Sequential circuits went out of business in 19 jet sequential circuits, inc 3051 north 1st street san jose, ca 954 408 9465240 telex. With 2 vco with layerable sawsquare and sawsquaretri waveforms and a noise generator, 1 lfo trisawsquare, 2 adsr envelopes routing to vca and vcf, a minisequencer 2. Flipflops, latches and counters and which themselves can be made by simply connecting together universal nand. The proone was a two oscillator monophonic analog synth. Simple sequential logic circuits can be constructed from standard bistable circuits such as. A photographic tour inside the sequential circuits proone. The prophet5 was created in 1977 by dave smith and john bowen at sequential circuits, who aimed to create the first polyphonic synthesizer with the ability to store and recall patches. Korg, asked for some design changes and a name change, and sold the japanesemade synth as the split8. The pro one is a powerful and very versatile analog mono synthesizer from the early. Powerful machine, a bit underrated for years, now considered as a classic analgo machine. The sixtraks patches and sequences can only be backed up through midi. This process was performed by an expert vintage synth tech and took hours.
An owners guide for the operation of the equipment. Find great deals on ebay for sequential circuits pro one and behringer pro 1. The end result is an instrument thats better than the rest and is priced accordingly. Pushing a button gives access to a bank with 40 patches. This is the only means of editing sounds, without which you are stuck with the 80 presets and whatever may be in the 20. Sequential circuits 400 drum tracks ownersuser manual contents. The synthesis as based upon two vcos, a 4pole filter, two envelopes and a lot of modulation. My personal programmed patches with sequential circuits prophet 600 filtered with a lexicon mx 200 delay plus phaser. It has two vcos, a great 4pole lowpass filter, two adsr envelopes one for filter, and a compact.
Pro one keyboard cable including delivery to anywhere outside the usa. Inside the sequential circuits proone monophonic synthesizer. It has been emulated in software synthesizers and analog hardware. Sequential circuits pro one repair and reconditioning buying a mint pro one was not an option at todays high prices, but i found a good deal on ebay and was convinced that i could recondition it myself. They took the guts of the prophet 5 and squeezed it into a chassis half the size to create one fat monosynth. Inevitably adds some delay to the slow tokens makes circuit slower than just the logic delay called sequencing overhead some people call this clocking overhead but it applies to asynchronous circuits too inevitable side effect of maintaining sequence. Here are a few sounds from this vintage sequential circuits proone synthesizer.
The sequential circuits pro one annotated manual annotations in bold square brackets by jet. Also on the back panel is the midi interface in\out, a stereo audio out jack which doubles as a headphone jack, and a footswitch sustain jack. Released in 1981, the pro one featured a single voice but two oscillators for added sonic flexibility, a fourpole low pass filter, two adsr envelope filters, along with an arpeggiator and a very. The pro one was basically sequential s attempt at taking their legendary prophet 5 polysynth and packing it into a compact, inexpensive, monophonic analog synth. Unease pro one page very good page with many infos and demo sounds pro one patches. Sequential logic sequential circuits simple circuits with feedback latches edgetriggered flipflops timing methodologies cascading flipflops for proper operation clock skew asynchronous inputs metastability and synchronization basic registers shift registers simple counters hardware description languages and sequential logic. Early sequential circuits proone power supplies post by xpander fri nov 02, 2007 8. Early sequential circuits proone power supplies post by xpander.
An important thing to note with sequential circuits is that duration of the activating pulse should be low enough so that the secondary inputs do not change state in same activating pulse. It has two dead keys in lower register, and needs patches reinstalling, which is apparently straight forward but i havent got around to it in truly superb cosmetic condition for its age see photos will not post this synthesiser, collection only. Im in the process of creating a plugnplay keyboard replacement kit using a modern keybed and all cabling and mounting accessories. An eraser removes grime and oxidation from contacts. Jul 27, 2014 this video demonstrates and documents pea hicks sequential circuits proone synth patches, inspired by the work of vince clarke on yazoos dont go. Most of these replacement keys are used, but in fine condition. Sequential, liking what the japanese manufacturer had done with their design and worrying that they might market their synth with one of their competitors ie. Guidelines for selecting good but not necessarily optimal state assignments. Generally, i advise the person enquiring to take a look at either the moog prodigy or the sequential circuits pro one though i know that our editor isnt too keen on the prodigy because it doesnt have a white noise source. Find great deals on ebay for sequential circuits pro one and behringer pro1. The sequential circuits proone annotated manual annotations in bold square brackets by jet. Sequential was also pivotal to the development of midi in 1982, which synchronizes electronic instruments by different manufacturers.
The pro one was basically sequentials attempt at taking their legendary prophet 5 polysynth and packing it into a compact, inexpensive, monophonic analog synth. Sequential circuits proone keyboard replacement 2 november, 2015 20 may, 2017 xlnlars update april 2017. The sequential circuits inc proone has sealed its place in history as a. Allowing the clock pulse to be too long would result in incorrect circuit function, as there will be two different secondary input values for one clock cycle. Initially, they developed the prophet10, a synthesizer with ten voices of polyphony.
Nov 02, 2015 sequential circuits proone keyboard replacement 2 november, 2015 20 may, 2017 xlnlars update april 2017. Note that if we took this approach we would have to do a complete design for each assignment and compare all the resulting designs. Well, the pro8 is not really an sci product basically, the story is that the japanese manufacturer who sequential circuits subcontracted to make the sixtrak borrowed some of the core design and components to create the pro8 so as to make a more appealing product for their market and when sequential was presented with this changeling child, they asked. A five voice analogue synthesiser which had patch memory.
Sequential circuits prophet 600 incredible fantastic. Yazoo dont go synth patches for sequential circuits proone. The word sequential means that things happen in a sequence, one after another and in sequential logic circuits, the actual clock signal determines when things will happen next. Fully disassembled, cleaned inside and out, and meticulously serviced and reassembled. The sixtraks over all dimensions are 28 x 12 x 4 12. It gave me confidence to tackle even harder projects.
Sequential circuits pro one vs pioneerdsi toraiz as1 by inhalt duration. It was their plan to have that that manufactuer design a synthesizer more targeted at the japanese buyer. Around 198384 sequential circuits, in order to break into the japanese market, shipped the curtis sente cem 3394 chip and the firmware for the sequential sixtrak to an other japanese manufacturer. However this synth has too many limitations on basic needs.
The prophet5 was the first fully programmable polyphonic synthesizer and the first musical instrument with an embedded microprocessor. Has info on updates for the prophet 2000 and single cycle waves for the prophet vs sampler noteits sequential circuits page. Sequential circuits proone keyboard replacement techsmechs. Available for download as wave file and soon as sysex file as i update my rom.
This is similar to a juno 1 but it has a 5 octave and 61 note keybo. There are several different types of keys used on the sci keyboards, so you will need to make sure you order the. The depth and complexity of the pro 2 could make it dave smiths most sophisticated monosynth yet. Sequential logic circuits return back to their original steady state once reset and sequential circuits with loops or feedback paths are said to be cyclic in nature. Blake, bishop clarence mcclendon, ernest pugh, kurt carr. Prophet5 synthesizer is a computer controlled analog synthesizer. I purchased it two years ago in very poor condition, despite its sellers claims to be 100% ship. Home manuals sequential circuits prophet5 presets 1. This section contains 20 patches for the proone ranging from instrumental imitations to sound effects. Sequential circuits prophet 600 incredible fantastic analogue. We now know that in sequential circuits changes occur only on the application of a clock signal making it synchronous, otherwise the circuit is asynchronous and depends upon. Jun 04, 2014 my personal programmed patches with sequential circuits prophet 600 filtered with a lexicon mx 200 delay plus phaser.
From dave smith of todays dave smith instruments, the sequential circuits pro one is a lowercost, monophonic adaptation of the classic prophet 5. Like a lot of sequential circuits and arp synthesizers, the sci proone triggers a note when a jwire contacts a bus bar. Sequential circuits prophet 5, prophet 10, pro one new fuse holder black. Autumn 2003 cse370 vi sequentai llogci 1 sequential logic sequential circuits simple circuits with feedback latches edgetriggered flipflops timing methodologies cascading flipflops for proper operation clock skew asynchronous inputs metastability and synchronization basic registers shift registers simple counters hardware description languages and sequential logic. Begin manual begin manual begin manual title page model 100 sn 1 and up. This unit is only one of around 10,000 made and then, who knows how many of those are still around, this monophonic imp of a keyboard is the cheapest possible way short of resorting to a virtual synth to get your hands on the legendary analog sound of dave smiths sequential circuits keyboards. We are often asked which fully variable monophonic synthesiser we can recommend. Sequential circuits pro one 1981 monophonic 37 keys synthesizer. Sequential circuits pro1 emulated in the uhe repro1. Sequential circuits pro one synthesizer service manual contents. The sequential pro one is a wicked little monosynth. When dsi announced the pro 2, many considered it to be the longanticipated successor to the esteemed sequential circuits sci pro one from the early 1980s.
The mod expands the memory from 40 patches prerev 3. Dave assembled the first one in his apartment back in 1978 just in time for the namm show where dave introduced the the world to the very first computer controlled analog synthesizer. Early sequential circuits proone power supplies vintage. The prophet5 is an analog synthesizer manufactured by sequential circuits between 1978 and 1984. Heres what hicks has to say about the custom patches. Sequential circuits prophet 5, prophet 10, proone new fuse holder black. Sequential is an american synthesizer company founded in 1974 as sequential circuits by dave smith. Sequential circuits pro one vintage synth explorer. Now i have a finely tuned sequential circuits pro one in mint or at least near mint condition, on an indie rockers budget that was brought back to life with my own hands. Its principal sound sources are two voltagecontrolled oscillators vcos, referred to as osc.
Sequential circuits pro fx ddl ambience package effects unit ownersuser manual. Products for the sequential circuits proone replacement keys parts. About 6,000 units were produced across three revisions. This is a vintage analog monophonic synthesizer from the 80s. Theyre drawn up to match the synthesiser he used, the sequential circuits pro one, but you can convert his ideas and patches to your own machine to follow. Overview and tutorial of the sequential circuits pro one synth. Monophonic synthesizer released in 1981 and supposed to be placed on the market for small cheap synths available to the general public. In 1978, sequential released the prophet5, the first programmable polyphonic synthesizer, used by artists including michael jackson, madonna, and john carpenter. Consist of a combinational circuit to which storage elements are connected to form a feedback path.
The pro1 was sequentials answer to the roland sh101 and moog prodigy. Sequential circuits prophet proone sequential circuits released amongst the first truly polyphonic synthesisers where a group of voice circuits 5 to 10 of them were linked to an onboard computer that gave the same parameters to each voice and drove the notes to each voice from the keyboard. Sequential circuits pro for sale in uk view 21 bargains. A locally cached version of presets 1 is available at. The sci pro one is an analog monophonic synth, similar in what a monophonic prophet 5 would be. Next states and outputs are functions of inputs and present states of storage elements 54 two types of sequential circuits. Replacement keys these plastic keys will replace broken ones on your keyboard. Mar 26, 2015 the sci pro one is an analog monophonic synth, similar in what a monophonic prophet 5 would be. The pro one, introduced in 1981, is a twooscillator monophonic subtractive synth. Sequential circuits proone model 100 1981 monophonic portable synthesizer. It comes from the same period and genre as the roland sh101 and moog prodigy. This video demonstrates and documents pea hicks sequential circuits proone synth patches, inspired by the work of vince clarke on yazoos dont go.
By special request, heres another yaz track recreated w the sequential circuits proone synth. The erasers on the right are available at stationers or art supply houses but arent as abrasive, skinny, or sharpenable as the typewriter eraserstik shown to the left. Sequential circuits pro one restoration arch frenemy. Quite at the end of the great analog aera sequential circuits presented their first and only monophonic in 1981. This page contains information about the presets 1 for the prophet5 from sequential circuits. Well, the pro 8 is not really an sci product basically, the story is that the japanese manufacturer who sequential circuits subcontracted to make the sixtrak borrowed some of the core design and components to create the pro 8 so as to make a more appealing product for their market and when sequential was presented with this changeling child, they asked. The housing was dirty, the pots were scratchy, the unit only powered up intermittently, the audio was buzzy, the keyboard keys were uneven. For those of you who want to edit the sounds on the max, you will need sequentials model 920 software and an ancient commodore 64 computer or you can use mark of the unicorns unisyn software editor for macpc you can even use modern midi controllers like the oxygen8. Jimmy told us the former owner stated that the modification was performed by sequential circuits. A fivevoice analogue synthesiser which had patch memory. It features deep modulation options, a basic arpeggiator and step sequencer, cvgate control and more.