E300 Ultra VCO - Overview and Demo

Published on Oct 20, 2019 SamiRabia
Update: Re-Published on Oct 27, 2019 SamiRabia

Synthech E300

Roland TB-303 Bassline Synthesizer

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via this auction

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Moog PolyMoog Poly Analog Synthesizer Vintage Model 203A SN 1355

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via this auction

"Recently purchased from a musicians estate sale. Synthesizer has only been tested through a small practice amp and has not been checked out by a professional technician. Synth makes a variety of sounds. A 1/2" plastic piece has broken off the back bottom corner of case. The 4 adjustable feet on bottom are good. Buttons and switches all there and the lights work. Synth does not come with a carry case or a foot pedal controller."

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E&MM Spectrum Synthesiser Preview

Published on Oct 20, 2019 Reuben Jones

"The E&MM Spectrum is a British DIY synthesizer designed by Chris jordan and released with Electronics and Music Maker magazine in 1981.....

The magazine provided a painted metal faceplate, keyboard assembly, and printed circuits boards. The rest was sourced by the builder using a supply kit provided by the now defunct Maplin Electronic Ltd, UK (see also the Maplin/ETI 3600, 3800, 4600, and 5600S synthesizers).

The synthesizer uses the famed Curtis integrated circuits: VCOs (CEM 3340), VCF (CEM 3320), VCA (CEM 3330), and envelopes (CEM 3310). These chips were used by many companies at the time, including AKAI, ELKA, Ensoniq, Oberheim, Roland, and Sequential Circuits.

Perhaps the closest synthesizer to the Spectrum is the Sequential Circuits Pro~One, both of which use the same CEM chips for VCOs, filter, and envelope; and use a similar two-VCO architecture. However, whilst the Pro~One is known for an extensive modulation section, the Spectrum is very interesting in its own right.

The design makes the most of the CEM 3340 VCOs, with a total of five waveforms, including a SUB square wave. The LFO, with multiple waveforms including random and regular sample and hold (the latter of which produces more defined sequencer like voltages), can be routed in positive or negative polarity to the VCOs, filter, ringmod/noise, and output. The multimode LP, LBP and BP filter is a self oscillating one and can be modulated by the joystick, envelope generator, and the LFO. There are also two sync options, as well as FM, ring mod, and an envelope shaper. The stereo output can also be modulated for panning and stereo FX; and there are eight jacks for external connectivity including CV/Gate in and out, and pre filter in.

In conclusion, I would describe the Spectrum as a drunk and wonky Pro~One. Mine is temperamental, and sometimes has a mind of its own, but when tamed, the Spectrum becomes a very live and organic synthesizer. The tech who serviced it for me said it reminded him of an ARP 2600, and described it as a 'proper synth'. GreatSynthesizers.com describe it as "...a mixture of EMS Synthi, Sequential Pro-One and Roland SH-5" and "one of the most outstanding monophonic analog synthesizers in history".

This audio was recorded directly from the Spectrum in mono, using a TC Electronic Alter Ego delay pedal for some parts. All parts played from the keyboard, or using the LFO to gate the amplifier."

'Analog Ambient' Performance 2 - AJH Synth MiniMod Eurorack Modular

Published on Oct 20, 2019 DreamsOfWires

"All-analogue 2-voice synth performance/improvisation, part 2 of a series of work-in-progress recordings for a future album/release. No overdubs, just 2 patches/parts played simultaneously. Turn on subtitles for a rundown on what's happening. See the previous composition/performance here: [posted here]

The AJH Synth 'Mini Mod' Eururack modular system is like the Moog Modular I could never afford, only better, as it benefits from modern design features, is a fraction of the price, and a fraction of the size. It produces those rich, warm, characterful tones of the 70's I always wanted, and so much more.

Recorded on an iPad using AUM, with EOS2 reverb.

See my music/albums/releases here: https://tomorrowthecure.bandcamp.com
Support my channel on Patreon: https://www.patreon.com/dreamsofwires"

CRUMAR BIT99 (1985)

Published on Oct 20, 2019 Synthesizer Home

Moog One,TTSH ARP 2600,Prophet X,Octatrack , Analog 4 and Euros.

Published on Oct 20, 2019 therudyrude

"In this improv I decided to NOT use any common clock and let them run free!I used a Todd Barton trick on the ERBEVERB cv control of Size with a square wave. It makes a very metallic percussion sound."

Analogue Systems French Connection

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Published on Oct 20, 2019 Joseph McGinty

"Short demo of the Analogue Systems French Connection controlling an ARP 2600.
Currently on sale at Reverb.com"

SN 224 via this auction

"Wonderful Analogue Systems French Connection controller, inspired by the Ondes Martenot. Incredibly expressive and interfaces well with modular synths. Used very sparingly in my smoke free studio."

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Robaux SWT 16+ Build & Demo Videos

Published on Oct 20, 2019 Synth Diy Guy

"Building this super fun trigger sequencer by Robaux!"

Update:

SWT 16+ demo

Published on Oct 20, 2019 Synth Diy Guy

"Taking my freshly built Robaux SWT16+ trigger sequencer for a spin :)"

zlob diode chaos

Published on Oct 20, 2019 Todd Barton

"a little exploration of the new Diode Chaos from https://zlobmodular.com also checkout his instagram https://www.instagram.com/zlobmodular/
and of course please consider supporting my continuing videos at
https://www.patreon.com/synthtodd"