MATRIXSYNTH

Seiko DS-250 Additive Synth - "Falling Hours"

YouTube Uploaded by synthspotter on Feb 18, 2012

"I created this song entirely with the Seiko DS-250 synthesizer. After noticing how few videos of the synth are available, I decided to compose a short piece demonstrating some of its sounds. I used about eight total. The only external effects are reverb and delay.

The DS-250 is one of two or three additive synthesis keyboards manufactured in the early to mid 1980s by Seiko, an electronics company better known for watch making. As synthesizers go, the DS-250 is extremely limited. It has just 16 basic preset sounds, with no edit function to speak of. It has two sound banks (Sound 1 and Sound 2), but each shares the same 16 presets. You can select different sounds for each bank, then stack or split them across the keyboard. Each bank has its own individual audio output, selectable MIDI channel, and controls for volume, decay (three settings) and vibrato (with selectable delay). Sound 1 can be tuned +14 cents, and Sound 2 can be tuned a 3rd, 5th, 7th or octave above Sound 1. There is also a pitch wheel, a chorus switch with three settings (including off), and a transpose button that can shift the pitch up to any key as well as up or down an entire octave.

While the pair of built-in speakers suggests that Seiko was aiming for the home-keyboard market, the DS-250 could also be paired up with the DS-310 module, which gave the user a fairly deep level of editing capability. On its own, however, the DS-250 wasn't much. Some nice sounds, though.

For more information about Seiko DS synths, search matrixsynth's excellent blog, matrixsynth.blogspot.com, or watch his video here: youtu.be/wr1gFuRNjMk [posted here]. Also check out onephatcat's video here: youtu.be/GCd3fmjcyAI [posted here]

'Falling Hours' and this video are © 2012 by Christopher Scapelliti"

DIY Electronic Music Box Inspired by Buchla's Music Easel

via /Manu: "Sigma-blog document's the development of my Electronic Music Box DIY performance synthesizer inspired by Buchla’s Music Easel. Everything is going to be under a 6U rack format engine bonnet. The density of controls is something between Doepfer and MOTM. Color-coding is little from Buchla (blue and red) and I am using nice NKK-switches and Alpha-sliders with LED’s inside (take a look at Henrik Nydells Modulator).

The heart’s of this design are my two Oakley VCO’s that I am going to take apart and give a new life as complex VCO’s. Jörgen Bergfors has designed a beautiful Complex VCO here. The core of my Complex VCO is Oakley VCO. Waveshaping is by Bergfors and Ian Fritz. Two waveshapes can be selected by voltage and mixed to MIX-OUT. The second VCO is simpler with just basic waveforms and Buchla’s timbre generator from Music Easel. Timbre can be modulated by voltage.

8-step VCP sequencer is from Fonitronik. It is an interesting design where you can select Gray code patterns (256 patterns) with voltage.There are three options for every step; normal 8-step sequence, skipped, ADC-controlled gray code. I am going to integrate Electric Druids TAP-tempo clock to this sequencer so that you can choose the tempos on fly.

There are two LFO’s that use the same PIC-chip as in the sequencers TAP-tempo clock. This is a very versatile digital LFO-chip with TAP-tempo/external clock, six waveforms, wave distort and tempo multiplier. More information is here.

To save time I decided to order Doepfer-modules that I am going to adapt in my own design. A-149-1 and A-149-2 generate random quantized and stored voltages as in Buchla’s Source of Uncertainty. Two A-101-2 LPG’s as Buchla’s Low Pass Gates. A-134 PAN can do voltage controlled panning or two signal morphing."

Sigma · EMBox Jam

Sigma · Spanish Sun

Gotharman's Pro One clone: The MiniProphet

YouTube Uploaded by gotharman on Feb 18, 2012

"Tweaking my new Pro One clone. Sequenced by my UltraCyclus
More info:
www.gotharman.dk"

bad robot music maker

YouTube Uploaded by drmoonstien on Feb 18, 2012

"New Project"

drmoonstien on eBay (RSS)

MacBeth micromac Voice Engine & Controller PCB

via Ken MacBeth on Facebook

"This saturday aft- I have now completed both sections of the micromac analogue synth! Seen here now in front of the rear Voice Engine PCB is the Controller PCB. The micromac will be available as a 3U rack module and a desktop module that will be the size of a hose brick!"

korg monotron delay demo

YouTube Uploaded by bowmoneydrums on Feb 17, 2012

"the new korg monotron delay is an analogue beast, and this video demonstration puts it through its paces...this is dry unedited signal right out from the monotron."

via The MATRIXSYNTH Lounge

monotrons on eBay
monotrons on Amazon

Vintage 8-Bit Korg Super Drums DDM110

via this auction
abertronix (RSS)

Vintage BOSS PC-2 Percussion Synthesizer

via this auction

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FREEBASS FB383 MAM TB-303 clone

YouTube Uploaded by jebeq2007 on Feb 18, 2012

"This is a Demo of the functions on the FreeBass FB383 (For eBay). Just a short sequence playing with no added effects."

via this auction

"This Freebass FB383 is a great analog bass synthesizer. It's in mint condition and everything is working perfectly. It includes the power supply and I am also including some extra moog style knobs."

CLICK FOR MORE »

MultiPhaser & Aeither Oscillator by VBrazil Systems

MultiPhaser by VBrazil Systems by Point Source
"Aether Oscillator output fed into MultiPhaser module

***Note that it's a continuous note, all the modulations going on the original signal are made by the MultiPhaser"

Guitar into MultiPhaser by Point Source
"Guitar sounds being modulated by the MultiPhaser"

Pads into MultiPhaser by Point Source
"Some pad chords being modulated by the MultiPhaser

First dry, then wet"