MATRIXSYNTH

Analog percussion synth (PC-2) clone prototype (with CV control)

Published on Dec 13, 2015 Jason Hotchkiss

"First try out of a clone board I am working on, based on the Boss PC-2 / Amdek PCK-100. Couple of differences (mainly due to scarcity of the BA662A VCA chip) and some experimenting with CV control. I will eventually be selling these as kits, but not quite there yet! Enjoy the clip - the Cv really does open this thing up!"

DSP Synthesizers CR-4 - DR-55/CR-4 6HP Eurorack Module & DIY Kit

via DSP Synthesizers where you'll find order links.

"A kit with PCB, panel and all the components are now available.

The kit is $99. Prebuilt is $150.

You can buy just the PCB for $30 and just the panel for $30.

It’s the same PCB used in all my 6HP drum modules (including the dsp-D4)."

the turning point

All Yamaha FS1r, 8 voices.

Update: track notes:

"Looking back at '15, I find it hard to believe that I've spent over 6mths analysing ONE 16-note arp!!!

It took me quite a while to understand the shape of the arp, by stretching it, compressing it, inverting it etc using only an event-list editor. Things started to click when I began to separate out the frequencies in the arp and assign them to different voices. The rhythms that already existed in the arp, became better defined.

I used the matrixsynth fs1r editor [here] to create some of the envelopes. There's no patch library feature on this app yet, so there was still a vast amount of buttonwork on the synths - yes, I used a pair of fsir modules and a QY700, nothing else whatsoever apart from the amp and monitors.

Being limited to 8 voices was a real challenge. We know that two oscillators produce a more complex sound than one, and I upped this massively by allowing 2 voices for the pad. The sub-bassline and the kick drum take up another 2, so that's one machine used up already, meaning that I only had 4 voices for everything else.

The levels of complexity needed in a sound, to make it interesting, should also not be underestimated, and required efficient use of fseq, lfo, and fx assignments. There's no cc happening, variation was produced using lfo to freq mod, amp mod, filter mod, and for the drum tracks, 32quantise against 16accent up, which are preset templates on the QY700."

Custom Blue Roland TB303 Devilfish SN 021

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

via this auction

"Up for grabs is a flawless, fully serviced and modded TB-303 with Devilfish mods and custom aluminum casing.

Professionally serviced and modded by Robin Whittle of Real World Interfaces in Australia

In addition, Robin also professionally mounted the TB-303 in a custom aluminum case from Acid.Ch

A little about the mods:

This machine is Devil Fish serial number 146 and was modded with version
2.1C. This is the only Devil Fish with Blue LEDs in the Devil Fish board itself. Normally the "e" gate LED and the ‘Normal’ and ‘Accent Decay’ LEDs are Red.

Just to the right of the Tempo pot, there is an extra switch on the left for enabling the Audio In to Filter using the 6.5mm socket on the rear panel. Center is Off. Up is On. Down is momentary On - with spring return to Center.

On the left, the unit also has the optional 32 bank memory system.

The Devil Fish sound modification provides the following additional controls:

Potentiometers:
Overdrive
Normal Decay
Accent Decay
Filter Tracking
Soft Attack
Slide Time
Filter FM

Switches:
Sweep Speed
Resonance
Muffler

Push button to momentary activate Accent

Additional interfacing on the back of the panel is also provided:
Gate, Accent and CV Outputs
Gate in
CV in
Slide in
Accent in
Filter CV in

The model does not have midi but can be synced via din-sync to other electronic instruments or can be played externally through the CV/Gate inputs etc.

If you LOVE the TB-303 like I do, this is your chance to pick up the ultimate example! The Devilfish mods really take the 303 to the next level! This is the ultimate ACID machine! The unit is in excellent shape and all switches, pots and buttons are perfect. It is extremely durable when combined with the aluminum case. It feels solid and durable and will probably outlast my lifetime. The case is like new with no scratches."

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Arturia Origin Desktop Virtual Analog Synthesizer

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via this auction

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Korg Z1 Analog Modeling Multi-Part Polyphonic Synth

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Emu Emulator II Analog Sampler Synth Keyboard SN 1251

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

via this auction

"Emu Emulator II w/ Extra Floppy Drive - so basically a II+
Fully Functional - Includes Floppy Disks with Samples
Similar to E-Mu's Legendary SP1200 sampler but with a Full Keyboard
61-Keys, Midi, Velocity, Aftertouch
Holy Grail of Analog Sampling - Efficient and Easy to Use Music Workstation
100% Working, No Issues, No Damages"

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Mocher Dub - Moog Mother-32 with Korg KR-55B - demo from Warstat #15 :o)=

Published on Dec 13, 2015 Druweed

ROLAND TR-77 Analog Rhythm Box 1973 | HD DEMO |

Published on Dec 13, 2015 AnalogAudio1

"(c) 2015 by AnalogAudio1

The Roland Rhythm 77 (exact model name: TR-77) is a non programmable analog rhythm box. It is the predecessor of the Roland CR series, some drum sounds are quite similar. All rhythms are mixable. Volume sliders for BASSDRUM, SNARE, GUIRO, MARACAS/HIHAT/CYMBAL allow more variety of the patterns. The TR-77 has that classic Roland analog sound. Roland choosed the flat design to fit on top of organs.

I played the TR-77 with a small amout of ambience from a Lexicon MPX-500. Beginning at 4:10 and in the intro I played the TR-77 through a Korg SDD-3000 delay."