Lately, as you might have noticed, I’m attracted to synthesizers that don’t necessarily use keyboards for input. The Korg Monotron is a $60.00 battery operated true analog synthesizer with a ribbon controller and five knobs to control pitch, LFO rate / intensity, and VCF cutoff / peak. The Monotron will be available in the US this July. For more details checkout this article on Synthtopia.com.
Read on for more Korg Monotron videos. The next one is especially good.
This Monday, April 26, 2010 is the third installment of Experimental Music Mondays at the Kitty Cat Klub in Minneapolis, Minnesota. The line-up includes violin soloist Kip Jones, Ephemeral Structures, and Primidonahue (Michael Donahue). The music will start at around 9:00pm and there’s no cover to get into the club.
Yesterday afternoon I had a fantastic session with Ephemeral Structures. Although we have all worked with each other in several capacities, this is only the second time the group has performed in eight years. The result of yesterday’s session were pretty inspiring, so we are considering producing an album. The project includes Kyle Herskovitz (also know as DJ Zenrock) on turntables, Nils Westdal on bass and electronics, and me on electronics. The photo shows Kyle playing his turntable with a rubber band. I’ll share a segment of what we captured in a upcoming entry.
I just got a note from Matt Musick at Vice Magazine regarding a feature on Devo just posted on Motherboard.tv. I haven’t had a chance to properly watch the entire feature, but I’ve been anticipating this, and will give it a good watch as soon as I am able. Here’s Matt’s note:
Hello John. I really think the Audio Cookbook audience would get a kick out of this piece and wanted to pass your way. The new episode of Electric Independence documents a rare look inside Devo’s studio. Mark Mothersbaugh himself gives us a tour through the space and shows us some of his favorite (and strangest) synths and circuit bending noisemakers. The guys even tell us some funny stories of their early Akron days, like the large girls (or “mother hens” as they like to call them) who would circle their equipment to warm it up before playing on those cold Ohio nights.
Watch Electric Independence: Inside Devo’s UFO Studio, They Whip It New Wave, But With New Hats
This weekend I built a POSC Pocket Oscillator by Sonodrome as a prototype sound design element for an interactive dance collaboration. The circuit is incredibly simple, as you can see by the photo, but the variety of sounds possible with the two pulse wave oscillators is impressive. The first oscillator is controlled by by the players skin resistance between two zinc plated contacts, while the second is controlled by an LDR (light dependent resistor). Rather than running independently the first oscillation modulates the second.
After testing the build, I temporarily setup the POSC in a small cardboard box and started making sounds. During one test I found that a circuit could be made with two people. when one person touches one contact and a second person touches the other, then the people touch each other the circuit is made with a lot of resistance creating a much slower pulse. Here’s an unprocessed sample edited out of my initial experimentation.
Although I had seen photos of the Rev 1.2 mushrooms (mine was made prior to Rev 1.2), I didn’t expect to see Chenrezig, the Tibetan Buddha of Compassion, silk screened onto the circuit board of my Sequential Circuits Pro-One, or the Buddhist mantra, “Om Mani Padme Hum”, etched into the board in Tibetan characters. Even better, Sequential Circuits founder and MIDI pioneer Dave Smith initialed the circuit board twice in the upper left hand corner.
I should mention that this is my second Pro-One. The first one was stolen, and I bought the second one to replace it since I needed that exact sound for the band I was in at the time. The new one was missing a mod wheel. Later one of the knobs was broken off at a show or studio session, so I’m pretty excited to have it restored to it’s former glory.
Checkout the gallery to see the photos of the restoration process. The second and final session of the restoration happened the moment I received the missing parts. These included a replacement modulation wheel (although I think it turned out to be a pitch wheel), a replacement potentiometer, and a missing knob.
The first thing I did was install the mod wheel. Then it was time to swap out the broken pot. I had to remove the circuit board to do this, so while I had it out I thought it would be a good idea to clean things up a bit, so that was the majority of time spent. Finally I removed the old pot, replaced it, and reassembled everything, cleaning things up along the way. Before I put all the screws in I gave it a quick listen to make sure it still worked and the new parts were functional. It was an evening’s work, but more like fun to be honest. Enjoy the pics.
What good is a Weird Sound Generator if you’re not using it to make weird sounds? Sometimes it is nice to just hold it on your lap and stroke it gently. That aside, it’s quiet useful once you plug it in and start twiddling the knobs. Here’s a piece I created by tuning the each of the four oscillators on the WSG and then fiddled with the filters. At the same time I made some adjustments to a phaser that I was running it through in Ableton Live and topped it off with ping pong delay.
I’ve created a slideshow that illustrates the process of building my Weird Sound Generator, from the unopened box through completion of the project. The third photo in the series (shown below) shows the items that came out of the box including all of the components for the WSG and a CD by Ray Wilson titled Electroluminescence.
Continue reading
ACB readers are sure to be aware from previous posts that my Korg MS2000 is one of my favorite and most indispensable synths. Embarrassingly I seem to have turned it into a drink stand during a firmware update. I used the firmware upgrade utility on korg.com to attempt the update. The process failed part way through and now my beloved instrument is a brick, well more like a cement block, that shows a blank back-lit display after turning it on. I’ve tried resending the update at all the available speeds that the utility allows with no impact on the results. I also tried a factory reset to no avail. I’m going to try again tomorrow with a different MIDI interface, but I’m afraid that this isn’t going to be an easy fix. I’ve searched the forums for a solution, but haven’t found anything. If anyone has any suggestion, please let me know. I’m desperate to get this thing up and running again.
This weekend I completed building a Weird Sound Generator, or WSG, component kit from Music From Outer Space. The kit comes with a printed circuit board and all the electronics, including resistors, capacitors, diodes, ICs, potentiometers, switches, and wires. The rest, like the housing, faceplate, and soldering is up to the builder.
I built a box similar to the recommended specifications and cut the faceplate out of an old computer case. The wood I used was scraps that I held onto and recycled. In fact, I managed built the entire instrument without buying anything beyond the kit itself. Even the stain, nails, glue, screws, and backing board were materials that I had hoarded from previous projects over the years.
It took me about thirteen hours to complete. But, it was a fun thirteen hours of playing with my soldering iron and power tools while following instructions, or coming up with a way to cut through metal, or mount a nine volt battery inside an already cramped case. And, although the case isn’t perfectly square, and the leads are more than a bit tangled, I’m pleased with the little noise maker that I now have at my disposal. In the next entry I’ll illustrate the sequence of events that took place in building this device. Oh yeah… and sounds.
I have finally started restoring my Sequential Circuits Pro-One. My plan is to get it as close to mint condition as possible and start using it again for recording and perhaps performing. Once I started using the Korg MS2000, I neglected the Pro-One and it fell into disrepair. Over time the key contacts became dirty and inconsistent. At some stage one of the knobs was broken off and lost, leaving a stub of potentiometer protruding uselessly from the control panel.
The first thing I did was clean the pots. For you laymen, pots is short for potentiometers. In other words, I wasn’t diverted by dirty dishes. To clean the pots I removed the knobs and then squirted a few drops of a greaseless lubricant called LPS-1 around the post. The stuff works wonders on crackly volume knobs and was recommended to me by the electronics experts at AEI Electronics in Minneapolis years ago. I’ve been using it ever since. After applying the LPS-1 I made thirty or more rotations of the pot from zero to maximum so that the dirt particles were worn away by the fluid.
I put the thing back together and did some tests. The knobs no longer had anymore crackling going on, so that was fixed, but the keyboard was horribly inconsistent. The Pro-One uses a J-wire keyboard with open air connectors that are prone to collecting dirt (or residue from malted beverages spilled over the keys). For a close up view of the Pro-One J-wires check out this post on MaxtrixSynth. Another problem is that the J-wires can become less springy, making the connections a bit weak. I used used q-tips with a drop of LPS-1 to clean each J-wire and the metal bar that they connect to when the key is depressed. I also bent the J-wires slightly to improve the tension. After all that I tested it again to find it working flawless, although still a little difficult to tune. Next up I’ll be replacing the missing mod wheel, the broken potentiometer, and the missing knob.