMOS equivalents (sort of), then add gates corresponding to the LEDs and use the spare outputs of one chip to feed pots to make sequences. Then for good measure a discrete XNOR circuit was added to give a psuedo ring-modulator output based on the 2 incoming signals.

In operation this module is quite unique; the CV signals return to 0 between each step, the length of each step can vary depending on the incoming signals. Gates come in spurts. The circular LED display jerks around, sometimes it completes several revolutions confidently and then stutters between two stages, sometimes it shimmers on one spot.

At both audio rates and clock rates, this module is quite unpredictable but always seems to be putting out useful signals.

PCB = USD18
Panel = USD20
assembled = USD160"

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nonlinearcircuits 1U Signum 2

Published on Aug 21, 2019 cirtcele

via nonlinearcircuits

"In the simplest sense, this is a switching module. It is a little different though because it has 3 states rather than just on/off:
\operatorname{sgn}(x):={\begin{cases}-1&{\text{if }}x<0,\\0&{\text{if }}x=0,\\1&{\text{if }}x>0.\end{cases}}
In this case, the module uses approx 1V, rather than 0V, as the switching point, so that it can be controlled by gates. It is simple to bring it back to 0V for those who think it should be.
Also the '0' state is really a result of the diode voltage drops rather than any circuit design trickery.

The signal on the bottom input is fed to the switch of the Switch jack (oh yes) so the incoming signal can switch itself without any help.
The three states actually mean there is a flat spot at the switching point, so the circuit can be used for audio but at slow rates there is a click, so it is far better suited for CV processing.

This circuit originally was used as the nonlinear element in the Primal Hyperchaos and two of them in the Hyperchaos Deluxe. I quite like it on its own, so the Signum Hyperchaos brought the signum section to the panel where it could be used as a stand-alone module. This version drops the chaos and just has the Signum.
The switching is done by diodes rather than a dedicated IC.

The panels are available in white/gold and black/gold in both Pulp Logic and Intellijel formats. Please specify which colour and which format you want when ordering.

Also the PCBs are the same for both panel formats and use a standard Eurorack power connector. There is no provision for the Pulp Logic 3 pin power connector.

PCB and panel set = USD10
Assembled = USD55"

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