Sequential Circuits Prophet 600 SN 5371

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"So yes, it seems to work great with the original Z80 CPU, but it behaves a little strangely with the mod installed. Basically, with GliGli, oscillator pitch seems slightly erratic and janky. Sounds a little like random/noise modulation. Sometimes you can hear it on the first note you play, sometimes you can't hear it until you have played all six notes. Even weirder, this issue also goes away a bit when pitch bend is not perfectly centered. I think a multiplexer IC on the front panel PCB might be causing these problems, but since It doesn't have this issue when it's stock, I'm not so sure. I haven't messed with it. I'm including a couple replacements just in case.

I bought my GliGli mod from a pro builder on Reverb, so I don't think it was assembled/soldered together wrong. I'm pretty sure I installed it correctly as well! I'm stumped.

This synth also had a slight whine in the signal path when I first got it, but after I installed GliGli it went away and never came back, even after I reinstalled the original CPU this evening. Even when it was present, it wasn't too noticeable. (Hopefully it won't return!)

Cosmetics and other info:
This Prophet, serial number 5371, was built some time in mid-1984 and is in really beautiful cosmetic condition. A couple signs of use here and there but nothing very noticeable. Some of the lower black keys are a little dull-looking compared to the rest. Two front rubber feet were missing so I replaced them with adhesive ones. A GliGli "cheat sheet" from Synthgraphics is also now on the front panel.

All keys work!! Battery seems to be holding patches fine as well.
If you haven't had a Prophet 600 before, be aware that (when it's stock) it takes several seconds to boot up and tune each voice. This is normal!"

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Sound Library for the Kawai K5000S

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"Massive library of sounds on floppy disk! Also included is a powerful editor & librarian, Soundiver! Jewel cases are NOT included and disk colors may vary."

Pictured:

Pads & Comping
Session Tool Kit
Bass, Solo & Lead
Classic Sounds
Collection 1
SoundDiver Editor
Supplement Disk with:
A. Demo Songs
B. Extra Single Patches
C. Factory Preset Backup

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YAMAHA Loop Factory AN200 Desktop Control Synthesizer Analog Physical Modeling

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Waldorf Microwave XTk Wavetable Synthesizer

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"Programmable arpeggiator, 4 integrated digital effects, 12dB low pass, wave shaper 12dB low pass, 32 Ram wavetables, 64 waves per, 500 waves total. This is basically brand new."

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ROLAND JUPITER 8 SN 090598 / 090995

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"Serial number 090598. Although it has an old style DYMO label on it with the number 090998 which seems to be a type-o. According to an online serial number database this is an early 12 bit version and was manufactured in August of 1981. The DYMO label was probably put there for inventory purposes by its previous owner.

The studio which I purchased it from said it once belonged to a famous Canadian musician but I’ve not been able to verify this 100%.

It has been in my collection for just about 5 years. The Jupiter 8 has been modified at one point in time (not by me) to have chromed/mirrored end cheeks. It also has a multi pin XLR type connector installed at the rear which at some point may have been used to interface with either a sequencer or other piece of gear.

This jack was attached to a custom hand wired circuit board. That board was removed by my technician friend when he installed the ENCORE midi retrofit. The synth works as it should and considering its age, it is in great shape.

There are no tuning stability issues and it calibrates/tunes incredibly fast and stays in tune. All of the slide potentiometers function as they should and there are no scratchy pots at all. Every tact switch functions correctly and all keys play as they should. There are zero functional issues with this synth."

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Nord Modular G2 Engine SN ME11147 w/ Original Box

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Akai S700 QD Emulator Install | Why?

video by Espen Kraft

"My Akai S700 has served me well, but the Quick Disk drive did not work anymore. As in most of these drives, it's the belt that has almost disintegrated over the years .
Since I already have a S612 and a working floppy drive for that I thought I'd just install a QD emulator this time, even if I really don't like to see emulators ruin the looks and original design of this 80s gear.
The install is simple enough, even if I probably dismantled my S700 more than I had too. ;-)
It works fine and now loading and saving is totally free of any mechanics that can fail, but the joy of using those QD floppies is also gone. You decide how you want to deal with YOUR broken drive. :D

I got the emulator here: [on eBay]
Or you can email Chris directly at: cpmagneticmedia@gmail.com"

Memorymoog Sound Design: Part 2

video by wedream2

Part 1 here

"In this second video I talk a little more about sound design, demonstrate mostly new sounds (not shown in first video) as well as a few improved sounds from the previous video, and discuss use of the latched arpeggiator in combination with the cyclic keyboard mode, generating interesting sequences involving multiple triggering of the same key within a repeated pattern."

wedream2 Memorymoog Sound Design posts

wedream2 synth demos

Sequential Circuits Prophet 5 Rev 2 SN 0372 w/ Midi & Mods

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video by teretubby

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"Late 70’s Prophet 5 revision 2. Has been modded and we haven’t been able to track down how it was modded exactly. Has MIDI and I was able to control this with an external keyboard. All 5 voices work, has some presets, not sure if they’re original or not....filters work, lfo works, bender works. Has a knob on back (“b range”) that will make the pitch change when you turn it. Has a kill switch on the back that just cuts the sound out. Somewhere along the way this board got a rev 3 heat sink installed in the back. If you are into actually playing these you’ll know that a heat sink is an improvement. The keybed is not in tip top, optimal condition, but still works with the exception of one key. I was told it just needs cleaned and this key will work. This was serviced with a deep cleaning, re-built power supply, some components replaced and some pots disassembled and refurbished. Amazing sound, I only scratched the surface with the video demo. This actually stays in tune way better than you’d probably expect. It will drift from time to time, but after a few tuning cycles, it’s very stable."

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ASM Hydrasynth 49-key Poly Synthesizer

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