The Welson Brothers - late '70 Welson Syntex & WelsOne 4 oscillators prototype LiveJam as is

video upload by VSMI - Vintage Synths Made in Italy

"Welson Syntex with midi retrofit by Mirco Trentin play a sequence from Step Seq on Ipad
Free play on WelsOne 4 oscillators prototype (it's like 2 Syntex with more feutures)
Linn Drum sample on Ipad
Montarbo DRev 128"

Welson Syntex SN 152776

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via this auction

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video posted here

"This is a favorite - of all the Italian mono synths we got in the studio it stands out as a extremely versatile and powerful instrument with some really cool features.
It sports dual oscillators with 4 footages each, Moog ladder filter as well as white and pink noise. Watch the video of this very unit in action.
The Random Music button triggers random notes but can also be routed to control the LFO of the noise and filter sections to create rhythmic, drum-like patterns - here that snappy filter comes to good use.

The LFO triggering is stable so dialing in the tempo to an existing track is a breeze

This was serviced a few years back and still works great."

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Synthex Syntar Syntex - The Euclidean Sequences

video upload by VSMI - Vintage Synths Made in Italy

"Elka Synthex - Jen Syntar - Welson Syntex and Davoli Drum Synth plays with Music Pattern Generator
MPG is a fantastic Euclidean online Midi Pattern Generator plays on Chrome
Elka Synthex is a Midi retrofit official version
Welson Syntex and Jen Syntar are custom retrofit handmade by Mirko Trentin
Davoli Drum Synth play with a Midi to Trigger module by Elby Designs - Laurie Biddulph (Australia)

LFO Random Domain LiveJam - Welson Syntex/WelsOne/Jen SX1000/Jen SX2000

video upload by VSMI - Vintage Synths Made in Italy

"3 LFO oscillators and 1 random knob for Italian Synthesizers:
Welson Syntex (1974)
WelsOne (4 oscillators prototype late 70')
Jen SX1000 Synthetone (1977)
Jen SX2000 Synthetone (1978)" https://vsmi.bandcamp.com

A visit to the Marche Synth Museum

video upload by Guido Scognamiglio

"A visit to the Marche Synth Museum
Museo Del Synth Marchigiano (e Italiano)
July 2023
https://www.museodelsynth.org/"

Some of the synths featured on their site:

Eko Computerrythm
Elka Synthex
CRB Oberon
Crumar Spirit
Farfisa Compact Duo
Welson Symphony
Crumar Compac Synth
CRB Uranus 2
Elka Rhapsody
Farfisa Syntorchestra
Milton Gemichord
Logan String Melody

I also spotted a Welson Syntex recently featured in Hainbach's Blast of Sirens promo video. Solton RSC Polyvox at 1:59.

Vintage Italian synths.

You can find additional posts mentioning Marche Synth Museum here.

Ah! Kosmos & Hainbach - Blast of Sirens

video upload by HAINBACH

What's that at :20?

"This is the title track of my upcoming album with @ahkosmos - I am very happy to finally share this with you! You can stream and buy the full track everywhere now https://orcd.co/blastofsirens
We want to put out the album on vinyl - pre-order now and help us make it happen: https://hainbach.bandcamp.com/album/b..."

--
Welson Syntex at :21.

WELSON SYNTEX / VERMONA ER-9

video upload by

"Welson Syntex - our favorite Italian monophonic dual oscillators with 4 footages each, a Moog ladder filter and white and pink noise - you'll hear it in this video.
The Random Music button triggers random notes but can also be routed to control the LFO of the noise and filter sections to create rhythmic, drum-like patterns - here that snappy filter comes to good use.
What seems like a goofy novelty is actually pretty neat.
The LFO triggering is stable so dialing in the tempo to an existing track is a breeze - but I am thinking of putting MIDI and CV Gate in to this machine anyways - to be able to arpeggiate the Welson Syntex is the stuff of dreams.
Here I'm using some of the presets as well - they're surprisingly good - although most of them are not tweakable which is another thing I might look into.
This rather slim, elongated synthesizer growls and howls - it distorts on its own internally so no need to add distortion - but can also generate gentle and sweet flute and whistle sounds - summing it up its a versatile synthesizer.

Sitting in on second drums we got a German 'Ostie' - East German - machine - the Vermona ER-9.
It's thin but harsh sounding - very electronic - and quite a looker as well.
Just the way we prefer them - it's got separate volume controls for each sound."

You can find additional posts featuring the WELSON SYNTEX here.

WELSON SYNTEX

video upload by Vintage Audio Institute Italia

"It doesn’t beg for your attention - it demands it.
Welson Syntex is a great Italian monophonic synth - it’s kind of our favorite Italian monophonic machine.
It’s got dual oscillators with 4 footages each, a Moog ladder filter and white and pink noise - it can really sound huge. You’d think it has a third oscillator since it says oscillator 3 on the panel but it’s actually the LFO section.
This thing growls and howls - it distorts internally - but can also generate gentle and sweet flute and whistle sounds - summing it up its a versatile synthesizer.
On drums we got a German "Ostie" - East German - machine - the Vermona ER-9.
It's thin but harsh sounding - very electronic - and quite a looker as well.
Just the way we prefer them - it's got separate volume controls for each sound."

A Visit the Italian Synth Museum

video upload by Alex Ball

You can find additional posts featuring the museum here.

"Whilst taking a holiday in Italy we stopped off at Museo del Synth Marchigiano for a couple of days and this is the account of what I experienced there.

Enormous thanks to everyone at the museum, particularly Riccardo and Paolo.

https://www.museodelsynth.org/

0:00 Intro
1:19 Synket
4:40 EKO Computerhythm
8:01 Chilton Talentmaker
12:07 Crumar Compac Synth
13:41 Crumar DP-50
15:07 Elkatwin 61
16:29 Elka Synthex
19:38 CRB Oberon
21:29 CRB Voco Strings
22:53 CRB Uranus 2.0
24:34 Farfisa Polychrome
25:24 Logan Piano Strings Synthesizer
27:10 Welson Syntex
28:28 Keytek CTS-2000
29:47 Baleani Solista"

Welson Syntex - Random Radio Activity

video upload by VSMI - Vintage Synths Made in Italy

"the Welson Syntex is an italian Synthesizer Made in Italy (1977)
has a wonderful knob called !Random Music" that create some incredible and unique random VCO and VCF sound lines. 2 VCO, ADRS, 1 LFO Oscillator, Ladder VCF, VCA, Presets Sounds,
this synth is Midi version mod by Mirco Trentin
No Midi used in this performance!"

Additional Welson Syntex posts

Unisono#1 - Music for 1 note & 7 Synths

video upload by VSMI - Vintage Synths Made in Italy

"Music for 1 Note & 7 Synths Made in Italy playing in Unisono
/ CRB Vocostrings - Welson Syntex - Jen Synx-508 - Crumar Composer - Jen SX1000 - Elka Synthex - Keytek CTS2000"

V.A.I. 57 Böhm Solist / Welson Syntex / CRB 709

video upload by Vintage Audio Institute Italia

"Another round with these peculiar but very inspiring machines.
More info on their particularities in our previous video."

Follow-up to V.A.I. 58 - Welson Syntex / CRB 709 / Böhm Solist 78 / Emthree PFV3.

V.A.I. 58 - Welson Syntex / CRB 709 / Böhm Solist 78 / Emthree PFV3

video upload by Vintage Audio Institute Italia

This appears to be the first post to feature the CRB 709. You can search for gear via the search box on the top right of the site.

"All great instruments that have been featured before, the Böhm Solist 78 is such a great arrangement / songwriting tool, a auto accompaniment machine with a very distinct thin sound form the early 70s, built in Germany.
The rest of the gear is Italian, the Welson Syntex is a hidden gem of Italian synths, the ultra rare CRB 709 String machine is quite like the Elka Rhapsody 49 in timbre but still a bit different, it came equipped with a 5 inch power cable - thanks for that mod, previous owner. This song will be released later this spring, so all rights are reserved."

The Forgotten Synthesizers Of Marche Region

video upload by HAINBACH

Update: you can find additional posts featuring The Museo Del Synth Marchigiano here.

"The Marche Region in Italy was home to a thriving industry of music instrument production from the 1950s to the mid-90s. Tens of thousands of people made organs, accordions and small runs of synthesizers that were like nothing else in the world. Much production closed in the 90s, leaving only a few companies around, and many people lost their jobs. The history of Marche synths was not talked about, too bitter were the memories. The Museo Del Synth Marchigiano aims to change that - a motley crew of synth lovers work together to get the story about this special time in music instrument history out.

I was invited to play a show at Acusmatic Festival in Ancona and visit the collection before. I was overwhelmed by the amazing sounds these machines made, so I captured them on tape and for use in my performance. I also just had to film every synth I could get my hand for you to enjoy. You will find instruments by Siel, Elka, Elgan, Farfisa, Crumar, CRB and more here.

https://www.museodelsynth.org"

Timeline:

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Welson Syntex 1975 Nero SN 151551

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

via this auction

You can find previous posts featuring the Syntex including demos here.

"The rare 70's Italian BEAST. It produce a real blasting sound. Who knows it know what de talkin about... Recently service but: it need a cap for one fader, no lights on presets news and some parts of wood are broken and damaged (as you can see clearley from the pics ). It comes with a relic gig bag."

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Vai 32 : Solina String Ensemble, Binson Echorec B1s, Welson Syntex and Eko Rhythmaker

"Pretty self-explanatory but the Solina String Ensemble is going through the Schulte Compact Phasing and Binson Pre-Mixer and Echorec B1s, the Eko Rhythmaker is going through the Binson as well for tube saturation purposes.

The Welson Syntex is an Italian synth from the mid 70s, a great dual oscillator, analog, monophonic synthesizer with white and pink (!) noise, four footages per oscillator and lots of modulation capabilities.
That Moog ladder filter is on board as well, together with all the footages engaged it can really sound huge and sometimes terrifying.

We make these videos as a showcase for our studio and for curious vintage heads - and for fun.

We don't dilly-dally too much with production and mixing but it can sound pretty good with headphones on."

Drone Live Act - Welson Syntex 1974 & Armon SuperPiano 1978 (direct ambient wrong sound as is...)

Published on Apr 23, 2020 VSMI

"Welson Syntex 1974 & Armon SuperPiano 1978 - Vintage Synthesizers Made in Italy. Live recording as is with free birds! ;)"

Raining Day Live Jam... as is! (Elka Synthex, OMB3, Welson Syntex, Solton M160, EmThree Pulsatron

Published on May 14, 2019 VSMI

"big raining day outside... I turned on my Welson Syntex - Elka Synthex- Elka OMB3 - Solton M160 - EmThree Pulsatron Mixer and play as is!"

Welson Syntex Synthesizer Presets and more Demo

Published on Feb 11, 2015 Sergio Brunetti

"This is a DEMO of the 15 presets of this powerful Italian vintage synth. At the end of the video we have fun changing the VCO, VCF VCA and portamento controls. At the very end the Random Music push button is pressed, a sort of Sample and Hold. No effect is used and only the raw signal has been recorded. Obviously with some delay, reverb, compression the already good tones of the instrument can improve dramatically. Thanks to Claudio Laucci who has helped me in finding and playing some of the melodies and the rest."

Welson Syntex Ultra Rarer analoger Italo Synthesizer

via this auction

(English translation below)
"Biete hier an , einen Welson Synthesizer Typ Syntex .

Der Syntex funktioniert voll und lässt sich spielen aber in Anbetracht des Alters krachen die Schalter und knistern die Potis ,...wie halt von den meißten italo Synthis dieser Zeit gewohnt :-))

Natürlich hat er auch altersbedingte Gebrauchsspuren

Ungewöhnlich guter Filter , eindeutig einer der besten , diskret aufgebauten , in einem Italo mono Synth !

Total verrückte Sample und Hold Funktion :-) , volle ADSR Hüllkurve , LFO Modulation auf die 2 Osc , Filter und VCA

Wird mit Schaltplan als pdf geliefert

Zu sehen auf youtube in einem Grobschnitt - anywhere Video aus den 70'gern ,.........verdammt lang her :-(

Am liebsten Abholung , da dieser Synth doch sehr empfindlich ist ....Versand aber auf eigenes Risiko auch möglich

Ich hatte drei von denen .......hatten sich die letzten 20Jahre hier so angesammelt :-))

Hatte letztens schon mal einen hier versteigert , dies ist der 2.

Den letzten werde ich behalten

Und wie immer ..........

Leider keine Garantie , da Privatverkauf aus Sammlung

Da ich selbst Techniker bin , garantiere ich aber das der Syntex voll funktioniert

Up for sale here we have a full working Welson Syntex synthesizer .

Due its age = noisy slider and switches and signs of usage....but full working"

via Florian who provided this translation:

"I offer a Welson synthesizer of type Syntex. The Syntex is completely functional and can be played, but regarding its age some switches and potentiometers crackle - as most of the italian synths from this age.

Also there are optical traces of usage - corresponding to its age.

Exceptional good filter, definitely one of the best discrete built filters in an italian synth.

Totally crazy Sample and Hold function ;-), full ADSR envelope, LFO modulation on both of the two Oscillators, VCF and VCA.

Schematics will be delivered as pdf.

You can see this synth on youtube in a Grobschnitt - anyware video [remark: Grobschnitt is a mid to late seventies Krautrockband] ... damn' long ago.

I'd favour local pickup, since this synth is quite delicate ... shipping is possible but definitely on the risk of the buyer.

I had three of those ... they accumulated here somehow ;-))
Recently I sold one here. This one is the second I am selling. The last one I will keep.

As usual...
No Warrenty, since this is a private sale [remark: this is a legally required disclaimer in the EU]

Since my profession is technician I can confirm that the Syntex works completely."

Update: Found the video here. Embedding disabled unfortunately, so you will have to watch there. You can clearly see it at 1:59.