MATRIXSYNTH: Search results for SSM Curtis


Showing posts sorted by relevance for query SSM Curtis. Sort by date Show all posts
Showing posts sorted by relevance for query SSM Curtis. Sort by date Show all posts

Monday, March 20, 2017

Latest News from Behringer & A Response From The Curtis Family


The next chapter in Behringer synth development is in. We already know Uli Behringer announced plans to re-create classic synths. Behringer will be making new innovative synths as well, and we now have some numbers:

“We have 4 synthesizer development teams simultaneously working on 20 synths, drum machines etc..

We’ll be creating both innovative new synths as well as reviving classics.

We’re all in and the teams are on fire.'"

On reproducing vintage chips for the classics:

"We just received the first batch of our 3340 VCO chip.

It is a 100% exact replica of the Curtis CEM3340 which even includes the 40 year old, 8 micron manufacturing process. It was a difficult and expensive undertaking but we are very pleased with the result as this VCO is considered one of the best sounding oscillators.

We are continuing to invest in reviving other legacy Curtis and SSM semiconductors which will allow us to bring back classic synths - all in the most authentic way. We have also reissued the 3320 filter chip which should be arriving in a few months.

Uli"

It's worth noting the Curtis CEM 3340 has already been re-introduced by OnChip Systems, formerly Curtis Electromusic, and is currently available for makers. Behringer's 3340 appears to bypass Curtis Electromusic and is being manufactured by Behringer (via Coolaudio) directly. SSM chips and the CEM 3320, however, are not yet available. Although the chips will obviously be re-issued for use in Behringer synths, it does appear that some if not all may become available to the Synth DIY community as well. More info on that further below, but first a response on the re-creation of Curtis chips from the Curtis family:

"Many of you who are active on synth forums have recently contacted us regarding another company's claim of producing VCO chips that are the equivalent to the CEM3340 that was used in many legendary synthesizers.

To avoid any confusion, please know that there is only one manufacturer of the authentic CEM3340 designed by my late husband, Doug Curtis. Any claims, use of this product designation, and use of the name Curtis Electromusic by other companies are made without permission from OnChip Systems (our current company name) or the Curtis Family.

As much as Doug would be humbled and so very happy about the legacy his products enjoy, we can assure you that as a person of the highest integrity he would be deeply saddened by the attempt of others to trade on his name and to make unsubstantiated claims of equivalency to his original inventions.

In his loving memory and gratitude for the community of musicians and synthesizer enthusiasts, Doug's family is committed to making his authentic designs available as demand presents itself. Thank you for your continued support of Doug's analog synthesizer legacy.

Mary Curtis and our daughters, Ashley and Julia"

It's worth noting that many Dave Smith Instruments synths use Curtis chips and do so with permission from the Curtis family. Dave Smith was friends with Doug Curtis and has been buying parts from OnChip for over 15 years. OnChip was Doug Curtis' company and is now his wife Mary Curtis's company. These chips were used in the Evolver line, the Prophet '08, MoPho line, and the Prophet 12. The Pro 2, Prophet-6, and OB-6 use discrete designs.

The following is from another thread from Uli in German, translated into Googlish:

"Something clearer. Patent rights are generally 20 years, whereby the technology is freely available for everyone. This allows the inventor, on the one hand, to harvest the fruits of his invention, but also to ensure that no monopoly arises and, after the expiry of the protection, everyone has free access to the technology - without a bad conscience.

In the case of the Curtis or SSM chips, the patent rights of these 40-year-old components have run out for a long time and everyone can reproduce them today. Why this no longer companies do is simply because the mask costs are very high (6-digit USD range per chip) and on the other hand the minimum edition is about 300,000 - 500,000 pieces.

Curtis has registered the name rights for Curtis and CEM, but on the number 3340 etc. there is no protection. Therefore, there are other vendors who have revived these old chips:

Http://ericasynths.lv/en/shop/diy/diy-a ... er-as3320 /

Or look at how many manufacturers. The 074 Opamp.

Why are these 40 year old chips being rebuilt? Anyone who once belonged to an old Oberheim OB-Xa or a Prophet 5 will agree with me that the sounds of these Curtis and SSM chips are absolutely unsurpassed in their sound qualities. This specific sound is not easy to replicate with discrete technology and since we have an immense passion for analog synthesizers and believe that customers will appreciate these components, we are taking the financial risk of reviving these chips. Coolaudio has just produced the 3340 VCO successfully and the 3320 filter chip is now also under development - further building blocks will follow.

For more than ten years, the company http://www.coolaudio.com, which is affiliated with us, has specialized in restoring expired components. On the one hand the company produces the coveted BBD chips from the Panasonic times, but also VCA's, OTA's, Optocoupler, etc.

Our intention is to focus on the old Curtis and SSM chips, as we want to use them in our future synthesizers. At the same time, Coolaudio will also offer them for sale, which allows other competitors to build analog instruments as well as help people repair old synths. Many of the Coolaudio chips are already used today by our competitors and we are happy if we can make a contribution to the fact that these analogue components are made of music.

I personally consider VA for eyewash because this is ultimately digital technology. No digital synthesizer will ever be able to reproduce the 'unpredictability' and 'inaccuracy' of an analog synthesizer - no matter how much marketing is operated. Anyone who listens to analogue and digital synthesizers in comparison can easily find out. That is exactly why we will be specializing in analogue synths.

Perhaps our desire for analogue technology is simply that we humans are knitted by themselves analogously and the emotions associated with it determine our existence.

Greeting

Uli"

This one spotted and sent in via Soviet Space Child.

Update: And another update just in via Soviet Space Child:

Originally Posted by Uli Behringer:

"Allow me to share a thought.

Dave Smith Instruments (DSI) is using our SSM clones (V2164).
homemade polysynth — A quick tour of the Prophet 6 voice card

Elektron are using Coolaudio parts as well.
https://www.flickr.com/photos/psychl...7632621387322/

Many other leading manufacturers are using Coolaudio chips and by using these parts obviously have no concerns with cloning in general and with using our chips in their products.

If our competitors are not concerned then why should customers be?

Uli'"

The difference of course is currently available vs. not currently available.  The CEM3340 is currently available from Curtis Electromusic, and the Minimoog Model D is currently available from Moog Music.   You be the judge for yourself.

Thursday, March 10, 2011

CEM3360 CURTIS ANALOG Filter and CEM3340 VCO Chips


via this auction

You can see what synths these were used on Synthesis Technology/MOTM's CEM & SSM page.

Update via Qwave in the comments: "MIssing Curtis/SSM chips in Waldorf synths on the Synthesis Technology/MOTM's CEM & SSM page:

MW I (Rev A):
8x Curtis CEM 3389 Filter
4x Curtis CEM 5508H Octal Sample & Hold

MW I (Rev B):
8x Curtis CEM 3387 Filter
4x Curtis CEM 5508H Octal Sample & Hold

waveSlave:
8x Curtis CEM 3389 Filter
4x Curtis CEM 5508H Octal Sample & Hold

WAVE:
16x Curtis CEM 3389 Filter
16x Curtis CEM 5508H Octal Sample & Hold
16 x SSM 2024 Quad current controlled Class A amplifier with S/N > 82dB

4-Pole (12V version):
1x Curtis CEM 3387 Filter"

Thursday, April 20, 2017

SSM Chip Production to Return as SSI Chips under Sound Semiconductor


We have some huge news in. Most of you might be experiencing a slight state of adrenalin induced shock right about now; I admit, much like myself when I read the press release that follows further below. If you have been following synths over the years, and are familiar with CEM vs. SSM chips like me, you know how big this is. For those of you not familiar with SSM, to say they made chips responsible for the sonic character of some of the most revered classic vintage synths out there, would be an understatement. SSM and CEM were the two top manufacturers for chips used in many of the classic vintage synthesizers you have come to love. CEM stood for Curtis Electromusic Specialties and is now Curtis Electromusic, run by the family of the late Doug Curtis. SSM stood for Solid State Music under Solid State Micro Technology for Music founded by Dan Parks. Dan Parks is back, under the helm of Sound Semiconductor, and they will be reproducing new chips. For a full list of what chips were used in various vintage synths, see this Wikipedia article, but I'll just mention a few that used SSM: the Sequential Circuits Prophet-5 Rev 1 & 2 (which some say sound warmer than the CEM based Rev 3s), the Fairlight CMI II and IIx, the PPG Wave 2.2 and 2.3, the Octave Voyetra 8 and Cat SRM, the KORG Mono/Poly and Polysix, E-Mu's Drumulator, SP-12, SP-1200, Emulator 1 & II, and Emax, the Buchla 296 Programmable Spectral Processor, the Aeries System 300 modular, and more.

The following is the official press release from Sound Semiconductor:
[note the Dave Rossum mentioned below is, of course, Dave Rossum formally of e-Mu, and now of Rossum Electro-Music]



"NEW SEMICONDUCTOR VENTURE FOCUSES ON ELECTRONIC MUSIC AND AUDIO

First Product is Voltage Controlled Filter for Analog Synthesizers

April 20, 2017 - Sound Semiconductor today announced its formation and first product for analog synthesizers.

Headed by Dan Parks, CEO of 80's chipmaker SSM and former Audio Products Director at Analog Devices and National Semiconductor, Sound Semiconductor will focus on high performance IC's for electronic musical instruments and professional audio equipment. The development team includes previous SSM IC designers; all passionate about music and audio.

Sound's first product is the SSI2144 Four Pole Voltage Controlled Filter, an improved re-issue of the SSM2044 that many believe to be the best sounding synthesizer filter chip ever produced. Developed by original SSM2044 designer Dave Rossum - known for his many electronic music contributions - the SSI2144 utilizes modern process technology for high reliability and low cost. Improvements include lower noise and control feedthrough, better performance of the resonance control circuit, and pin connections optimized for PCB layout. Preservation of the SSM2044's coveted sonic characteristics - a key project requirement - were achieved.

The SSI2144 is now available in sample quantities to interested OEM's, with production quantities in stock by late Spring. The device is offered in a 16-lead Shrink Small Outline Package (SSOP).

Pricing of the SSI2144 is $1.60 at 1000-pieces. Sound Semiconductor intends serve the hobby and enthusiast community through resellers for small volume sales and evaluation boards.

'It's exciting to see the renaissance of analog synthesis,' stated Dan Parks, President of Sound Semiconductor. 'When the idea hit to develop new ICs for this market, it was gratifying to have so much interest from my former colleagues to get involved in this effort.'

A second product is in layout design, with first samples expected by Summer. More information on that product will be forthcoming at a later time.

Sound Semiconductor is composed of musicians and technologists with the goal of developing affordable, high-performance integrated circuits for the electronic music and professional audio markets. For more information, please visit www.soundsemiconductor.com."

Sunday, April 16, 2017

Roland SH-1


Published on Apr 16, 2017 SSM Curtis

"Roland SH-1, 1978, 1 VCO, Sub OSC, four OTA-stages with CA3080"

Update:

Thursday, August 23, 2012

PPG EVU Expansion Voice Unit 80's wavetable synth by Wolfgang Palm

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

"This is the "brains" of a PPG Wave 2.3: Classic vintage 8 voice wavetable synth; digital oscillators for complex waveforms; warmed up with rich analog filters [8x Curtis SSM 2044 VCF chips], designed by Wolfgang Palm, used by famously by David Bowie, The Fixx, Trevor Horn, Jean Michel Jarre, Art of Noise, Rush, Depeche Mode, Gary Numan, Robert Palmer, Psychadelic Furs, Talk Talk, The Cars, Ultravox, Steve Winwood, Rush, Stevie Nicks, Thomas Dolby, Pet Shop Boys, Mike and the Mechanics, and Stevie Wonder.

However the buyer should know:

This unit predates MIDI [was built between 1982-1984] and will require a technician to complete the build we started for the MIDI to EVU converter, as planned here: http://www.hermannseib.com/english/synths/ppg/midiretro.htm

All of the parts, veroboard circuit, and new OS ROMs are included."

more pics here

SN 01012 or 07072?


Update via Rich in the comments: "Just a short note of clarification:
The above mentioned Curtis SSM2044 was a combination of 2 different companies:

Curtis Electromusic Specialties, founded by Doug Curtis - made the CEM3340 VCO, (Roland Jupiter 6 and others if I recall correctly), CEM3320 VCF, CEM3310 ADSR and quite a few others.

Their biggest competitor was Solid State Microtechnologies by solid state music who made the infamous SSM2040 4 cell chip that was used for 4 pole Low Pass Filters, 2 pole State Variable Filters and a few other configurations. (Prophet 5 versions 1 and 2. Version 3's used the thinner sounding Curtis CEM3320.)
The Korg Mono/Poly and Polysix (amoung many other units) used the SSM2044 4 pole Low Pass Filter."

Wednesday, March 14, 2018

New CEM and SSM Chip Clones

A few new CEM and SSM chips for the DIYers out there.

First we have Latvian CEM Synth IC clones from ALFA:

AS3310 Voltage Controlled Envelope Generator. CEM3310 pin-to-pin compatible
AS3320 Voltage controlled filter. Improved CEM3320 pin-to-pin compatible
AS3330 Dual Voltage Controled Amplifier (VCA). Improved CEM3330 replacement.
AS3340, AS3345 Voltage Controlled Oscillator (VCO). CEM3340, CEM3345 pin-to-pin compatible
AS3360 Dual Voltage Controled Amplifier (VCA). CEM3360 pin-to-pin compatible
AS16M1 Serial Controlled, 16-Channel SPCO Switch

Next, Coolaudio [Behringer] announced they are working on new SSM chip clones (news via Soviet Space Child):

"Now that we have successfully cloned the famous Curtis 3340 and 3320 synth chips, we are now looking into reviving the great sounding SSM2044 and SSM2033 chips."

Sound Semiconductor recently announced the SSI2164 QUAD VCA.

And last, but definitely not least, considering, Curtis Electro Music announced the CEM3340 VCO re-issue in 2016.

For a list of CEM and SSM chips in synthesizers see Wikipedia here.

For previous posts including some with demos, see the corresponding labels below.

This post, like all posts, is an FYI that this all exists. It's up to makers and DIYers to decide where they get their chips. This post is worth reading.

Friday, August 20, 2021

Emu SSM Modular 1 of 1

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


via this auction

"For sale is one incredibly rare (1 of 1) E-MU SSM modular based around the SSM voice demo board issued by E-MU. This was built by Gene Stopp (technician for ELP!!). As well as having all the features of the SSM voice demo board a 3rd CEM (curtis) based oscillator was added, along with a slew of other functions! Also included is a binder detailing each and every part of the build (schematics for added functions, schematics from E-MU etc). Undoubtedly the only one like this! The synth itself is has been tuned up and is 100% working.

This sale includes the E-MU mini-modular, binder with ALL documentation, and of course a power cord!"

Monday, February 05, 2018

PPG Wave 2.2 SSM Filter


Published on Feb 5, 2018 SSM Curtis

Thursday, February 08, 2018

Sequential Circuits Pro One Sequencer


Published on Feb 8, 2018 SSM Curtis

Sunday, February 15, 2015

Korg Poly61


Published on Feb 15, 2015 SSM Curtis

"I was surprised ..."

Sunday, December 04, 2022

Crumar Spirit


video upload by SSM Curtis

"for some people possibly to much noise"

You can find addtional Crumar Spirit posts here.

Tuesday, April 18, 2017

Roland SH-5


Published on Apr 18, 2017 SSM Curtis

"Roland SH-5, 1976, 2 VCOs, Lowpass-Filter: diode ladder filter achieved with five stages, made by Transistors, Highpass-Filter: single stage Highpass with CA3060"

Wednesday, October 08, 2014

Ensoniq Mirage - Demo & New Software


Published on Oct 8, 2014 SSM Curtis

"Sampler using analog filters like EMU Emulator I, II, III, Emax, Prophet 2000, 2002, 3000, Studio 440, DSS 1

Here you can download first wholly brand new software to be written for the Ensoniq Mirage, for something like 20 years: https://github.com/gordonjcp/miragetools"

Tuesday, November 04, 2014

Akai AX73


Published on Nov 4, 2014 SSM Curtis

00:30 Realtime filter editing
00:48 A lot of resonance
01:39 Sequenced (MIDI)
02:16 Finish

Effect: Reverb

Saturday, September 27, 2014

Korg DW 6000 & Kiwi Patch Editor


Published on Sep 27, 2014 SSM Curtis

"Beschreibung"

Friday, December 12, 2014

Yamaha CS 50


Published on Dec 12, 2014 SSM Curtis

Monday, October 20, 2014

Akai VX 600


Published on Oct 20, 2014 SSM Curtis

"01:26 backlight constant buzz
01:54 Complete initialisation (erase all your sounds and patches)
02:01 Patch editing (timelapsed)"

Thursday, December 31, 2020

Re-Start 2021 - more fun in twenty-one


SSM Curtis

Tuesday, February 06, 2018

Kawai SX240 Midi CC Sysex Update


Published on Feb 6, 2018 SSM Curtis

Saturday, February 20, 2016

Matrix1000 OS Upgrade 1.16


Published on Feb 20, 2016 SSM Curtis

"Control Matrix1000 after OS Upgrade 1.16 using Kiwi Patch Editor"
NEXT PAGE HOME


Patch n Tweak
Switched On Make Synthesizer Evolution Vintage Synthesizers Creating Sound Fundlementals of Synthesizer Programming Kraftwerk

© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
MATRIXSYNTH is supported by affiliate links that use cookies to track clickthroughs and sales. See the privacy policy for details.
MATRIXSYNTH - EVERYTHING SYNTH