Custom Oberheim SEM

In case you missed it, there were some very interesting items pictured in this post, particularly a blue Sidstation and this custom Oberheim SEM. The title link of this post takes you to jesper's page on the SEM with more info.

The following are some comments from jesper in the previous post:
"The other "weird stuff" in the pic is my modified SEM; A "butchered" MS-10 which was wrecked when I bought it and the keys has saved dozens of other machines... ...and yes, the blue Sid is one of two existing AFAIK. The blue panel was a test version produced when Elektron was about to launch the SidStation Ninja (which is black). The former owner picked this up at Elektron in Gothenburg, saw the empty blue body on a shelf and asked if he could have that instead of the stock silver one... I wasn't late to get it when it was up for a trade."


BTW, don't miss the other cute shot of jesper's kids with an EDP Gnat and Wasp on electronic obsession.

Juno 60, controlled via Ableton Live

YouTube via RedRoomNW.
"Running through the abilities and sounds of the Juno 60, connecting to it via the DCB port with a MIDI adaptor and then sequencing with Ableton Live. From Live I am looping a simple Bobby O style rif and running the Juno through its ADSR settings, waveforms, noise filters, chorus, up/down octave, etc..."

U-MAX

Another shot of the U-MAX via JMCO.

MIDM

Title link takes you to a video of the Elektron Machinedrum via Rui on AH.

CONDOR SAXOPHONE SYNTHESIZER by HAMMOND

via this auction.
"For sale here is an ULTRA rare synthesizer (the VERY FIRST) for any wind instrument. It was made in the very early seventies buy Hammond (the organ folks). The synth unit is stored in it's own locking carrying case...the key is included. The power cord also stores in it's own locking compartment...the same key locks this too. When performing, the synth unit is locked to the top of the extended carying handle. The synth unit has slider controls for intensity and rate of vibrato, control of treble and bass, tone and volume, sensitivity, mono or stereo signal. It also has organ type switches for Repeat, attack, tremolo/vibrato,sub octave, dyna mute, fuzz, bass sax, tuba, bass clarinet, basson, English Horn, cello, natural amplify, horn, oboe and soprano sax. The front of the unit has a stop bar to cut signal and two micro inputs from the horn's contact mic . It does not include a contact mic. The only missing part is one of the pulls at the side of the unit that release the handle so it can be raised to withdraw the synth unit."

Davis Development Analog Sequencer

Note: Auction links are affiliate links for which the site may be compensated.

via this auction

"Up for auction is an analog sequencer made by "Davis Development" for use with analog synthesisers that have cv/gate inputs. This unit appears to be either A: a prototype, B: a one-off someone made in the late seventies or C: from a kit. Not sure which, but, have you seen another? I can't find anything online about it, but it seems to have been built by a serious pro. The main board is all point-to-point wiring, but very nicely done (this definitely was not an amateurs work). It has been in fine working condition since I've owned it, although it does show its age here and there (see pics).

It should be noted that this sequencer apparently puts out a "volts per hertz" output at the "pitch out", and a "gate" at the "trig out" (both 1/4"). This explains why it works fine with the EML-101. The EML, Korg MS-series, and a few others use this type of interfacing. ARP, Roland, Moog, etc. use a "volts per octave" system, which seems to be the more common. It works with that type as well, but adds a (sort of) "ring-mod" effect to the oscillator(s) its driving. Just thought you should know, to avoid future issues (don't want any unhappy customers...) :~)

O.K., back to the details. It has a momentary button under each of the 8 steps (handy for "tuning in" your sequence), as well as a "random" on/off button, "clock" on/off, and a "range" thumbwheel switch (for making it 4-step, 2-step, 5-step, etc.). The CV output is not quantized."

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Vermona Synthesizer

Title link takes you to shots via this auction.

"This auction is for vintage analog synth VERMONA “SYNTHESIZER”. It’s made in DDR (Germany) in 80s. This 2-VCO monophonic analog synthesizer (like Moog Prodigy, Oberheim OB-1 etc.) have VCF with 24 dB/oct filter, single LFO and classic ADSR VCA envelope. Sound is really original, warm, deep, analog!

Condition is very good and full working. All keys and knobs work fine. Photos are actual. Instrument has original configuration: without midi or CV. Power - 110/220V. Out - 1/4 Jack."

As always be careful. This one is a bank wire transfer.

Casio MT-600 Filter Mods

YouTube via rolandsh1000.
"This is a demo of the effect of some circuit modifications to my Casio MT-600. Taking control of the onboard analog filter turns this thing into an altogether different keyboard. I've documented some of these mods here"

Kurzweil 250 RMX

via this auction.

"When the Kurzweil K-250 was 1983, the music industry was astounded by its ability to emulate acoustic instruments with extraordinary accuracy. The K250RMX is a rack mount version of the K250 keyboard. The instrument features very high quality sounds utilizing Kurzweil's exclusive Sound Contoured Modeling technique."

Sequential Circuits Pro-One Modded

Title link takes you to shots via this auction.

"It has a little modification on it, it's got mod Ext CV Amt nob on top right above the wheels, MOD CV INPUT, VCO A switch, PB CV INPUT, PB CVIN OFFSET switch on the back."