Photos of the EMS (Cornwall) Synthi A 2011
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I fully agree with you, still for the wiring, I was more thinking about the ARP2600 and TTSH. The 2600 being semi-modular, it has a lot of wirring inside (well packed but still), ...zhtee made a great job by putting the wirring on the PCB, then some kind of compromise could be possible i imagine. We could as well imagine the pin matrix being a button matrix and get rid of the pins...or even a touch surface...we're in 2014 after all...drewskee wrote:When you look at the guts of one of these machines you come to appreciate how truly complex the wiring is especially with the pin matrix. Thus its a bit hard to imagine a PCB constucted version ala an Arp Odyssey which has no patch points with sliders mounted to the circuit board...same with the MS20.beyourdog wrote: :
When you look at the new Macbeth with the touch keyboard and what they will cost the Synthi/VCS3 does not seem so overpriced. The Serge is closest to the level of wiring detail required...Buchla 200e and Euro falling more in the curcuit through panel approach. So it seems time/effort = $$$
Still, I fully agree to the fact, despite being VERY expensive, i would prefer getting a handmade VCS3 rather than....
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- Sine me up
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- Wiggling with Experience
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I don't know how his list works, but I moved from #133 to #116 since September of 2013. He told me it would be a two-year wait when I joined.
He did give me a rundown on the price of mods though My apologies if this has been posted before:
He did give me a rundown on the price of mods though My apologies if this has been posted before:
EMS Cornwall wrote:Here is some information which should answer most of your immediate questions about mods:
Prestopatch socket 215.00
Oscillator stabilisation (per osc) standard on new Synthis 18.00
Oscillator Sync - variable via potentiometer(per osc) 30.00
Voltage Controlled Shape (per osc) 25.00
Hi/Lo frequency range - switchable (per osc) 25.00
Portamento/glide 45.00
Attack time extension - increased to 5 seconds 15.00
X10 Envelope Attack/Decay time multiplier 25.00
Voltage Controlled Filter Response ('Q') 40.00
10-turn pots on input channels - for easier tuning (each) 20.00
Centre-zero trapezoid - gives inverted bipolar output 30.00
Patchable Voltage Inverter 35.00
Extra Input Channel 30.00
Switchable 18/24 db per octave filter 20.00
Filter 'unslew' switchable on filter's CV input 20.00
Main signal output mute switches (per channel) 20.00
External gate input – buffered 25.00
Prices are in pounds (GBP).
The most popular modifications are Oscillator stabilisation, Oscillator sync, VC Shape, Hi/Lo switchable oscillator range, patchable inverter and switchable filter un-slew.
If you want Hi/lo frequency range fitted to the oscillators bear in mind that Osc 3 will also need stabilization and a dual-transistor upgrade. Only Osc 1 and Osc 2 are stabilised as standard on new Synthis.
VC shape is good for thickening sounds - principally through Pulse Width Modulating Osc 2's square wave (also Osc 3 if Hi/Lo has been added there). Triangle/ramp shape mod is also available simultaneously. Note that VC shape for Osc 1 will just produce a crunchy distorted sine-wave and Osc1 ramp wave is not shape-controllable. The VC shape input is created by fitting a 3.5mm jack socket to the control panel to the right of the matrix (one per oscillator) with connection made direct to the matrix by a pin-to-3.5mm jackcord.
The switchable Filter 18/24 db per octave mode and switchable Filter Unslew are both recommended and good value. Unslew allows much faster modulation of the filter from a CV and hence an extension to the range of sounds available. You may have noticed how there is a slight portamento when you use the filter as an oscillator. The CV breakthrough in the 'unslewed' position also gives a nice click for percussive sounds when using a fast CV.
The maximum attack time on a standard Synthi is only about 1.5 seconds. The attack extension mod increases this to about 4 seconds. A further dramatic increase to the attack and decay times is also available with the x10 time multiplier mod. In combination with the attack extension mod this provides a maximum attack time of about 30 seconds with decays of up to 5 minutes.
The patchable inverter is a very handy tool as it simply turns a voltage upside down. For example if you have an ascending sequence of notes and feed this into the inverter you will hear a descending scale instead. Input and output are via a single pin-to-3.5mm cord providing the function at one pin location. This function also facilitates VC panning, inverted filter sweeps and many others.
Portamento needs an additional panel potentiometer and switch normally mounted down by the joystick.
VC Filter Response allows the Filter Response (resonance) to be voltage- controlled. Connection to it is made via a pin-to-3.5mm cord.
10-turn pots make for easier adjustment of the tuning spread when using the Synthi with a MIDI/CV converter or external CV input.
If you are intending to use a MIDI/CV interface it is also important to have the buffered external gate input for triggering the Synthi envelope.
Extra input channels share the joystick rows on the matrix, so they cannot be used simultaneously with the joystick. When switched on the Joystick range pot becomes the new input channel gain control. Bear in mind you can also use special pin-ended cables to inject external signals direct into the matrix if you run out of input and output channels.
The function of the prestopatch socket these days is usually to connect a Digitana break-out box. http://www.synthi.co.uk/aksmatrix.html
This should help towards sorting out which modifications are likely to be most useful to you.
I hope this finds you well and look forward to hearing from you in due course.
Best wishes – Robin Wood
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- papz
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Yeah push-pull pots to avoid drilling holes in the panel is the best way to implement Synthi mods
It's my own idea and I'm happy and proud Robin (and some other techs...) finally decided to offer it.

It's my own idea and I'm happy and proud Robin (and some other techs...) finally decided to offer it.

Finest EMS gear service and Music Easel/208 goodies
I'm not a synths dealer and I'm not aware of an inexpensive Synthi secret market, please don't ask me if I know one for sale.
I don't offer support of any kind to people attempting to build clones of EMS equipment.
I'm not a synths dealer and I'm not aware of an inexpensive Synthi secret market, please don't ask me if I know one for sale.
I don't offer support of any kind to people attempting to build clones of EMS equipment.
- papz
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Yes, I don't know if Robin will offer the push-pull option himself (he uses to do it with extra switches for so many years
), but if you ask him it should be ok, he's really a friendly and helpful man.
He contacted me last year to have some extra info about the push-pull pots implementation and to know where to purchase these because a customer asked him to mod his pristine A this way.
Btw, if you're located in continental Europe, I'll be happy to service your Synthi

He contacted me last year to have some extra info about the push-pull pots implementation and to know where to purchase these because a customer asked him to mod his pristine A this way.
Btw, if you're located in continental Europe, I'll be happy to service your Synthi

Finest EMS gear service and Music Easel/208 goodies
I'm not a synths dealer and I'm not aware of an inexpensive Synthi secret market, please don't ask me if I know one for sale.
I don't offer support of any kind to people attempting to build clones of EMS equipment.
I'm not a synths dealer and I'm not aware of an inexpensive Synthi secret market, please don't ask me if I know one for sale.
I don't offer support of any kind to people attempting to build clones of EMS equipment.
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I am on the waiting list for more than 4 years now and according to Robin will have to wait nearly another 2 years (end of 2015). So expect waiting at least 5 years IF he is catching up with the waiting list faster...otherwise...maybe get a Hornet - seriously! Saying this as a Synthi A(KS) owner for 20 years.
DomMorley wrote:Yes. I sent my cheque off today in fact. The waiting list is "massive" though, and it'll be at least 2 years before I get to the top of that list apparently. Gives me time to save up though!velocity wrote: Is he still taking orders of VCS3's then?
The difference for me is what's written on the tin...the EMS will hold its value and will always be a synth that is historically revered.
The Hornet..... ??
Cheers
The Hornet..... ??
Cheers
Vintage Knobhead !
New synth history album Vol 5 avail for free download !
Albums here
http://www.muffwiggler.com/forum/viewtopic.php?t=120834
Not too old to rock'n roll..not too young to die !
New synth history album Vol 5 avail for free download !
Albums here
http://www.muffwiggler.com/forum/viewtopic.php?t=120834
Not too old to rock'n roll..not too young to die !
I see what you mean, but despise historical reverence, with the Hornet available as a new synth, people will be less willing to spend 12-15 grand on a used original one and will go for the clone, especially when it starts to be readily available...and when people realise it sounds the same...NYMo wrote:The difference for me is what's written on the tin...the EMS will hold its value and will always be a synth that is historically revered.
The Hornet..... ??
Cheers
Basically, vintage EMS stuff prices will drop naturally, in a year or 18 months, when/IF the Hornet gets sold and keep on pumping, vintage EMS synths will sell for under 10 grand...maybe not for an AKS...but well...
Still, that’s true people would still pay quite a bit to get one of the new VCS3, because they are wonderfuly made...but for an old Synthi, why pay 12-15 grand for a used one when you get a new one for 7....
And when used Hornets will sell for 5 grand? People won’t buy used Synthis for 12 grand anymore...
I think things will get a bit more reasonable..., taking for example the Mini MS20, they were selling for 2 grand, vintage ones now sell for what $1000, $1200? since Korg announcement on the Arp Odyssey, how many people are now trying to sell their vintage one??? Knowing they'll get more money now on their Vintage one than in a year when the new ones arrives...
We can argue MS20s and EMS synth are different, well, not really, just old fashioned pieces of electronics for which hype/rarity did bring prices high until a substitute arrived on the market...
Let's see the first people's videos of the Hornet...mechanically there will be soon a bunch of:
- Original EMS Synthi A for sell...hate to sell it, but this is the real deal from EMS, original made from cheap components found on the flea market in London, unique chance to get a piece of history

- phutureboy
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I'm am always impressed by people who know what the future will be. You should go work at WallStreet you would be a millionairebeyourdog wrote:I see what you mean, but despise historical reverence, with the Hornet available as a new synth, people will be less willing to spend 12-15 grand on a used original one and will go for the clone, especially when it starts to be readily available...and when people realise it sounds the same...
Basically, vintage EMS stuff prices will drop naturally, in a year or 18 months, when/IF the Hornet gets sold and keep on pumping, vintage EMS synths will sell for under 10 grand...maybe not for an AKS...but well...
Still, that’s true people would still pay quite a bit to get one of the new VCS3, because they are wonderfuly made...but for an old Synthi, why pay 12-15 grand for a used one when you get a new one for 7....
And when used Hornets will sell for 5 grand? People won’t buy used Synthis for 12 grand anymore...
I think things will get a bit more reasonable..., taking for example the Mini MS20, they were selling for 2 grand, vintage ones now sell for what $1000, $1200? since Korg announcement on the Arp Odyssey, how many people are now trying to sell their vintage one??? Knowing they'll get more money now on their Vintage one than in a year when the new ones arrives...
We can argue MS20s and EMS synth are different, well, not really, just old fashioned pieces of electronics for which hype/rarity did bring prices high until a substitute arrived on the market...
Let's see the first people's videos of the Hornet...mechanically there will be soon a bunch of:
- Original EMS Synthi A for sell...hate to sell it, but this is the real deal from EMS, original made from cheap components found on the flea market in London, unique chance to get a piece of history...

FS: EMS Analyse Filterbank B1-II | EMS AKS | RSF Expander I & II | PEARL Syncussion SY-1 | KORG MS-20 | KORG SQ-10
- sascha.victoria
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Synthi prices fluctuate pretty drastically. I'm sure there will be more then one for $8k in the next year. There will also be more then one for $16k.beyourdog wrote:,,,I buy a put option on a vintage synthi for 8 grand within the next 12 months...phutureboy wrote:I'm am always impressed by people who know what the future will be. You should go work at WallStreet you would be a millionairebeyourdog wrote:...
wtb: silence
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Beyourdog sounds like he has a horse in this race somehow. Looking forward to checking out sound samples of a Hornet when one actually gets made, which I doubt will be tomorrow.beyourdog wrote:Tommorow you'll get a brand new Hornet for $7K...clones seems not to be a problem in the Buchla world...amnesia wrote:If I could get a great condition Synthi today for $8k I would buy it now.