Bach Sinfonia 15

YouTube via TatTwamAsi. No actual video in this one.
"Roland Sound Module U-110
ZX Spectrum 128
Recorded 1991"
image via wikipedia where you can find more info. "The ZX Spectrum is an 8-bit personal home computer released in the United Kingdom in 1982 by Sinclair Research Ltd. Originally dubbed the ZX81 Colour and ZX82,[1][2] the machine was later renamed the ZX Spectrum by Sinclair to highlight the machine's colour display, compared with the black-and-white of its predecessor, the Sinclair ZX81.[3] It is affectionately known as the Speccy by its fan following."


Some info and samples of the Roland U-110

Analogue Systems rs310 Reverb/Chorus module (eurorack)

YouTube via bigcitymusic
"Here is the Analogue Systems rs95 VCO being triggered by the rs200 sequencer. We are running the audio through the rs310 Reverb/Chorus module which is being modulated by the rs80 and rs85 LFO's. Crazy, huh?"

TR-606 + Prophet64

YouTube via lesingemonotone
"Using the Prophet64-application Bassline on a Commodore 128 computer and syncing the TR-606. This particular C128 features the MOS6581 rev3-chip, quite rare on C128s but more common on C64s.
The TR-606 is modded based on Geoff Waterston mods and features, among others, an envelop that is triggered from HT and can be set to sweep BD-pitch or HH-filter.

enjoy!
/Le Singe Monotone"

Korg KAOSSILATOR Improv # 3 Mike the Teacher

YouTube via MikeTheTeacher. follow-up to this post.

MOOG Polypedal for Polymoog

via this auction

Note this and the last four posts come from the same seller who sent these in. Be sure to check out his other auctions. There is a KORG VC10 Vocoder and an AMS DMX 15-80 studio delay in the set as well.

Matrix Patch Panel

via this auction

"Here a nice extremly rare big Matrix patch panlel + a lot of different pins, very good for Synthesizer diy projects or recording studio setup."

I'm labeling this one as EMS for reference as that is where you commonly see patch panels like this. Not sure if this actually is an EMS patch panel. If you know feel free to comment.

KORG MS-02 vintage analog interface

via this auction
"The Korg Interface MS-02 is designed for the purpose of connecting Korg MS-Series synthesizers with other synthesizers available throughout the world. This sophisticated signal processor greatly enhances the performance possibilities of the MS-Series. Among presently available music synthesizers, there are two different types of control system used for the VCO (voltage controlled oscillator) and EG (envelope generator). One of these systems is used by Korg and Yamaha; the other is employed by every other synthesizer manufacturer. The Korg MS-02 provides you with a way to change the control signals of one system into the control signals used in the other system. In this way, it acts as an interface so that any two synthesizers can be used together, provided that the synthesizers are equipped with the conventional input and output jacks for control voltage and trigger or gate signals."

Korg MS-03 Signal Processor

via this auction
"Korg MS-03 vintage pitch to voltage converter interface. This unit produces VCO CV (control voltage) signals and trigger (gate) signals so that you can use an electric guitar, microphone, or other transducer output (from an acoustic instrument, for example) to "play" a synthesizer. A variety of remote control input jacks let you use foot switches for more freedom and flexibility during live performance. With this amazing unit you can instantly put together your own guitar synthesizer, vocal synthesizer, etc., by simple connection with any synthesizer equipped with VCO CV IN and TRIGGER (Gate) IN input jacks."

Oberheim TVS

via this auction

"OBERHEIM SEM Two-Voice with built in step sequencer. Oberheim's first synthesizer was a single-voice mini-module called a SEM (Synthesizer Expander Module). However, in 1975, Oberheim created their first compact, programmable and polyphonic synthesizer by coupling two SEM modules to a 37-note keyboard and a simple analog sequencer. This was what became the Two Voice. Oberheim achieved a polyphonic sound not yet seen in ARP and Moog gear at the time by hard-wiring the two monophonic SEMs into the compact keyboard design. In 1976 Oberheim came out with another module, the Polyphonic Synthesizer Programmer (see SEM). This could memorize the control voltages of many parameters for up to eight SEM modules. When these were added to the Two Voice, Oberheim finally had one of the earliest programmable and polyphonic instruments! Released alongside the Two Voice also came the Four Voice which had four SEMs installed, and a larger 49-note keyboard. Two voices was great in 1975, and eight voices was pretty monstrous in the later seventies. But, a major drawback to these first Oberheim synths was that polyphony was achieved by having multiple modules. This meant that each voice had to be independently programmed. This also means that each voice has its own filter, making real-time filter sweeps of all your voices more than a handful! Fortunately the sequencer comes in handy for controlling each voice/module independently."

YUSYNTH EMS Diode Ladder Filter

via YuSynth where you can find more info:

"Well, here is another classical and very special filter : the EMS diode ladder filter!This filter has a sound of its own and is the signature of the classical Pink Floyd's song "On the run".

My aim here was to design a quite faithful copy of this mythic filter while using components that minimize the burden of selecting a great number of matched transistors. This is why I used transistor arrays (CA3046, CA3096). However, because the CA3096 has become a rare part and is now overpriced, I have also designed a PCB with discrete trannies to replace it. As for all the other filters of my YUSYNTH project, I have added an input and an output buffer to adapt this filter to the input and output levels of my modular system.

I also added an input for voltage control of the resonance : everything was there in the original module but was not made available, probably because of the limited size of the patch pin matrix of the AKS/VCS3...

Because, my power supply standard is +15/-15V, I have included a power regulator IC (78L12) to convert +15V to +12V and a single transitor voltage regulator -15V to -9V (I wanted to use a 79L09 but changed my mind when I realized that this voltage regulator is quite a rare part and is difficult to source)."

via this electro-music.com thread