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== Synthesizers using CEM ICs ==
== Synthesizers using CEM ICs ==
=== Prebuilt ===
=== Prebuilt ===
* [[Akai AX-60]] – 6 x CEM3394
* Akai AX-60 – 6 x CEM3394
* [[Akai AX-80]] – 6 x CEM3372
* Akai AX-80 – 6 x CEM3372
* [[Akai VX600]] - 12 x CEM3374B, 12 x CEM3378
* Akai VX600 - 12 x CEM3374B, 12 x CEM3378
* [[Behringer Crave]] - 1 x CEM3340
* Behringer Crave - 1 x CEM3340
* [[Behringer Neutron]] - 2 x CEM3340
* Behringer Neutron - 2 x CEM3340
* [[Buchla 296e]] – 1 x CEM3360
* Buchla 296e – 1 x CEM3360
* [[Cheetah MS6]] – 6 x CEM3396
* Cheetah MS6 – 6 x CEM3396
* [[Crumar Bit 99]] – 6 x CEM3328
* Crumar Bit 99 – 6 x CEM3328
* [[Crumar Bit One]] – 6 x CEM3328 in late models
* Crumar Bit One – 6 x CEM3328 in late models
* [[Crumar Composer]] – 2 x CEM3310, 2 x CEM3320, 2 x CEM3330
* Crumar Composer – 2 x CEM3310, 2 x CEM3320, 2 x CEM3330
* [[Crumar Spirit]] – 2 x CEM3340, 2 x CEM3350, 3 x CEM3360
* Crumar Spirit – 2 x CEM3340, 2 x CEM3350, 3 x CEM3360
* [[Crumar Stratus]] – 6 x CEM3310, 6 x CEM3320, 6 x CEM3330
* Crumar Stratus – 6 x CEM3310, 6 x CEM3320, 6 x CEM3330
* [[Crumar Trilogy]] – 6 x CEM3310, 6 x CEM3320, 6 x CEM3330
* Crumar Trilogy – 6 x CEM3310, 6 x CEM3320, 6 x CEM3330
* [[Doepfer A-106-6 XP Filter]] - CEM3379
* Doepfer A-106-6 XP Filter - CEM3379
* [[Doepfer A-107 Multitype Morphing Filter]] - CEM3379
* Doepfer A-107 Multitype Morphing Filter - CEM3379
* [[Doepfer A-109 Voltage Controlled Signal Processor]] - CEM3379
* Doepfer A-109 Voltage Controlled Signal Processor - CEM3379
* [[Doepfer A-111-1 High-End VCO]] - CEM3340
* Doepfer A-111-1 High-End VCO - CEM3340
* [[Doepfer A-111-2 High End VCO II/VCLFO]] - CEM3340
* Doepfer A-111-2 High End VCO II/VCLFO - CEM3340
* [[Doepfer A-111-3 Micro Precision VCO]] - CEM3340
* Doepfer A-111-3 Micro Precision VCO - CEM3340
* [[Doepfer A-111-4 Quad Precision VCO]] - CEM3340
* Doepfer A-111-4 Quad Precision VCO - CEM3340
* [[Doepfer A-111-5 Synthesizer Voice]] - CEM3394
* Doepfer A-111-5 Synthesizer Voice - CEM3394
* [[Doepfer A-121 Multimode Filter]] - CEM3320
* Doepfer A-121 Multimode Filter - CEM3320
* [[Doepfer A-122 24dB Curtis Low Pass Filter]] - CEM3320, CEM3379 in later versions
* Doepfer A-122 24dB Curtis Low Pass Filter - CEM3320, CEM3379 in later versions
* [[Doepfer A-123 24dB High Pass]] - CEM3320
* Doepfer A-123 24dB High Pass - CEM3320
* [[Doepfer A-124 Wasp Filter]] - CEM3379
* Doepfer A-124 Wasp Filter - CEM3379
* [[Doepfer A-126 Voltage Controlled Frequency Shifter]] - CEM3382
* Doepfer A-126 Voltage Controlled Frequency Shifter - CEM3382
* [[Doepfer A-130 Voltage Controlled Amplifier]] - CEM3381 in earlier models, alternately CEM3382
* Doepfer A-130 Voltage Controlled Amplifier - CEM3381 in earlier models, alternately CEM3382
* [[Doepfer A-131 Voltage Controlled Amplifier]] - CEM3381 in earlier models, alternately CEM3382
* Doepfer A-131 Voltage Controlled Amplifier - CEM3381 in earlier models, alternately CEM3382
* [[Doepfer A-132-3 Dual linear/exponential VCA]] - CEM3360 (early versions)
* Doepfer A-132-3 Dual linear/exponential VCA - CEM3360 (early versions)
* [[Doepfer A-134-1 Voltage Controlled Panner/Crossfader]] - CEM3381
* Doepfer A-134-1 Voltage Controlled Panner/Crossfader - CEM3381
* [[Doepfer A-179 Light Controlled Voltage Source]] - CEM3320
* Doepfer A-179 Light Controlled Voltage Source - CEM3320
* [[Doepfer Dark Energy]] - CEM3394 (original model)
* Doepfer Dark Energy - CEM3394 (original model)
* Dynacord Add-one - 8 x CEM3389
* [[EH-30 Modular]] – 2 x CEM3310, 4 x CEM3330, 4 x CEM3340
* [[EH-30 Modular]] – 2 x CEM3310, 4 x CEM3330, 4 x CEM3340
* [[Elka Synthex]] – 8 x CEM3320
* Elka Synthex – 8 x CEM3320
* [[Elka EK-22]] – 6 x CEM3396
* Elka EK-22 – 6 x CEM3396
* [[Ensoniq ESQ1]] – 1 x CEM3360, 8 x CEM3379
* Ensoniq ESQ-1 – 1 x CEM3360, 8 x CEM3379
* [[Ensoniq ESQ2]] – 1 x CEM3360
* Ensoniq ESQ-2 – 1 x CEM3360
* [[Ensoniq Mirage]] – 8 x CEM3328
* Ensoniq Mirage – 8 x CEM3328
* [[Ensoniq SDP-1]] - 10 x CEM3328
* Ensoniq SDP-1 - 10 x CEM3328
* [[Ensoniq SQ-80]] – 1 x CEM3360, 8 x CEM3379
* Ensoniq SQ-80 – 1 x CEM3360, 8 x CEM3379
* [[Ensoniq SQ-81]] – 1 x CEM3360
* Ensoniq SQ-81 – 1 x CEM3360
* [[Fairlight CMI II]] – 8 x CEM3320, in earlier versions
* Fairlight CMI II – 8 x CEM3320, in earlier versions
* [[Fender/Rhodes Chroma]] – 8 x CEM3350, 8 x CEM3360
* Fender/Rhodes Chroma – 8 x CEM3350, 8 x CEM3360
* [[Fender/Rhodes Polaris]] – 6 x CEM3372, 6 x CEM3374
* Fender/Rhodes Polaris – 6 x CEM3372, 6 x CEM3374
* [[Forat F9000]] – 4 x CEM3320
* Forat F9000 – 4 x CEM3320
* [[Hyperflange + Chorus]] by Craig Anderton - 1 x CEM3340
* Hyperflange + Chorus by Craig Anderton - 1 x CEM3340
* [[Hohner PK150]] - 1 x CEM3391
* Hohner PK150 - 1 x CEM3391
* [[Hohner PK250]] - 2 x CEM3391
* Hohner PK250 - 2 x CEM3391
* [[Keytek CTS-2000]] – 8 x CEM3389, 1 x CEM5530
* Keytek CTS-2000 – 8 x CEM3389, 1 x CEM5530
* [[Kurzweil K250]] – 8 x CEM3335
* Kurzweil K250 – 8 x CEM3335
* [[Linndrum]] – 2 x CEM3320, 1 x CEM3360
* Linndrum – 2 x CEM3320, 1 x CEM3360
* [[Linn 9000]] – 4 x CEM3320
* Linn 9000 – 4 x CEM3320
* [[Marion Systems MSR-2]] - CEM3397
* Marion Systems MSR-2 - CEM3397
* Marion Systems MS9C - 8 3387
* Marion Systems MS9C - 8 3387
* [[Moog Memorymoog]] – 12 x CEM3310, 19 x CEM3340, 26 x CEM3360
* [[Moog Memorymoog]] – 12 x CEM3310, 19 x CEM3340, 26 x CEM3360
* [[Mutronics Mutator]]
* Mutronics Mutator
* [[Oberheim DX]] – 3 x CEM3320
* Oberheim DX – 3 x CEM3320
* [[Oberheim DMX]] – 1 x CEM3320, or CEM3350 depending upon the voice card
* Oberheim DMX – 1 x CEM3320, or CEM3350 depending upon the voice card
* [[Oberheim Martix 6|Oberheim Martix 6 & 6R]] – 6 x CEM3396
* Oberheim Matrix 6 & 6R – 6 x CEM3396
* [[Oberheim Matrix 12]] – 12 x CEM3374, 12 x CEM3372
* Oberheim Matrix 12 – 12 x CEM3374, 12 x CEM3372
* [[Oberheim Matrix 1000]] – 6 x CEM3396
* Oberheim Matrix 1000 – 6 x CEM3396
* [[Oberheim OB-1]] – 2 x CEM3310
* [[Oberheim OB-1]] – 2 x CEM3310
* [[Oberheim OB-8]] – 16 x CEM3310, 16 x CEM3320, 16 x CEM3340, 2 x CEM3360
* [[Oberheim OB-8]] – 16 x CEM3310, 16 x CEM3320, 16 x CEM3340, 2 x CEM3360
* [[Oberheim OB-SX]] – 2 x CEM3310, 1 x CEM3320, 2 x CEM3340, 1 x CEM3360 per [[voice]]
* Oberheim OB-SX – 2 x CEM3310, 1 x CEM3320, 2 x CEM3340, 1 x CEM3360 per voice
* [[Oberheim OB-X]] – 2 x CEM3310
* Oberheim OB-X – 2 x CEM3310
* [[Oberheim OB-Xa]] – 16 x CEM3310, 8 x CEM3320, 16 x CEM3340, 2 x CEM3360
* Oberheim OB-Xa – 16 x CEM3310, 8 x CEM3320, 16 x CEM3340, 2 x CEM3360
* [[Oberheim Prommer]] – 1 x CEM3328<!-- or 3320?-->
* Oberheim Prommer – 1 x CEM3328<!-- or 3320?-->
* [[Oberheim Xpander]] – 6 x CEM3372, 6 x CEM3374
* Oberheim Xpander – 6 x CEM3372, 6 x CEM3374
* [[Octave Plateau Voyetra 8]] – 16 x CEM3340
* Octave Plateau Voyetra 8 – 16 x CEM3340
* [[Octave The Cat SRM II]] – CEM3340
* Octave The Cat SRM II – CEM3340
* [[JLCooper filter mod|Oberheim JLCooper filter mod]] – per voice: 1 x CEM3320
* JLCooper Oberheim filter mod – per voice: 1 x CEM3320
* [[Polyfusion Series 2000 Synthesizer]] - 3340 revision D only, revision A and B are based on the [[μA726]] and [[XR2207]]
* Polyfusion Series 2000 Synthesizer - 3340 revision D only, revision A and B are based on the μA726 and XR2207
* [[PPG Wave|PPG Wave 2.0]] – 4 x CEM3310, 4 x CEM3320
* [[PPG Wave|PPG Wave 2.0]] – 4 x CEM3310, 4 x CEM3320
* [[PPG Wave|PPG Wave, 2.2 and 2.3]] – 4 x CEM3360
* [[PPG Wave|PPG Wave, 2.2 and 2.3]] – 4 x CEM3360
* [[Rhodes Chroma]] – 8 x CEM3350, 8 x CEM3360 (some versions have 9)
* Rhodes Chroma – 8 x CEM3350, 8 x CEM3360 (some versions have 9)
* [[Rhodes Polaris]] – 6 x CEM3372, 6 x CEM3374
* Rhodes Polaris – 6 x CEM3372, 6 x CEM3374
* [[Roland Jupiter 6]] – 12 x CEM3340, 6 x CEM3360
* Roland Jupiter 6 – 12 x CEM3340, 6 x CEM3360
* [[Roland Jupiter 8|Roland Jupiter 8/MKS-80]] to serial #511799 (early models) – 8 x CEM3340, 4 x CEM3360
* Roland Jupiter 8/MKS-80 to serial #511799 (early models) – 8 x CEM3340, 4 x CEM3360
* Roland Jupiter 8/MKS-80 serial #511800 up (later models) – 4 x CEM3360
* Roland Jupiter 8/MKS-80 serial #511800 up (later models) – 4 x CEM3360
* [[Roland MKS-20]] – 5 x CEM3360
* Roland MKS-20 – 5 x CEM3360
* [[Roland Roland MC202]] – 1 x CEM3340
* Roland Roland MC202 – 1 x CEM3340
* [[Roland Roland SH101]] – 1 x CEM3340
* Roland Roland SH101 – 1 x CEM3340
* [[Sequential Circuits Drumtraks]] – 2 x CEM3320
* Sequential Circuits Drumtraks – 2 x CEM3320
* [[Sequential Circuits Max]] – 6 x CEM3394
* Sequential Circuits Max – 6 x CEM3394
* [[Sequential Circuits Multi-Trak]] – 6 x CEM3394
* Sequential Circuits Multi-Trak – 6 x CEM3394
* [[Sequential Circuits Pro One]] – 2 x CEM3310, 1 x CEM3320, 3 x CEM3340
* Sequential Circuits Pro One – 2 x CEM3310, 1 x CEM3320, 3 x CEM3340
* [[Sequential Circuits Prophet 10]] – 20 x CEM3310, 10 x CEM3320, 22 x CEM3340
* Sequential Circuits Prophet 10 – 20 x CEM3310, 10 x CEM3320, 22 x CEM3340
* [[Sequential Circuits Prophet 2000]] – 8 x CEM3379
* Sequential Circuits Prophet 2000 – 8 x CEM3379
* [[Sequential Circuits Prophet 3000]] – CEM3387
* Sequential Circuits Prophet 3000 – CEM3387
* [[Sequential Circuits Prophet-5]], Rev 3 – 10 CEM3310, 5 x CEM3320, 11 x CEM3340
* [[Sequential Circuits Prophet-5]], Rev 3 – 10 CEM3310, 5 x CEM3320, 11 x CEM3340
* [[Sequential Circuits Prophet 600]] – 12 x CEM3340, 4 x CEM3360, 6 x CEM3372
* Sequential Circuits Prophet 600 – 12 x CEM3340, 4 x CEM3360, 6 x CEM3372
* [[Sequential Circuits Six-Trax]] – 6 x CEM3394
* Sequential Circuits Six-Trax – 6 x CEM3394
* [[Sequential Circuits Split8]] – 8 x CEM3394
* Sequential Circuits Split8 – 8 x CEM3394
* [[Sequential Circuits Studio 440]] – 1 x CEM3360, 8 x CEM3389, 1 x CEM5530
* Sequential Circuits Studio 440 – 1 x CEM3360, 8 x CEM3389, 1 x CEM5530
* [[Sequential Circuits T8]] – 16 x CEM3340, 8 x CEM3372
* Sequential Circuits T8 – 16 x CEM3340, 8 x CEM3372
* [[Sequential Circuits VS]] – 8 x CEM3378/3379, 4 x CEM3360, 2 x CEM3365, 4 x CEM5510, 2 x CEM5530
* Sequential Circuits VS – 8 x CEM3378/3379, 4 x CEM3360, 2 x CEM3365, 4 x CEM5510, 2 x CEM5530
* [[Simmons SDS1000]] – 3 x CEM3394
* Simmons SDS1000 – 3 x CEM3394
* [[Simmons SDS200]] - 2 x CEM3394
* Simmons SDS200 - 2 x CEM3394
* [[Simmons SDS400]] - 4 x CEM3394
* Simmons SDS400 - 4 x CEM3394
* [[Simmons SDS7]] – – per module: 1 x CEM3340, 1 x CEM3372
* Simmons SDS7 – – per module: 1 x CEM3340, 1 x CEM3372
* [[Simmons SDS8]] – 5 x CEM3372
* Simmons SDS8 – 5 x CEM3372
* [[Simmons SDS800]] – 4 x CEM3394
* Simmons SDS800 – 4 x CEM3394
* [[Simmons SDS9]] – 1 x CEM3372, 3 x CEM3394
* Simmons SDS9 – 1 x CEM3372, 3 x CEM3394
* [[Solton Programmer 24]] - 1 x CEM3350
* Solton Programmer 24 - 1 x CEM3350
* [[Solton TS3]] - 3 x CEM3360
* Solton TS3 - 3 x CEM3360
* [[Solton TS4]] - 1 x CEM3360
* Solton TS4 - 1 x CEM3360
* [[Steiner EVI]] – 1 x CEM3340, 1 SSM2040
* Steiner EVI – 1 x CEM3340, 1 SSM2040
* [[Syntec Banana]] – 12 x CEM3310, 12 x CEM3340, 12 x CEM3360
* Syntec Banana – 12 x CEM3310, 12 x CEM3340, 12 x CEM3360
* [[Synton Synrix]] – 2 x CEM3310, 2 x CEM3340, 2 x CEM3350, 1 x CEM3360
* Synton Synrix – 2 x CEM3310, 2 x CEM3340, 2 x CEM3350, 1 x CEM3360
* [[Voyetra 8]] - 16 x CEM3340
* Voyetra 8 - 16 x CEM3340
* [[Waldorf Microwave1 revision A]] – 8 x CEM3389
* Waldorf Microwave1 revision A – 8 x CEM3389
* [[Waldorf Microwave1 revision B]] – 8 x CEM3387
* Waldorf Microwave1 revision B – 8 x CEM3387
* [[Waldorf Wave]] – 16 x CEM3387
* Waldorf Wave – 16 x CEM3387


=== DIY projects ===
=== DIY projects ===
* [[Böhm Soundlab]] – CEM3310, CEM3320, CEM3330, CEM3340
* [[Böhm Soundlab]] – CEM3310, CEM3320, CEM3330, CEM3340
* [[Deckard's Dream]] - 17 x CEM3340
* Deckard's Dream - 17 x CEM3340
* [[Digisound 80-10]] – 1 x CEM3310
* Digisound 80-10 – 1 x CEM3310
* [[Digisound 80-16]] – 1 x CEM3350
* Digisound 80-16 – 1 x CEM3350
* [[Digisound 80-18]] – 1 x CEM3310
* Digisound 80-18 – 1 x CEM3310
* [[Digisound 80-19]] – 1 x CEM3360
* Digisound 80-19 – 1 x CEM3360
* [[Digisound 80-2]] – 1 x CEM3340
* Digisound 80-2 – 1 x CEM3340
* [[Digisound 80-21]] – 1 x CEM3340
* Digisound 80-21 – 1 x CEM3340
* [[Digisound 80-3]] – 1 x CEM3340
* Digisound 80-3 – 1 x CEM3340
* [[Digisound 80-4]] – 3 x CEM3330
* Digisound 80-4 – 3 x CEM3330
* [[Digisound 80-6]] – 1 x CEM3320
* Digisound 80-6 – 1 x CEM3320
* [[Digisound 80-7A]] – 1 x CEM3320, 1 x CEM3335
* Digisound 80-7A – 1 x CEM3320, 1 x CEM3335
* [[Digisound 80-9]] – 1 x CEM3330
* Digisound 80-9 – 1 x CEM3330
* [[Digisound 80-C9]] – 2 x CEM3310, 2 x CEM3340, 1 x CEM3360, 1 x CEM3372
* Digisound 80-C9 – 2 x CEM3310, 2 x CEM3340, 1 x CEM3360, 1 x CEM3372
* [[Digisound 80 Dev-91]] – 1 x CEM3391
* Digisound 80 Dev-91 – 1 x CEM3391
* [[Dusk work Self-Tuning VCO]] - 1 x AS3340
* Dusk work Self-Tuning VCO - 1 x AS3340
* [[E&MM Spectrum Synthesizer]] – 2 x CEM3310, 1 x CEM3320, 2 x CEM3330, 2 x CEM3340
* [[E&MM Spectrum Synthesizer]] – 2 x CEM3310, 1 x CEM3320, 2 x CEM3330, 2 x CEM3340
* [[Elektor new synthesiser]] - 2 x CEM3310, 1 x CEM3320, 2 x CEM3340
* [[Elektor new synthesiser]] - 2 x CEM3310, 1 x CEM3320, 2 x CEM3340
* [[Elektor polyphonic synthesiser]] - per voice: 2 x CEM3310, 1 x CEM3320, 1 or 2 x CEM3340
* [[Elektor polyphonic synthesiser]] - per voice: 2 x CEM3310, 1 x CEM3320, 1 or 2 x CEM3340
* [[Juergen Haible Dual VCO]] - 2 x CEM3340
* Juergen Haible Dual VCO - 2 x CEM3340
* [[Kijimi]] - 16 x AS3340, 24 x CEM3360
* Kijimi - 16 x AS3340, 24 x CEM3360
* [[MIDIbox 3396]] – CEM3396
* MIDIbox 3396 – CEM3396
* [[Paia Proteus]] – 1 x CEM3310, 1 x CEM3320, 1 x CEM3330, 2 x CEM3340
* [[PAiA Proteus 1]] – 1 x CEM3310, 1 x CEM3320, 1 x CEM3330, 2 x CEM3340
* [[PAIA EKx-40 VCO]] - 1 x CEM3340
* PAIA EKx-40 VCO - 1 x CEM3340
* [[Powertran Transcendent polysynth]] - per voice: 2 x CEM3310, 2 x CEM3340
* [[Powertran Transcendent polysynth]] - per voice: 2 x CEM3310, 2 x CEM3340
* [[Thomas Henry]]: Deluxe VCO – CEM3340<ref name="th">Build a better music synthesiser by Thomas Henry, Tab Books Inc, 1987, {{ISBN|0830627553}}</ref>
* Thomas Henry Deluxe VCO – CEM3340<ref name="th">Build a better music synthesiser by Thomas Henry, Tab Books Inc, 1987, {{ISBN|0830627553}}</ref>
* Thomas Henry: A dual VCA – CEM3330<ref name="th" />
* Thomas Henry: A dual VCA – CEM3330<ref name="th" />
<ref name="sch" /><ref name="cemci">Curtis Electromusic [https://web.archive.org/web/20130502132536/http://curtiselectromusic.com/Customers_and_Instruments.html Customers and Instruments]</ref><ref name="sd">[http://www.sequencer.de/specials/synthesizer_chip.html Synthesizer Database] by Moogulator</ref><ref name="pp">[http://patchpierre.blogspot.co.uk/2012/02/cem-chips-in-doepfer-modules.html CEM chips in Doepfer Modules] by Pierre Serné, 28 Feb. 2012</ref><ref>[http://www.midibox.org/dokuwiki/doku.php?id=midibox_3396 MIDIbox 3396]</ref><ref>[http://www.digisound80.co.uk/digisound/modules/modules.htm Digisound 80 Synthesizer Modules]</ref><ref>Wikipedia:[https://en.wikipedia.org/wiki/CEM_and_SSM_chips_in_synthesizers CEM and SSM chips in synthesizers]</ref>
<ref name="sch" /><ref name="cemci">Curtis Electromusic [https://web.archive.org/web/20130502132536/http://curtiselectromusic.com/Customers_and_Instruments.html Customers and Instruments]</ref><ref name="sd">[http://www.sequencer.de/specials/synthesizer_chip.html Synthesizer Database] by Moogulator</ref><ref name="pp">[http://patchpierre.blogspot.co.uk/2012/02/cem-chips-in-doepfer-modules.html CEM chips in Doepfer Modules] by Pierre Serné, 28 Feb. 2012</ref><ref>[http://www.midibox.org/dokuwiki/doku.php?id=midibox_3396 MIDIbox 3396]</ref><ref>[http://www.digisound80.co.uk/digisound/modules/modules.htm Digisound 80 Synthesizer Modules]</ref><ref>Wikipedia:[https://en.wikipedia.org/wiki/CEM_and_SSM_chips_in_synthesizers CEM and SSM chips in synthesizers]</ref>
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== External links ==
== External links ==
* [https://web.archive.org/web/20080124170117/http://curtiselectromusic.com/ Curtis Electromusic] (archived)
* [https://web.archive.org/web/20080124170117/http://curtiselectromusic.com/ Curtis Electromusic] - archived
* [http://www.alfarzpp.lv/eng/sc/application.php Alfa application specific ICs]
* [http://www.alfarzpp.lv/eng/sc/application.php Alfa application specific ICs]
* [http://retrosynthads.blogspot.co.uk/2011/07/curtis-electromusic-specialties-what.html What a Difference a Chip Makes] a quarter page advertisement in Contemporary Keyboard, February 1980
* [http://retrosynthads.blogspot.co.uk/2011/07/curtis-electromusic-specialties-what.html What a Difference a Chip Makes] a quarter page advertisement in Contemporary Keyboard, February 1980
* [http://synth.stromeko.net/DIY.html#CEMpics Pictures of dead CEM chips] at Stromeko Synth World
* [http://synth.stromeko.net/DIY.html#CEMpics Pictures of dead CEM chips] at Stromeko Synth World
* [http://www.aes.org/e-lib/browse.cfm?elib=2639 A Monolithic Voltage-Controlled Amplifier Employing Log-Antilog Techniques], by Douglas R Curtis, JAES Volume 24 Issue 2 pp. 93-102, March 1976
* [http://www.aes.org/e-lib/browse.cfm?elib=2639 A Monolithic Voltage-Controlled Amplifier Employing Log-Antilog Techniques], by Douglas R Curtis, JAES Volume 24 Issue 2 pp. 93-102, March 1976
* [http://ssmcurtis.com/ SSM & Curtis Chips – Inside out]
* [http://ssmcurtis.com/ Synth's Inside Out]
* About the CEM3340 - [http://www.muzines.co.uk/articles/ics-for-electro-music/2561 ICs for Electro-Music (Part 1)] by Charles Blakey, Electronics & Music Maker, March 1981
* About the CEM3340 - [http://www.muzines.co.uk/articles/ics-for-electro-music/2561 ICs for Electro-Music (Part 1)] by Charles Blakey, Electronics & Music Maker, March 1981
* About the CEM3320, CEM3330 and CEM3310 - [http://www.muzines.co.uk/articles/ics-for-electro-music/2596 ICs for Electro-Music (Part 2)] by Charles Blakey, Electronics & Music Maker, April 1981
* About the CEM3320, CEM3330 and CEM3310 - [http://www.muzines.co.uk/articles/ics-for-electro-music/2596 ICs for Electro-Music (Part 2)] by Charles Blakey, Electronics & Music Maker, April 1981
* [https://gearspace.com/board/electronic-music-instruments-and-electronic-music-production/1016749-cem-curtis-love-thread.html CEM (Curtis) Love Thread], Gearspace.com, Jul 2015


== YouTube ==
* [https://youtu.be/rslPZYUMQMw New vs. old Curtis CEM3340 rev G comparison]
=== Data sheets ===
=== Data sheets ===
[http://www.sdiy.info/wiki/File:CEM3310_datasheet.pdf CEM3310], [http://www.sdiy.info/wiki/File:CEM3310_datasheet_long.pdf CEM3310 long],[http://www.sdiy.info/wiki/File:CEM3312_datasheet.pdf CEM3312], [http://www.sdiy.info/wiki/File:CEM3320_datasheet.pdf CEM3320], [http://www.sdiy.info/wiki/File:CEM3320_datasheet_long.pdf CEM3320 long], [http://www.sdiy.info/wiki/File:CEM3328_datasheet.pdf CEM3328], [http://www.sdiy.info/wiki/File:CEM3330_datasheet.pdf CEM3330], [http://www.sdiy.info/wiki/File:CEM3330-3335_long.pdf CEM_3330-3335 long], [http://www.sdiy.info/wiki/File:CEM3340_datasheet.pdf CEM3340], [http://www.sdiy.info/wiki/File:CEM3340-3345_long.pdf CEM_3340-3345 long], [http://www.sdiy.info/wiki/File:CEM3350_datasheet.pdf CEM3350], [http://www.sdiy.info/wiki/File:CEM3360_datasheet.pdf CEM3360], [http://www.sdiy.info/wiki/File:CEM3365_datasheet.pdf CEM3365], [http://www.sdiy.info/wiki/File:CEM3371_datasheet.pdf CEM3371], [http://www.sdiy.info/wiki/File:CEM3372_datasheet.pdf CEM3372], [http://www.sdiy.info/wiki/File:CEM3374_datasheet.pdf CEM3374], [http://www.sdiy.info/wiki/File:CEM3378_datasheet.pdf CEM3378], [http://www.sdiy.info/wiki/File:CEM3381_datasheet.pdf CEM3381], [http://www.sdiy.info/wiki/File:CEM3389_datasheet.pdf CEM3389], [http://www.sdiy.info/wiki/File:CEM3391_datasheet.pdf CEM3391], [http://www.sdiy.info/wiki/File:CEM3394_datasheet.pdf CEM3394], [http://www.sdiy.info/wiki/File:CEM3396_datasheet.pdf CEM3396], [http://www.sdiy.info/wiki/File:CEM5508_datasheet.pdf CEM5508], [http://www.sdiy.info/wiki/File:CEM5530_datasheet.pdf CEM5530]
[http://www.sdiy.info/wiki/File:CEM3310_datasheet.pdf CEM3310], [http://www.sdiy.info/wiki/File:CEM3310_datasheet_long.pdf CEM3310 long],[http://www.sdiy.info/wiki/File:CEM3312_datasheet.pdf CEM3312], [http://www.sdiy.info/wiki/File:CEM3320_datasheet.pdf CEM3320], [http://www.sdiy.info/wiki/File:CEM3320_datasheet_long.pdf CEM3320 long], [http://www.sdiy.info/wiki/File:CEM3328_datasheet.pdf CEM3328], [http://www.sdiy.info/wiki/File:CEM3330_datasheet.pdf CEM3330], [http://www.sdiy.info/wiki/File:CEM3330-3335_long.pdf CEM_3330-3335 long], [http://www.sdiy.info/wiki/File:CEM3340_datasheet.pdf CEM3340], [http://www.sdiy.info/wiki/File:CEM3340-3345_long.pdf CEM_3340-3345 long], [http://www.sdiy.info/wiki/File:CEM3350_datasheet.pdf CEM3350], [http://www.sdiy.info/wiki/File:CEM3360_datasheet.pdf CEM3360], [http://www.sdiy.info/wiki/File:CEM3365_datasheet.pdf CEM3365], [http://www.sdiy.info/wiki/File:CEM3371_datasheet.pdf CEM3371], [http://www.sdiy.info/wiki/File:CEM3372_datasheet.pdf CEM3372], [http://www.sdiy.info/wiki/File:CEM3374_datasheet.pdf CEM3374], [http://www.sdiy.info/wiki/File:CEM3378_datasheet.pdf CEM3378], [http://www.sdiy.info/wiki/File:CEM3381_datasheet.pdf CEM3381], [http://www.sdiy.info/wiki/File:CEM3389_datasheet.pdf CEM3389], [http://www.sdiy.info/wiki/File:CEM3391_datasheet.pdf CEM3391], [http://www.sdiy.info/wiki/File:CEM3394_datasheet.pdf CEM3394], [http://www.sdiy.info/wiki/File:CEM3396_datasheet.pdf CEM3396], [http://www.sdiy.info/wiki/File:CEM5508_datasheet.pdf CEM5508], [http://www.sdiy.info/wiki/File:CEM5530_datasheet.pdf CEM5530]

Latest revision as of 19:30, 27 November 2022

OnChip Systems formerly known as Curtis Electromusic Specialities.

The company

After working for four years at Interdesign, Inc. Doug Curtis went on to found Curtis Electromusic Specialties in 1979.[1] He did this specifically to design and manufacture integrated circuits for music synthesizers. Curtis Electromusic Specialties manufacturered a wide variety of ICs, many of which incorporated an entire synthesizer functional component, for example, the CEM3340, which contained a complete voltage controlled oscillator. By using chips from Curtis (and its competitor, SSM), synth manufacturers were able to considerably reduce the size of their circuitry. This (along with the advent of inexpensive microprocessor control) is what led to the wave of polyphonic analog synthesizers in the 1980s. By using the Curtis and SSM chips, manufacturers were able to shrink the size of their circuitry to where it could all fit in a package no larger than what was necessary to also house a keyboard and control panel.[2]

Later developments included more highly integrated circuits such as the 3389 signal processor and the 3396 synth-on-a-chip. The further miniaturaization led to the creation of rackmount synthesizers, played via MIDI from a master keyboard, and saving performers both money and space.[2][3]

OnChip Systems

In 1988 with the advent of digital technology and software, Doug Curtis broadened his focus beyond synthesizers forming OnChip Systems and did no further design work on music synthesis products, except for occasional consulting for synth manufacturers until his premature death in 2007. Several more patents in his name are assigned for chips designed into various commercial products.[2][4][5]

In 2016 OnChip Systems re-released the 3340, in response to Coolaudio's V3340 re-design of the part to the same specifications.[6][7]

Clones

Alfa Rpar AS produces the AS33xx equivalent ICs in DIP and SMT packages.

The designs

CEM ICs have part numbers of the form "33nn", and synth designers and techs often speak these part numbers without further attribution.[2] De-encapsulated (defective) CEM ICs are obviously bipolar arrays, although Interdesign or Ferranti die marks are missing. They exactly match the 1980 databook 201 Analog IC Designs from Interdesign.[1]

CEM ICs

[8][9][10][11]

Synthesizers using CEM ICs

Prebuilt

  • Akai AX-60 – 6 x CEM3394
  • Akai AX-80 – 6 x CEM3372
  • Akai VX600 - 12 x CEM3374B, 12 x CEM3378
  • Behringer Crave - 1 x CEM3340
  • Behringer Neutron - 2 x CEM3340
  • Buchla 296e – 1 x CEM3360
  • Cheetah MS6 – 6 x CEM3396
  • Crumar Bit 99 – 6 x CEM3328
  • Crumar Bit One – 6 x CEM3328 in late models
  • Crumar Composer – 2 x CEM3310, 2 x CEM3320, 2 x CEM3330
  • Crumar Spirit – 2 x CEM3340, 2 x CEM3350, 3 x CEM3360
  • Crumar Stratus – 6 x CEM3310, 6 x CEM3320, 6 x CEM3330
  • Crumar Trilogy – 6 x CEM3310, 6 x CEM3320, 6 x CEM3330
  • Doepfer A-106-6 XP Filter - CEM3379
  • Doepfer A-107 Multitype Morphing Filter - CEM3379
  • Doepfer A-109 Voltage Controlled Signal Processor - CEM3379
  • Doepfer A-111-1 High-End VCO - CEM3340
  • Doepfer A-111-2 High End VCO II/VCLFO - CEM3340
  • Doepfer A-111-3 Micro Precision VCO - CEM3340
  • Doepfer A-111-4 Quad Precision VCO - CEM3340
  • Doepfer A-111-5 Synthesizer Voice - CEM3394
  • Doepfer A-121 Multimode Filter - CEM3320
  • Doepfer A-122 24dB Curtis Low Pass Filter - CEM3320, CEM3379 in later versions
  • Doepfer A-123 24dB High Pass - CEM3320
  • Doepfer A-124 Wasp Filter - CEM3379
  • Doepfer A-126 Voltage Controlled Frequency Shifter - CEM3382
  • Doepfer A-130 Voltage Controlled Amplifier - CEM3381 in earlier models, alternately CEM3382
  • Doepfer A-131 Voltage Controlled Amplifier - CEM3381 in earlier models, alternately CEM3382
  • Doepfer A-132-3 Dual linear/exponential VCA - CEM3360 (early versions)
  • Doepfer A-134-1 Voltage Controlled Panner/Crossfader - CEM3381
  • Doepfer A-179 Light Controlled Voltage Source - CEM3320
  • Doepfer Dark Energy - CEM3394 (original model)
  • Dynacord Add-one - 8 x CEM3389
  • EH-30 Modular – 2 x CEM3310, 4 x CEM3330, 4 x CEM3340
  • Elka Synthex – 8 x CEM3320
  • Elka EK-22 – 6 x CEM3396
  • Ensoniq ESQ-1 – 1 x CEM3360, 8 x CEM3379
  • Ensoniq ESQ-2 – 1 x CEM3360
  • Ensoniq Mirage – 8 x CEM3328
  • Ensoniq SDP-1 - 10 x CEM3328
  • Ensoniq SQ-80 – 1 x CEM3360, 8 x CEM3379
  • Ensoniq SQ-81 – 1 x CEM3360
  • Fairlight CMI II – 8 x CEM3320, in earlier versions
  • Fender/Rhodes Chroma – 8 x CEM3350, 8 x CEM3360
  • Fender/Rhodes Polaris – 6 x CEM3372, 6 x CEM3374
  • Forat F9000 – 4 x CEM3320
  • Hyperflange + Chorus by Craig Anderton - 1 x CEM3340
  • Hohner PK150 - 1 x CEM3391
  • Hohner PK250 - 2 x CEM3391
  • Keytek CTS-2000 – 8 x CEM3389, 1 x CEM5530
  • Kurzweil K250 – 8 x CEM3335
  • Linndrum – 2 x CEM3320, 1 x CEM3360
  • Linn 9000 – 4 x CEM3320
  • Marion Systems MSR-2 - CEM3397
  • Marion Systems MS9C - 8 3387
  • Moog Memorymoog – 12 x CEM3310, 19 x CEM3340, 26 x CEM3360
  • Mutronics Mutator
  • Oberheim DX – 3 x CEM3320
  • Oberheim DMX – 1 x CEM3320, or CEM3350 depending upon the voice card
  • Oberheim Matrix 6 & 6R – 6 x CEM3396
  • Oberheim Matrix 12 – 12 x CEM3374, 12 x CEM3372
  • Oberheim Matrix 1000 – 6 x CEM3396
  • Oberheim OB-1 – 2 x CEM3310
  • Oberheim OB-8 – 16 x CEM3310, 16 x CEM3320, 16 x CEM3340, 2 x CEM3360
  • Oberheim OB-SX – 2 x CEM3310, 1 x CEM3320, 2 x CEM3340, 1 x CEM3360 per voice
  • Oberheim OB-X – 2 x CEM3310
  • Oberheim OB-Xa – 16 x CEM3310, 8 x CEM3320, 16 x CEM3340, 2 x CEM3360
  • Oberheim Prommer – 1 x CEM3328
  • Oberheim Xpander – 6 x CEM3372, 6 x CEM3374
  • Octave Plateau Voyetra 8 – 16 x CEM3340
  • Octave The Cat SRM II – CEM3340
  • JLCooper Oberheim filter mod – per voice: 1 x CEM3320
  • Polyfusion Series 2000 Synthesizer - 3340 revision D only, revision A and B are based on the μA726 and XR2207
  • PPG Wave 2.0 – 4 x CEM3310, 4 x CEM3320
  • PPG Wave, 2.2 and 2.3 – 4 x CEM3360
  • Rhodes Chroma – 8 x CEM3350, 8 x CEM3360 (some versions have 9)
  • Rhodes Polaris – 6 x CEM3372, 6 x CEM3374
  • Roland Jupiter 6 – 12 x CEM3340, 6 x CEM3360
  • Roland Jupiter 8/MKS-80 to serial #511799 (early models) – 8 x CEM3340, 4 x CEM3360
  • Roland Jupiter 8/MKS-80 serial #511800 up (later models) – 4 x CEM3360
  • Roland MKS-20 – 5 x CEM3360
  • Roland Roland MC202 – 1 x CEM3340
  • Roland Roland SH101 – 1 x CEM3340
  • Sequential Circuits Drumtraks – 2 x CEM3320
  • Sequential Circuits Max – 6 x CEM3394
  • Sequential Circuits Multi-Trak – 6 x CEM3394
  • Sequential Circuits Pro One – 2 x CEM3310, 1 x CEM3320, 3 x CEM3340
  • Sequential Circuits Prophet 10 – 20 x CEM3310, 10 x CEM3320, 22 x CEM3340
  • Sequential Circuits Prophet 2000 – 8 x CEM3379
  • Sequential Circuits Prophet 3000 – CEM3387
  • Sequential Circuits Prophet-5, Rev 3 – 10 CEM3310, 5 x CEM3320, 11 x CEM3340
  • Sequential Circuits Prophet 600 – 12 x CEM3340, 4 x CEM3360, 6 x CEM3372
  • Sequential Circuits Six-Trax – 6 x CEM3394
  • Sequential Circuits Split8 – 8 x CEM3394
  • Sequential Circuits Studio 440 – 1 x CEM3360, 8 x CEM3389, 1 x CEM5530
  • Sequential Circuits T8 – 16 x CEM3340, 8 x CEM3372
  • Sequential Circuits VS – 8 x CEM3378/3379, 4 x CEM3360, 2 x CEM3365, 4 x CEM5510, 2 x CEM5530
  • Simmons SDS1000 – 3 x CEM3394
  • Simmons SDS200 - 2 x CEM3394
  • Simmons SDS400 - 4 x CEM3394
  • Simmons SDS7 – – per module: 1 x CEM3340, 1 x CEM3372
  • Simmons SDS8 – 5 x CEM3372
  • Simmons SDS800 – 4 x CEM3394
  • Simmons SDS9 – 1 x CEM3372, 3 x CEM3394
  • Solton Programmer 24 - 1 x CEM3350
  • Solton TS3 - 3 x CEM3360
  • Solton TS4 - 1 x CEM3360
  • Steiner EVI – 1 x CEM3340, 1 SSM2040
  • Syntec Banana – 12 x CEM3310, 12 x CEM3340, 12 x CEM3360
  • Synton Synrix – 2 x CEM3310, 2 x CEM3340, 2 x CEM3350, 1 x CEM3360
  • Voyetra 8 - 16 x CEM3340
  • Waldorf Microwave1 revision A – 8 x CEM3389
  • Waldorf Microwave1 revision B – 8 x CEM3387
  • Waldorf Wave – 16 x CEM3387

DIY projects

  • Böhm Soundlab – CEM3310, CEM3320, CEM3330, CEM3340
  • Deckard's Dream - 17 x CEM3340
  • Digisound 80-10 – 1 x CEM3310
  • Digisound 80-16 – 1 x CEM3350
  • Digisound 80-18 – 1 x CEM3310
  • Digisound 80-19 – 1 x CEM3360
  • Digisound 80-2 – 1 x CEM3340
  • Digisound 80-21 – 1 x CEM3340
  • Digisound 80-3 – 1 x CEM3340
  • Digisound 80-4 – 3 x CEM3330
  • Digisound 80-6 – 1 x CEM3320
  • Digisound 80-7A – 1 x CEM3320, 1 x CEM3335
  • Digisound 80-9 – 1 x CEM3330
  • Digisound 80-C9 – 2 x CEM3310, 2 x CEM3340, 1 x CEM3360, 1 x CEM3372
  • Digisound 80 Dev-91 – 1 x CEM3391
  • Dusk work Self-Tuning VCO - 1 x AS3340
  • E&MM Spectrum Synthesizer – 2 x CEM3310, 1 x CEM3320, 2 x CEM3330, 2 x CEM3340
  • Elektor new synthesiser - 2 x CEM3310, 1 x CEM3320, 2 x CEM3340
  • Elektor polyphonic synthesiser - per voice: 2 x CEM3310, 1 x CEM3320, 1 or 2 x CEM3340
  • Juergen Haible Dual VCO - 2 x CEM3340
  • Kijimi - 16 x AS3340, 24 x CEM3360
  • MIDIbox 3396 – CEM3396
  • PAiA Proteus 1 – 1 x CEM3310, 1 x CEM3320, 1 x CEM3330, 2 x CEM3340
  • PAIA EKx-40 VCO - 1 x CEM3340
  • Powertran Transcendent polysynth - per voice: 2 x CEM3310, 2 x CEM3340
  • Thomas Henry Deluxe VCO – CEM3340[12]
  • Thomas Henry: A dual VCA – CEM3330[12]

[9][13][14][15][16][17][18]

See also

References

  1. ^ a b Pictures of dead CEM chips at Stromeko Synth World
  2. ^ a b c d Curtis Electromusic, Electronic Music wiki
  3. ^ About the Company, Curtis Electromusic
  4. ^ Doug Curtis, Curtis Electromusic
  5. ^ About the Company, Curtis Electromusic
  6. ^ Curtis Electromusic Specialties, Facebook, 5 June 2016
  7. ^ Curtis Family Speaks Out Against Behringer Synth Clone Plans Using CEM3340 by Rounik Sethi, Ask.Audio, 21 Mar 2017
  8. ^ CEM data sheets
  9. ^ a b Various schematics
  10. ^ Curtis Electromusic Product Overview
  11. ^ What chip do I have in my synth? at www.synthtech.com
  12. ^ a b Build a better music synthesiser by Thomas Henry, Tab Books Inc, 1987, ISBN 0830627553
  13. ^ Curtis Electromusic Customers and Instruments
  14. ^ Synthesizer Database by Moogulator
  15. ^ CEM chips in Doepfer Modules by Pierre Serné, 28 Feb. 2012
  16. ^ MIDIbox 3396
  17. ^ Digisound 80 Synthesizer Modules
  18. ^ Wikipedia:CEM and SSM chips in synthesizers

Further reading

  • Synthesiser IC's by H. P. Baumann, Elektor 078, Oct 1981, pp. 10-18
  • Electronic Music Circuits by Barry Klein, Howard Sams, 1982, ISBN 067221833X

External links

YouTube

Data sheets

CEM3310, CEM3310 long,CEM3312, CEM3320, CEM3320 long, CEM3328, CEM3330, CEM_3330-3335 long, CEM3340, CEM_3340-3345 long, CEM3350, CEM3360, CEM3365, CEM3371, CEM3372, CEM3374, CEM3378, CEM3381, CEM3389, CEM3391, CEM3394, CEM3396, CEM5508, CEM5530
Some are also freely available from Synfo.nl

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