100SILEX, de 0 ŕ 100 s: parts
1469 RADIO KNOBS (knobs.htm)
radio knobs, old vintage radios, antique radios, Play Things Of Past
1386 Retro Synth Ads: Sound Master Memory Rhythm SR-88, Keyboard 1982
Sound Master Memory Rhythm SR-88 drum machine 1-page advertisement from page 67 in Keyboard Magazine August 1982.
Hmmm. Not sure how I feel about this ad. There just seems to be a lot going on.
For example, am I supposed to know who "The Rhythm Section" is? The fact that they include themselves in an already long ad title suggests they must be some kind of a big deal. And then you find their name again in the bottom left-hand corner:
"The SR-88. Another innovative product from The Rhythm Section by Sound Master Distributed exclusively by JTG of Nashville."
So, let me get this straight. JTG of Nashville is the distributor of the SR-88 which was created by The Rhythm Section which is somehow owned or operated by Sound Master.
That is waaaaay to much information. Sounds like something political is going on there, and readers unfortunately get stuck in the middle of it.
There also seems to be a lot of ad-copy which actually doesn t give me much information. Reason #4 gives readers the most info including instant stop/start, variable tone and output switches, and a write/play mode indicator. The most I glean out of the four other reasons put together is: 16 rhythms, clock pulse and a price of under $200.
The actual specs that are probably most important to potential buyers are inexplicably shoved into the bottom right-hand corner.
Luckily for me, there are a few resources on the Web with more information about this beast. Unluckily for blog readers, as soon as I started looking for more info, I got swept up in a certain SR-88/Boss DR-55 controversy.
Comparing the SR-88 and Boss DR-55
One of the first Web sites I hit while looking for info on the SR-88 was Dubsounds.com. The site includes a great little write-up on the SR-88, but, more interesting was finding out about a little controversy about whether the SR-88 or the very similar Boss DR-55 came out first.
The two do seem mighty similar in functionality. For comparison purposes, I did a quick search on MATRIXSYNTH to find more photos. . A great photo of a gray SR-88 can be found in this December 2005 SR-88 MATRIXSYNTH auction post and the less common, but definitely more cool, blue SR-88 can be seen in this January 2011 MATRIXSYNTH auction post.
Comparing the two to the Amdek RMK-100
Interestingly, it s not just these two machines that look and function similarly. In this May 2009 MATRIXSYNTH SR-88 auction post commenter "PAC" notices:
"Interesting. I have an Amdek RMK-100 (sold as kit), very similar!"
Never heard of it, so I Googled "Amdek RMK-100" to see just how similar it was to both the DR-55 and the SR-88. Turns out (according to the Internet) that Amdek products were made by Boss/Roland back in 80s, and, not only that, but that the RMK-100 is actually the kit version of the Boss DR-55. Makes sense on why it would also be similar to the SR-88.
I found an ebay auction for an Amdek RMK-100 going on right now with a great photo of the front panel (see below), and indeed it does share a lot with the DR-55 and SR-88 - but definitely not identical to either one.
For example, it looks like the Amdek and SR-88 share a similar filler function that as far as I can tell is not available on the DR-55. And the DR-55 and the RMK-100 share a similar accent function that I don t see on the SR-88.
Now where does the Electro Dynamics Corporation Programmable Rhythm SR-99 fit in?
I also came across another machine with similar features - the Programmable Rhythm SR-99. No - not manufactured by Sound Master, but by Electro Dynamics Corporation. And, it too resembles the others in functionality, and especially the SR-88 in design also.
I ve included a row of photos below to help make the comparison between the two. The SR-88 photo is from the 2005 MATRIXSYNTH auction post and the EDC SR-99 photo is from the excellent BigBlueWave.co.uk site. I ve also thrown in a photo from another recent E-bay listing that included both - plus boxes and manuals! Sick!
Obviously, Sound Master and EDC are somehow connected, although I can t find any info on the Internet concerning these two companies. I do know that they were both advertising separately in Keyboard Magazine in late 1983, making it unlikely that one of the companies changed their name to the other. Anyone know anything?
And then there is the Clef Master Rhythm...
Now, I m going to throw in a late entry. It s Sunday night, and I just came across this August 2010 MATRIXSYNTH auction post for the Clef Master Rhythm. It not only shares part of the name of one of the other units ("Master"), it too has many features of the other rhythm machines, and identical innards as the DR-55, but is expanded to include even more sounds:
"This is essentially a fully expanded Boss DR-55 feature-wise and tone-wise. The circuits are identical (schematically and tonally) to the Boss DR-55, but the Clef Master Rhythm gives you way more instruments than the Boss DR-55..."
Interestingly, according to the post, it pre-dates the Boss DR-55 - and also came in a kit form like the Amdek.
"The Clef Master Rhythm came out a little before the Boss DR-55 in late 1979/early 1980. It was sold in two versions and available in greater quantities in Europe than in the United States. One version was a kit that the user put together and another one was a prebuilt machine."
A photo from the MATRIXSYNTH post really helps show the similarities in functions with the others:
What does it all mean?
So, looking at all five machines, its almost like there was a rhythm machine salad bar of some sort in Japan, and each company stepped up to it and picked out which features they wanted to include in their product.
And that begs the question - since we know there was a kit form available and there are claims that the Clef Master even has the same circuits as the DR-55, could all five products (and probably others) have used the exact same internal parts - each company choosing which features to include and then customizing in their respective rhythm machine? And if so, were those parts supplied by Amdek, or did all five get their internal parts from some other manufacturer?
And if that is the case, then the question of whether the SR-88 or DR-55 came first doesn t really matter much, since it is likely that the kit components would have been available first. Plus, we have that one auction post with the claim that the Clef Master came out before the DR-55 - making it all even more confusing to figure out.
Or, am I totally off the mark on all this? Were they all created separately? Maybe I ve just been fixated on this a little too much...
I ll keep on looking for more info on these companies and any connection they might have, but if anyone want to buy all four and open them up to take a look - it would be muchly appreciated. :D
Posted by RetroSynthAds at 12:05 PM
Labels: 1982, amdek, clef master, dr-55, drum machine, electro dynamics corporation, keyboard magazine, rmk-100, Sound Master, sr-88, sr-99
Here s a funny thing - I seem to remember Clef in the early 1980s as a British company that made electronic pianos (touch-sensitive ones!) in kit form. Deep in the back of my mind I recall seeing them at a music fair in London with a couple of their pianos and some drum machines including a prototype drum/bass/chord sequencer called something like a "Band-Box". But it WAS a long time ago.
February 12, 2012 at 12:36 PM
Looks like (for once) my memory didn t fail me. Here is a 1982 ad for Clef Electronics showing all the products I mentioned, plus a natty-looking little monosynth! BTW, I owned an EDC SR99 drum machine in the mid-1980s, but replaced it with a Yamaha RX-21 a couple of years later.
February 12, 2012 at 12:46 PM
1322 Hard Soft Synth 3 There are some HSS3s for sale in my shop.scripts:- HSS3S01V...
Hard Soft Synth 3 There are some HSS3s for sale in my shop.
- HSS3S01V38 (HSS3a, HSS3b, HSS3c)
- HSS3S02V20 (only audio and optimized for the HSS3f)
- HSS3S02V21 (HSS3g)
- HSS3S02V33 (works with HSS3j, HSS3i, HSS3g, and probably also HSS3e)
- HSS3S03V23 (works with HSS3j, HSS3i, HSS3g, and probably also HSS3e)
- HSS3S03V29 (works with HSS3j, HSS3i, HSS3g, and probably also HSS3e)
- Modding a HSS3?
- assembling instructions
- the parts
gijs gieskes, instruments, circuitbending, music, visula equipment, 1-bit, 4-bit, 8-bit, 16-bit, gameboymusic, lsdj, nanoloop, sequencer, drumcomputer, tr-707, casio, roland, nintendo, sega
1167 How to Solder an SMD LED | eHow.com
How to Solder an SMD LED. The small size of the SMD (Surface Mount Device) component and the confined workspace of the PCB (Printed Circuit Board) are the challenging parts of SMD soldering. The best approach is to obtain the proper equipment and to plan out the process, before you actually begin. Working with an LED (Light Emitting Diode) is no...
1084 Erthenvar Products
Erthenvar: Patch Chord
PulpLogic: Exit Strategy
PulpLogic: Entry Point
freelunch: -12 to +5V Eurorack Regulator
Ribbon Cable (16 to 16)
Eurorack DIY Parts:
PJ-301B Vertical Mount Jack with Hex Nut
Vector T-Strut Rail: Cut To Length
Square Rail Nut
1058 x0x:rareparts [AdaWiki]
1057 x0xb0x Build Manual - Parts list
1055 View topic - *** All x0xb0x 'Rare' Parts with 2SA733(AP)'s $55 *** â€˘ adafruit industries â€˘ Customer Support Forums, DIY Electronics, Open Source Hardware, Arduino
1004 MIDISTATION - ANALOG, VINTAGE OUTBOARD, SAMPLER
986 Arduino Blog Â» Blog Archive Â» CHEAP, FAT and OPEN
Jacob Remin, at CIID will present on August 27th, his Arduino-compatible sound synth. There are many projects out there aiming musicians that use Arduinoâ€™s IDE as a programming platform, but Jacobâ€™s wins them all when it comes to the PCBâ€™s shape. Take a look at the picture here and explore his thesisâ€™ blog for more information and videos where he shows the system at its full power.
(c) 2009 Cheap, Fat, and Open by J. Remin
As for today he hasnâ€™t published the videos using the final PCB, yet. However you can get a sneak preview to how it will be to play with it at the prototype he hand-wired using bits and pieces from a Stylophone, an LCD, some buttons, and other parts.
967 Anarchestra: www.anarchestra.net
Anarchestra is a group of exerimental musical instruments and the people who play them. The instruments, built by Alex Ferris, are predominantly steel with a few adapted parts, such as tuning machines and mouthpieces. The instruments were built to encourage non-musicians to explore the making of sound, to allow experienced musicians to make sound unconstricted by their technical habits and preconceptions, and to provide an alternative vocabulary of musical sounds.
Musical Instrument Construction,Musical Instrument Design,Experimental Musical Instruments,Experimental Music,New Music,New Musical Instruments,Avant-Garde Music,Improvisation,Collective Improvisation,Free Jazz,Anarchist Music,Anarchist composition,Anarchist Aesthetics,Aesthetics of music,Music theory,Alternative Music,Alternative Tuning,Steel Musical Instruments,Welded Musical Instruments,Punk,Noise,Noyz,21st century music,post-modern music
910 Electronics Plus - Hard to find parts and accessories, available and ready to ship!
900 VINTAGE PLANET - Synthesizer Service & Parts
Specialized in synthesizer accessories, rare parts, books, manuals, sounds, software, etc. for vintage analog electronic musical instruments. Expertise in special projects, applications, restoration and modification. Information and consultancy. Amsterdam
Vintageplanet, Vintage Planet, Synthesizer, Parts, Manuals, Sequential, Sequential Circuits, SCI, Prophet, Schematics, Service, Spares, SSM, CEM, Curtiss, Curtis, IC, Roland, Yamaha, Simmons, SDS, EMS, Moog, Korg, Commodore, MSX, Atari, Korg, Oberheim, Books, Obsolete, Components, Interface, MIDI, Sample, Akai, Anatek, Casio, Ensoniq, Jen, Kawai, Linne, MPC, Pro One, Claptrap, Analog, Analogue, Synth, Music, Musical, Instruments, Electronic,
I have started to build a (slightly) updated version of the Korg PS-3200 synthesizer.
The PS-3200 was the last of three fully polyphonic, semi-modular analogue synthesizers offered by Korg in the late 70's. (See Ben Ward's excellent Korg PS site for detailed information, including user manuals.)
The concept of the PS-Synthesizers was different from other manufacturer's early polyphonic instruments. Instead of using a small number of voices and a clever keyboard assigning circuit, the "PolyKorgs" had a complete synthesizer circuit, hard wired to each key. That makes a total of 48 VCFs, 48 VCAs and 48 voltage controlled ADSRs even for the smallest of the range, the PS-3100. The largest of the range, PS-3300, even had 144 of these circuits.
The sheer number of synthesizer circuits called for an extremly economic circuit design, and it's a joy to look at Korg's design ideas which led to building blocks that almost did the same as in the better known "classic" synthesizers. And after many years of engineering and reverse-engineering electronic music circuits, I have learned to look at odd solutions not as "substandard", but as a source of creativity an individual character. Here's a list of some highlights:
Function Implementation Side effects
Single-Transistor Waveform Converter creates triangle, saw, pulse and PWM from saw input, using one (!) transistor, one diode and two resistors per voice, plus two global control voltages Pulse height also changes with pulse width
5-Transistor-VCF (Korg-35) A Voltage controlled 2-pole (Sallen&Key) LPF built from 5 transistors rather high CV feedthru
Single-Diode VC Resonance The dynamic resistance of a simple diode is used to alter the feedback gain of the VCF limited range of Q
"Expand" function instead of VCF Envelope modulation depth Instead of scaling down the ADSR with a VCA, the a variable portion of the Envelope is just clipped with a single diode. It's so remarkably close to ordinary VCA function that apparently nobody takes notice. At least I have not read about it anywhere.
At slow Atack times, the Envelope appears delayed at the VCF (no effect until th eclipping point is reached). Usefull for Brass sounds, and not easy to emulate with conventional synthesizers.
Minimum parts count Voltage Controlled ADSR Three transistors, 1/2 of a LM324 and one CD4007 per voice. Plus some more involved control circuit, shared by several voices Transistors must be selected in 13-tuples, not just in pairs.
ADSR detail (1):
One-opamp control logic 1/4 LM324 is used as Flipflop, which is dynamically set by Gate-ON, dynamically reset by Gate-OFF, statically reset when the attack peak voltage is reached, and whose set/reset sensitivity is altered by a CV Very odd "Hold" function, depending on the "Attack"-value. But very useful in practise.
ADSR detail (2):
Single-Transistor, exponential slope VC-Decay Using a single transistor per voice for VC Attack and Release is remarkable already, even though the A and R slopes are linerar. But the Decay slope is exponential, and this is achieved with a single transistor and two resistors per voice! The Decay time range is rather limited. No ultra fast Decay, and no ultra slow Decay either.
Single-Transistor VCA That's the "Korg standard" VCA, well known from other instruments like the MS-10.
845 SnipSnip.It - Share the Good Parts
Crop & Share Your Favorite Youtube Content.
crop youtube videos, slice youtube videos, cut online videos
725 Alesis A6 Andromeda Spare Parts
Alesis A6 Andromeda Spare Parts synth
720 Common Security Mistakes in Web Applications - Smashing Magazine
Web application developers today need to be skilled in a multitude of disciplines. Itâ€™s necessary to build an application that is user friendly, highly performant, accessible and secure, all while executing partially in an untrusted environment that you, the developer, have no control over. I speak, of course, about the User Agent. Most commonly seen in the form of a web browser, but in reality, one never really knows whatâ€™s on the other end of the HTTP connection.
There are many things to worry about when it comes to security on the Web. Is your site protected against denial of service attacks? Is your user data safe? Can your users be tricked into doing things they would not normally do? Is it possible for an attacker to pollute your database with fake data? Is it possible for an attacker to gain unauthorized access to restricted parts of your site? Unfortunately, unless weâ€™re careful with the code we write, the answer to these questions can often be one weâ€™d rather not hear.
Weâ€™ll skip over denial of service attacks in this article, but take a close look at the other issues. To be more conformant with standard terminology, weâ€™ll talk about Cross-Site Scripting (XSS), Cross-Site Request Forgery (CSRF), Phishing, Shell injection and SQL injection. Weâ€™ll also assume PHP as the language of development, but the problems apply regardless of language, and solutions will be similar in other languages.
652 50 Great Web Alternatives to Desktop Software
Even without the help of the ground breaking features in HTML5, web apps have come of age. While not all web apps rival their desktop counterparts, some clearly
643 Akai MPC 1000 Spare Parts from MPCstuff.com
626 Korg Electronic parts
534 Synth Secrets: Links to All Parts
This page contains links to every part of Gordon Reid's hugely popular SYNTH SECRETS series which ran for over five years in Sound On Sound magazine (May 1999 to July 2004).
Synthesizers, Synthesisers, synthesis, sound synthesis, analogue synthesis, FM synthesis, digital synthesis, yamaha synth, Roland synth, ARP syths, Prophet synthesizers, Moog synths, sound manipulation, Gordon Reid,
520 Lintronics Advanced Memorymoog Modification
Upgrades, repairs and special parts for Memorymoog and Minimoog synthesizer from Lintronics, Germany.
Moog, Memorymoog, LAMM, Minimoog, MIDI interface, upgrades, Lintronics, Rudi Linhard, Moogmusic, Big Briar, Bob Moog, synthesizer, Musikinstrumente
505 Alesis A6 Andromeda Spare Parts
426 steampunk brass synthesizer blows my mind on [technabob]
I always thought analog synthesizers were inherently retro. Just not quite this retro. This unbelievable steampunk modular synthesizer features tons of dials and intricate brass etching throughout. All of the buttons and knobs were hand lathed, and the synth includes a number of antique parts as well.
audio, geek art + craft, retro, strange + wonderful, technology, analog, brass, handmade, music, sound, steampunk, synthesizer
407 Knobs :: Electromechanical :: Electronic Parts :: Banzai Music
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Markenzeichen und Warenzeichen sind Eigentum der jeweiligen Markeninhaber. Aus einem Fehlen einer derartigen Kennzeichnung ist nicht der SchluĂź zu ziehen, daĂź es sich hierbei um einen freien Namen im Sinne des Marken- und Warenzeichenrechts handelt.
405 AudioLemon: HOWTO: Build A Steampunk Oscilloscope
AudioLemon is a blog that looks at all things audio related. Synths, samplers, software, effects and a little bit of electronic music and culture.
A steampunk oscilloscope built by Andrew Smith from parts found in a junk box. "Although not intended to be fully functional it does actually work." It's looks so cute... if you have the DIY skills you can read an article over on electronicsweekly detailing the build, components used and a schematic.
"I discovered that I had a really cute little 7cm CRT in the loft, together with several other valves of different types, and it seemed a good idea to make something decorative with them. For me, a lot of the charm of this piece resides in the unconventional layout and design, using a polished wooden box instead of the more usual metal chassis."
381 Andromeda spare parts - Gearslutz.com
You can find them here: Alesis A6 Andromeda Spare Parts If anyone knows another site, please share. I am trying to locate the modulation wheel and its
Andromeda,spare,parts, Andromeda spare parts, recording, studio, microphone, mic pre, compressor, equalizer, pro tools, DAW, Nuendo, Cubase, SSL, Neve, Helios, review, reviews
309 PC Mount Vertical :: Alpha 16mm :: Potentiometers :: Passive Components :: Electronic Parts :: Banzai Music
99 Arrangements in Skin, Parts 1 + 2; Repulsion Decoration Series (TRAMAINE de SENNA)
art, architecture, illustration, costume design, clothing, film, painting, courtroom illustration, sculpture, drawing, models, exhibits, shows, meat, red curtains, puppets, Tramaine de Senna, The Butcher Boutique, donuts, Eine Kleine Fleischmusik, Welcome to my Cardboard Home, Das Rote Experiment, The Red Experiment, La Belladonna e La Gola Profunda, I Love Caulk Frosting Paintings, Decorous Mundanity, Disgust and Desire, Repulsion Decoration, cardboard architecture, banality, Speed Bump Mannequins, Double Dub, Tremenda Cena Boing Boing
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