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Gakken SX-150 Synth MIDI Mod

MrBook has shared documentation on his awesome hack to add MIDI to the Gakken SX-150 synthesizer.
Here’s what you’ll need to turn the Gakken SX-150 into a MIDI synthesizer:
- Gakken SX-150 Analog Synthesizer Kit
- Arduino (This one is the classic, but my favorite ones, are the ones from Modern Device)
- MCP4921 12-bit DAC
- 4N28 Optoisolator
- 1/4” Audio Jack
- DIN 5 Pin Chassis Socket (Female MIDI plug)
- Diode (N4148)
- Resistors(220 ohm, 100k ohm and 3.3k ohm)
- Wire, breadboard (or wherever you wanna do the circuit), soldering stuff and patience.
Details at MrBooks’ site. See this previous post for a demo of the Gakken SX-150 being sequenced by Ableton Live.

DJDeedle’s latest Deedlecast is a 007 James Bond electronica megamix.
And like the James Bond movies, it’s sexy, it’s silly, and it’s swanky - thanks to the classic brassy scores of John Barry.
Every Friday, DJDeedle posts a 30 to 40 minute show, called a “Deedlecast,” featuring mashup, chillout, downtempo, or dance mixes and remixes of every conceivable kind.
This week, DJDeedle takes some of the iconic Bond themes and sounds as his fixed point and moves the musical world rapidly around them. And because going to the movies just isn’t the same without it, if you listen carefully, DJDeedle’s even thrown in the popcorn.

It’s the weekend, so it’s time for a bit of Saturday Synth Porn, right?
This is a bit of unofficial, underground synth goodness, the first shot of Dave Smith Instruments’ #Tetr4 synthesizer.
There’s no announcement for the #Tetr4 at the DSI site yet, so we can’t vouch for the accuracy for this info, but the #Tetr4 is rumored to be like a 4-voice Mopho, and to be priced at $800.
Hot or Not? Leave a comment with your thoughts!
Moby - Pale Horses
This is the latest video from Moby, for Pale Horses, from Wait For Me, out June 30 on Mute.
This is a classic track from Air, Le soleil est près de moi. Read more…
KORG DS-10 Plus Introduction
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Filed under: Software Synthesizers & Samplers, Virtual Instruments
Arturia has announced the 10 Year Suite, a box featuring 8 of the company’s software instruments.
The set includes:
- Minimoog V
- Moog Modular V
- CS-80V
- ARP2600 V
- Jupiter-8V
- Prophet V
- Prophet VS
- Also included the innovative Brass and the powerful Analog Factory.
10 Year Suite is available for Windows and Mac (VST/AU/RTAS) for $699 USD / 549 EUR.
Details below. Read more…
We’ve got something a little different today for Synthtopia’s Free Music Friday.
Each week, we try to highlight some of the great music that people are making available as free downloads around the Internet.
This week we’ve got something special, though: a huge collection of awesome electronic music from Synthtopia readers like you: Read more…
Ready to control your synthesizer with a blowtorch?
This video documents a proof of concept test for the Thermatron, a vacuum tube synthesizer controlled by a flame, created and built by Lorin Edwin Parker at Electric Western.
The right mixture of gas, air pressure, high voltage, chemical ions and heat vary the flow of current through a flame. This current feeds into the grid and / or plate of vacuum tubes controlling an Electric Western Phantastron Synthesizer. Read more…
Moog Rhymes With Vogue
Since the 60’s, musicians have debated about how “Moog” should be pronounced.
Some think it should be pronounced with an “ooh” sound, like moo. Others rhyme it with vogue.
Dr. Robert Moog preferred the latter:
“It rhymes with vogue. That is the usual German pronunciation. My father’s grandfather came from Marburg, Germany. I like the way that pronunciation sounds better than the way the cow’s ‘moo-g’ sounds.”
So, why the confusion?
Maybe this 1970 Moog pop album, The Plastic Cow Goes Moooooog, has something to do with it:

Girl group synth geek twins (!) Tegan & Sara put this question to rest (hopefully!) by calling up Moog Music to check:
Do you know any Minimoooooog players?




