Y!2PC 28 SX-150 sound demo

YouTube via yumyumentertainment
"YUM!YUM!PLANETCHANNEL 28
gakken analog synthesizer SX-150
It's my first pure analog synth.
SX-150
1 VCO(saw only)
LFO(triangle or square)
pitch envelope
cutoff
resonance
attack & decay
external source & output jack
simple synth. This video used SX-150 sound. "

Some Music Using the Gakken SX-150

via John Levin
"I finally got it together to make a piece with the Gakken SX-150. My basic idea was to treat the Gakken the same way I treat my Arp Odyssey: run it through a Line 6 DL-4 in looper mode, with a long repeat time, to emulate tape delay with feedback. Much of the work I do with the Odyssey involves modulating consonant intervals in the filter with a combination of envelopes, sample and hold and the LFO."



You can find more info including another track featuring the ARP Odyssey on John's Things that go him in the night.

Gakken SX-150 Sound Demo

Published on Aug 18, 2013 Wiktorion·8 videos

"I know it sounds horrible but nobody can make the SX-150 sound good without using CV."

Gakken SX-150s on eBay

SX-150 pickbuttons

SX-150 button mod from Collin Cunningham on Vimeo.

"This right here be a Gakken SX-150 analog synthesizer kit - but ya see, I de-installed that resistive control strip deal … added me some good old-fashioned surplus pickbuttons and a bitty trimpot.

Now all me and the dog ever do is play with this thing … well occasionally he runs off to dig up a bone er somethin'. speakin' a which - where is that dog?"

SX-150 synth controlled by Arduino

YouTube via kbroom. You might remember this from this flickr shot post.
"A Gakken SX-150 analog synth controlled by Arduino. The SX-150 has a little reverb and delay added to it for good measure. For a more detailed explanation of what's happening, go to: http://mrbook.org/blog/2008/11/22/con..."

SX-150 button mod

SX-150 button mod from Collin Cunningham on Vimeo.
"This right here be a Gakken SX-150 analog synthesizer kit - but ya see, I de-installed that resistive control strip deal … added me some good old-fashioned surplus pickbuttons and a bitty trimpot.

Now all me and the dog ever do is play with this thing … well occasionally he runs off to dig up a bone er somethin'.
speakin' a which - where is that dog?"

Gakken SX-150

via this auction
"Features
* Size: 4.5" x 6"
* Controls for LFO, pitch envelope, frequency cutoff, resonance, and attack/decay
* Slide controller (pen type electrode)
* Output and external input 1/8" jacks
* Small built-in speaker
* Runs on 4 AA batteries (not included)

Putting it together
Assembly of the kit requires little work - the circuit board comes fully assembled, i just mounted it to the panel and connected the stylus control strip. Power is provided by 4 AA batteries and a small speaker is included in the design. I highly suggest connecting the output to external amplification (this little guy really does sound quite good!). The "external source" jack accepts an amplified signal and converts its frequency into pitch control. Controls for LFO, pitch envelope, frequency cutoff, and attack/decay are included. Each potentiometer gives a wide range of response, so you have a relatively large amount of control over the sound."

Mod me
The simple design seems to suggest that the SX-150 wants/needs to be modded, hacked, and/or customized. Using the stylus/pitch-strip control only gives you a taste of the good sounds you can get from the kit. The SX-150 kit is very easy to use and some modding ideas are bound to come to mind should you get your hands on one. At the very least, you can choose from a number of included decorative decals - and at the more advanced end, schematic and code for using MIDI input has already been posted. I'm sure more sweet DIY add-ons are in the works - very awesome.

The Controller F - A touch pen generates CV and Gate.
- Also has a tiny extenal input that does F/V conversion.
(but also responds to amplitude :-).
VCO F Has saw-tooth output
VCF F Sullen-Key type 12dB/Oct filter. Very much like Korg MS-20 filter.
Envelope Generator F AD type.
LFO F Two output waveforms: triangular and rectangular.
Output F "

signal flow diagram below

CLICK FOR MORE »

MIDI Modified Gakken SX-150 Analog synth

YouTube via StarfireMX
"I added a MIDI in to my gakken sx-150, here is what it sounds like with some chorus and reverb in ableton live.

I was just tweaking the knobs during this. Kick and snare are from live."

Circuit Bent Gakken SX-150

via vtol

some more shots and demo here

Update: YouTube vid below.


YouTube via Vtolus
Circuit bent Gakken Sx-150 Analog Synth

Polyphobia

Polyphobia by Slippery Soles

"Gakken SX-150
All noises on this track generated on the mighty Gakken SX-150"

How to circuit bend a Gakken SX-150 synth

flickr by matt the modulator
(click through for mouse-overs)

"Bend points for the gakken SX-150 simply add a switch that coneects points A and B for each bend and as always check short before soldering Enjoy!"

Gakken SX-150 Analog Synth

flickr set by alienmeatsack
(click for more)

"I had to find out why people talked about this so much. It's cheap cheap cheap but sounds nice."


You can still find the Gakken SX-150 on Ebay.

【シンセサイザー講座（基本編）】Gakken SX-150

【シンセサイザー講座（LFO編）】Gakken SX-150

gakken sx-150 blank template

flickr by HopHedz via the MATRIXSYNTH Flickr Pool, via DJ BackBone on the forum.

"gakken sx-150 blank template from the kit, lay it out 8 to a page =)"

Gakken SX-150 m.ii Wave shape

Published on Oct 17, 2012 by my4trackmachine

Gakken SX-150's on eBay

Gakken SX-150 Analog Mini Ribbon Synth

via this auction

"The Gakken SX-150 is a cool little Analog synth that comes as a mini diy-kit with an odd-ball Japanese language synth magazine. It's an analog circuit including an LFO, resonator-filter and envelopes. It's known for being easily modded."

click these for the full size shots.

Using The GAKKEN SX-150 MkII Synthesizer As Analog Filter | SYNTH ANATOMY

Published on Mar 28, 2018 SYNTH ANATOMY

"One of my souvenirs from my Toyko visit in 2017 was the GAKKEN SX-150, a small analog synthesizer. Beside the instrument feature, it's also possible to use this little instrument as an analog filter.
Here is a little tutorial how you can use it with an Teenage Engineering PO-32...

Join the Patreon page to get access to free sound content (sample & preset libraries, free plugins... & participate on exclusive giveaways) https://www.patreon.com/synthanatomy"

Gakken SX-150 ANALOG synth WITH CV/GATE modification

via this auction

"Gakken SX-150 analog synth in great condition. This unit is almost new and seldom used. My tech (Ramcur on Flickr) performed a modification so that a 1v/octave cv gate signal can control the unit.

The unit comes with the original magazine (in Japanese) and stickers, see the pics for more details!"

Gakken SX-150 Analog Synth with MIDI Kit

via this auction

"Gakken SX-150 analog synth including the original box/magazine it came in. Also included are most (or all I think) of the parts needed to build a MIDI interface for it including Arduino board. Plans and instructions are on this website"

The joy of techno part 3

YouTube via darenager. click here and scroll for more.
" 3rd installment of the series of 10 parts.

Using a Gakken SX-150 with the Machinedrum, the MD is controlling the pitch of the Gakken which is fed back into the MD input for gating and filtering as well as a bit of reverb, delay and distortion.

No mods are required to the SX-150.

The mix levels of the Gakken are a bit inconsistant as I did not use any compression.

Check out my other videos for some similar stuff and a how-to.

Thanks

Daren"