MATRIXSYNTH: synth guts


Showing posts with label synth guts. Show all posts
Showing posts with label synth guts. Show all posts

Thursday, July 11, 2024

Welson Syntex (1977) restoration


video upload by M&M

"Hello everybody my Hobby it's restore the old Combo organ and Synth.
In this video i show you the restoration and test of Welson Syntex."

Monday, July 08, 2024

Waldorf Microwave Rackmount Wavetable Synthesizer REV.B (CEM 3387) SN 9543883

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


via this listing

Additional SYNTH CITY Listings

"Waldorf Microwave REV B loaded with the original CEM 3387 chipset. This unit has plenty of rack wear, but it fully functional otherwise. This unit is 230V and will require a setup down converter for North American operation. Fantastic sounding unit!"

Pics of the inside below.

Tuesday, July 02, 2024

Yamaha Ex5R Vintage Synthesizer Rack SN OM01562

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


via this listing

Well that stands out. Thought this was pretty funny. Reminds me of an old used RV, car, or stereo ads of the 80s.

You'll find some pics of the inside of the EX5R below.

Friday, June 28, 2024

Kawai SX-210 Analog 8 Voice Polysynth

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


via this listing

Pics of the inside below.

Fully overhauled by Synth Tailor Electronics

"Work done/service details:

-New production (SYN42) CPU Board installed (made by vintage standards In Japan)

-PSU Rebuilt, capacitors replaced with hi-reliability caps

-Replaced common failure components throughout for future reliability (electrolytic capacitors, CMOS, OP Amps)

-Full calibration to factory spec"

Thursday, June 27, 2024

Octave The Cat 37-Key Duophonic Analog Synthesizer with Manual SN A1553

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


via this listing

Pics of the inside below.

"Released during the era of the Minimoog and ARP Odyssey, Octave's The Cat is a classic analog synthesizer whose design closely resembles the ARP Odyssey, leading to legal action from ARP in the late 1970s. This monophonic/duophonic synthesizer features two oscillators capable of square and sawtooth waveforms, with VCO 1 also offering a triangle waveform. Each waveform can be played simultaneously and mixed, with additional sub-octave oscillators on each VCO for creating rich and interesting sounds.

The keyboard can switch between 2-voice (poly) and 1-voice (mono) modes. In mono mode, the two oscillators can be stacked for a rich mono-bass or mono-lead synth sound. Poly mode splits the oscillators into separate voices, allowing for slightly more complex melodies with overlapping notes or basic pads. The sub-oscillator plays an octave below the actual note, adding warmth and depth to your sounds.

The Cat has been used by artists such as The Dust Brothers, Chemical Brothers, Devo, Rod Argent, David Bedford, Lyn Berger, Dave Greenslade, OMD, Loaded, and Mixmaster Morris. This particular unit features an additional, unlabeled knob next to the pitch slider, which controls the modulation intensity on the VCO. When turned to its maximum value, it creates a "pulse-like" effect, producing an extreme pump sound wave. This unique modification enhances the synth's versatility and character.

The synthesizer is in very good condition, fully functional, and includes the bottom panel, which was removed only for photographing the circuitry and showcasing the clean internal workings. The only real sign of wear is the power cable is missing the grounding prong. Complete with the original manual, this vintage Cat synthesizer is a rare find for any enthusiast or collector."

Wednesday, June 26, 2024

SEQUENTIAL CIRCUITS SIXTRAK | tRANSFORMER SWAP, REFURB & CLEANUP


video upload by Mindburner

06:20 - battery swap
07:21 - transformer swap
08:19 - IEC mains socket
09:36 - OS upgrade
09:59 - DAC trim
12:22 - keyboard clean
17:10 - front panel removal

"This Sixtrak was a Japanese model at 110v
It had a buzzy loose transformer, so I swapped it out for a UK model."

Sunday, June 23, 2024

Oberheim Matrix 6R SN K 661677

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


via this listing

"Oberheim Matrix 6R - Rack Mount - 6 Voice MIDI Polysynth Synthesizer. Unit works great and is in overall very nice condition. Super clean inside and out! Comes with power cord."

Pics of the inside below.

Saturday, June 15, 2024

E-mu Systems SP-12 SN 392 w/ Dust Cover

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


via this listing

Additional Retro Gear Shop Listings

Pics of the inside below.

Note this one is currently not working.

Friday, June 14, 2024

Behringer Working on FPGA Based Elka Synthex Clone



Note the top pic appears to be the development environment while the bottom two are of a vintage Synthex. According to Behringer their Synthex is a couple years out:

"Recreating the Magic of the Elka Synthex

The Elka Synthex, a synthesizer from the early 1980s, is cherished for its rich, warm sound and unique character. Musicians like Jean-Michel Jarre and Duran Duran have used it to create iconic tracks, solidifying its place in music history. Designed by Mario Maggi and produced by the Italian company Elka, the Synthex has a storied past.

At Behringer, we're working to revive the Elka Synthex with a dedicated team of top-notch R&D engineers in Italy, where the original was created. Using advanced Field Programmable Gate Arrays (FPGAs), we're able to replicate the original circuitry and signal paths, capturing the essence of its distinctive sound.

The Role of FPGA’s

FPGAs help us recreate the immensely complex inner workings of the Synthex, ensuring we maintain its unique tonal qualities while improving reliability and performance. The two large chips in the center of the main board are Xylinx FPGA’s.

Honoring a Classic

Our goal is to make the classic sound of the Elka Synthex available to today’s musicians, combining its vintage appeal with modern technology. This passion project aims to respect the legacy of the Synthex while providing the enhancements needed for contemporary use.

Bringing back the Synthex

Stay tuned as we work to bring the Elka Synthex back to life, celebrating its history and sound with the same passion and innovation that marked its original creation.

This 'labor of love' project will take a few years, but it’ll be worth the wait as the Synthex is one of the most iconic synthesizers of all times. Send some love to Matteo and his R&D team."

Wednesday, June 12, 2024

Vintage 1970's - Hammond Analog Mono Synthesizer 102100 SN 391549

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


via this listing

Pics of the inside below.

Sunday, June 09, 2024

Roland SVC-350 Vocoder Plus Rackmount Analog Vocoder SN 403452

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


via this listing

"Fully functional, from a smoke-free environment. Rack ears are not original, they are high-quality machined aluminum new replacements made for the SVC-350."

Pic of the inside below.

Friday, June 07, 2024

Georges Jenny Ondioline

Note: Auction links are affiliate links for which the site may be compensated.
video upload by olivier olivier

"Full serviced Ondioline to sell (huge and amazing hours spent to service this superb Ondioline)"



via this listing

A few pics of the inside below.

"Nowdays Ondioline are becoming extremely rare even in France where they were hand-crafted during the 40's to 60's

This one is in VERY good condition AND is absolutely a real and magic pleasure to play- Nothing except original Ondes Martenot can provide such a feeling and so organic sounds !

Tuning is perfect (A440 on all 4 octave for each key)

This particular model has the great and very efficient improvement : Sub OSC for very loud sub harmonics if needed !

it has been fully serviced from September to December 2023 by very competent technician who spent around 50 hours to do the huge work needed for a very nice AND playable Ondioline

(this tech knows the Ondioline as he serviced in the past over 10 units)

He has done a very meticulous and respectful work (all electric wires have been changed, new components when necessary, PSU serviced, ground connection, all keyboard connectors cleaned for a good contact, and completely level keyboard...HUGE work !!)

the Knee level barrer is a new one, the string (useful for 'Castagnette' , Bongo ...) is the original one and of course efficient.

You might know there are differences between Ondiolines due to the technology evolution, hand made craft, components...) so please don't compare with an other one which will sound different

Have a look and listen to what this one is capable of

(video taken on 3rd April 2024 )"

Thursday, June 06, 2024

Vintage Roland Juno-106S Analog Synthesizer SN 521570

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


via this listing

Pics of the inside including the speaker enclosures below.

Monday, June 03, 2024

Roland Juno 106 with Kiwi Upgrade

Note: Auction links are affiliate links for which the site may be compensated.
video upload by ohm_studi_ohm

"The Kiwitechnics Kiwi 106 is a major upgrade to the iconic Roland Juno 106 which adds too many features to be listed here, so just check their website.
Among those the ones I think would alone justify the upgrade are: arppegiator, LFO extra waveshapes with sync possibilities and extra key modes (among which a real monophonic mode and a unison mode with adjustable detune). Here is a quick demo of those features.
Once again i'm only scratching the surface of what's possible with the mod but if you're familiar with the 106 sound and playability you'll have an idea of all the new territories it can cover.
Actually making it quite close to the Jupiter 4 (despite the Jupiter 8 style overlay :-)"


via this listing

"This unit was serviced and upgraded:
- Kiwitechnics Kiwi 106 upgrade was fitted and updated to the firmware v2
- The 6 VCA VCF voice cards were unsoldered and cleaned of their resin coating with acetone and fitted on sockets, so that in the future you could replace a faulty voice without any need for soldering.
- power supply capacitors were replaced
- 16 faders from the control panel (all the fader except for the HPF) were replaced by new ones
- original leds were replaced with blue ones
- blue display was fitted
- clear bender was fitted
- unit was calibrated
- SynthGraphics Jupiter 8 theme panel overlay was fitted. Please note this is based on the Kiwi 106 v1 so there are a few discrepancies in the layout since the upgrade is now in version 2. Only minor differences that would not justify an overlay replacement IMO

Cosmetic are very good with only minor signs of wear."

Sunday, June 02, 2024

Fender Chroma Polaris Model 2123B Analog Synthesizer Minus Half the Overlay

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


via this listing

Additional Retro Gear Shop Listings

This one is listed for parts. Thought it was interesting to see what's underneath the front panel overlay. Click on the pic to zoom in.

Pic of the inside below.

Thursday, May 30, 2024

Arp Rhodes Chroma Keyboard Expander Dual Channel Voice Boards

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


via these listings

Additional Retro Gear Shop Listings

"Rare vintage spare Dual Channel Bd circuit board Assy-7225601 Fab 30-5422801 for your Arp Rhodes Chroma Keyboard or Expander. Previous tech notes it was tested and working in 2015, but I have not tested it as I no longer have any Chroma keyboards to test with, so this is sold as-is with no guarantees, for parts/repairs. Very useful if you have a Chroma you need to restore and looking for this piece. We have many other rare Rhodes Chroma parts for sale, please check out our other listings."

Note the white board below is a Rev 3 board: "Assy-7225601 Fab 30-5422801 Rev 3"

Friday, May 24, 2024

1980s DIY Elektor Chorosynth

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


via this listing

"Ein Elektor Chorosynth.
Es ist dem Stylophone ähnlich, nur wurde hier eine Tastatur ergänzt.

Alle Funktionen sind soweit gegeben, der Klang ist ähnlich einer Orgel.

Die untere Taste hat keine Funktion (Kabel ab), ein paar Tasten haben leichte KontaktProbleme

die Bauanleitung findet man online.

Mit Stromkabel und Adapterkabel von DIN auf Klinke."

Googlish:

"An Elektor Chorosynth.
It is similar to the Stylophone, only a keyboard has been added here.

All functions are present, the sound is similar to an organ.

The bottom button has no function (cable disconnected), a few buttons have slight contact problems

The construction instructions can be found online.

With power cable and adapter cable from DIN to jack."

Pics of the inside below.

See this previous post for the board w/ touch plate only.

Wednesday, May 22, 2024

Octave Plateau Voyetra 8 Poly Analog Synth SN BN2804A

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


via this listing

Additional Retro Gear Shop Listings

Pics of the inside below.

"This is one of the great classics of vintage synthesizers, on similar league with other great classics like the Roland Jupiter-8, Elka Synthex, Sequential Prophets, Oberheims and Moogs. The Voyetra is a magical huge phat sounding machine with amazing capabilities. This one just got back from servicing by Peter at DoubleTake, one of the last experts around to handle and service these synths, with big cost and long wait time to get servicing completed. Peter gave it everything he felt it needed and Peter has been kind enough to offer communication with any new owner about the work and servicing done."

Friday, May 17, 2024

Oberheim Xpander

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


via this listing

Pics of the inside below.

Luma Luma-1 Walnut 120v Drum Computer

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


via this listing

Additional Retro Gear Shop Listings

Pic of the inside below.

See a Luma-1 vs LM-1 sound comparison with Roger Linn here, and see the Deftaudio label for additional posts.

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