This Circuitry Is AMAZING - 1970s Music Synth Restoration

video upload by THIS MUSEUM IS (NOT) OBSOLETE

Maplin ETI 4600

Saving This Synth From The Scrapheap!! 1970s Maplin/ETI 4600 Restoration Part 2

video upload by THIS MUSEUM IS (NOT) OBSOLETE

"Today we try to fix this piece of history!"

ETI International 4600 Vintage Semi-Modular Synthesizer

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"This is a large semi-modular synthesizer, designed in Australia and released as a kit by Electronics Today International magazine in 1973. The large aluminium panel pivots forward for maintenance. Its 22x22 matrix switchboard, joystick, complex modulation and feature set is reminsicent of a larger EMS VCS3, a comparison enhanced by the use of genuine Cliff "little Dalek" knobs.

The main modules in the 4600 design were repackaged for the (smaller) ETI 3600 and the lightly larger Maplin 5600 kit synthesizers. Its notable features are volts-per-herz VCOS (rather than volts-per-Octave linear VCOs), complex Transient Generators that are like simple three stage sequencers, and a different-sounding VCF.

This is a rare, powerful and unique synthesizer that needs some TLC from a competent builder to unlock its potential.

STORY

In the early 80s before it had been completely built, it suffered damage (the plaster ceiling collapsed on it, because of a shoddy repair job after the previous tenants, a punk gang, had a "demolition party" that destroyed all internal walls). The keyboard was destroyed and there seemed little reason to replace it (the first 4600 keyboard circuitry was problematic and had been replaced by a design from the Fairlight team.) There was some scratches to the case and a lot of dust, though the pots did not seem scratchy.

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THE STRANGEST SPEAKER I HAVE EVER SEEN - The MegaLeslie w/ Hainbach & LMNC

video upload by LOOK MUM NO COMPUTER

Don't miss 13:42. Rare ETI vocoder.

"What is this Strange #lesie #speaker. Featuring @Hainbach If you'd like to see ful videos of us recording these songs real time! and also get loads of other things whilst supporting the project check out here! :-
https://www.patreon.com/posts/starre-... -------------
DOWNLOAD THE EP HERE :-
https://hainbach.bandcamp.com/album/r..."

A complicated 1980's kit to build a whole vocoder! POWERTRAN ETI VOCODER

video upload by LOOK MUM NO COMPUTER

"THE ETI POWERTRAN VOCODER

download sounds from this synth to use, here :-
https://www.patreon.com/posts/powertr...
https://www.patreon.com/posts/more-po...
https://www.patreon.com/posts/more-mu...
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SEPTEMBER 1980 ETI :-
https://worldradiohistory.com/UK/Elec..."

Micks Old ETI Analog Synthesizer

video upload by watikura

"Testing my old homemade 1975 synthesizer after cleaning, repairs and restoration. It's been sitting gathering dust and grime for about forty years but still works, just need to iron out a few more bugs still."

Rare Titan Synthesizer by Tim Orr of Powertran, Transcendent 2000, & Maplin ETI 4600

A Funky Uses For A Tape Machine and a massive Tape - MAGICALL E2 video upload by @THISMUSEUMISNOTOBSOLETE

Formant & Digisound get a mention as well. See this post for another video of the Titan and an article.

"Plans are a foot. if you want to get on the list use contact form below. if you'd like to Support the museum here :- https://www.patreon.com/lookmumnocomp...
--------
if you'd like to visit
information / contact:-
https://www.this-museum-is-not-obsole..."

ETI 4600 Analogue Synth

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Pics of the inside below.

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ETI Vocoder

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"THIS VOCODER WAS BUILT FROM ELECTRONIC DIY KITS ON SCHEMES FOR ETI ANALOG VOCODER"

Compare to this one minus the I/O and a different look.

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ETI & Formant Vocoder Demos

Published on Feb 28, 2016 Synthstation

Maplin ETI 4600 Synth

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Some info via the seller: "Ok...., as far as i can tell its a finished project all parts there on the circuit boards with just a few wires to connect, keyboard and power supply socket which i have.
I had an external power supply made up by a professional who knows his synths, (ex BBC tech)
he has been inside these beasts before.
He thinks the power supply may have been taken out and an external one used as inside is a reverb tank that could have been picking up interference from the original, Makes sense.

The keyboard itself looks as if its never been played as its in excellent condition and is still in need of fixing down, about 4 screws i think but all the wood inside it fixes to is fitted.

This will definitely need servicing and some of the pots/controls are a bit stiff so some spray could well sort them out, also as you can probably tell if you know these synths is that its missing all its coloured caps, i personally think it looks far better like this and not like a toy but again these can be easily sourced if you wanted it totally original.
It has 6 of the original pins for the matrix board and i will supply info as to where to get more if you want them, i have collected all i could from the web about this synth which includes the original building and setting instructions plus other stuff."

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International 3600 4600 Original Vintage Publication

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"Rare Australian publication 66 pages containing block diagrams, schematics, parts lists, theory of operation, PCB layouts, construction notes - everything you need to know in order to build a modular analog synth. Two models covered, International 3600 and 4600."

Seems like we are in a Maplin ETI run. Also posted in the last 30 days:

Joy Division Producer Martin Hannett's International 4600 Up for Auction?

ETI - Electronics Today International - Jan 1974: Full Scale Synthesizer Build

Maplin 5600S Analogue Vintage Syntheseiser Demo Video

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ETI - Electronics Today International - Jan 1974: Full Scale Synthesizer Build

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"How to repair calculators

Digital Stopwatch Project

Hi-Fi… Construction… Communications… Developments"

Maplin 4600

Maplin 5600S Analogue Vintage Syntheseiser Demo Video

Published on Sep 9, 2013 Monte Carlo·1 video

via this auction - learn how to sell on eBay here

"Demo of this rare, vintage, analogue matrix synth. All sounds are 'live'. The Deopher 'Dark Link' USB/MIDI to CV converter was used to interface PC to the synth to play a simple sequence.
This synth is for sale on Ebay (from 11.9.13) and privately elsewhere.
For full details check out the ebay listing."

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[DEMO] Powertran -- ETI VOCODER

Published on Jun 22, 2013 LESINDES·94 videos

"Very powerful and very RARE Vintage Vocoder
14 Bands"

ETI 4600 International synthesiser

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ETI 603 Sequencer and Friends: " Modular Lounge "

Published on Nov 11, 2012 by djessay101

"Trouby Modular Masterclock ( Master ), Roland DC-50 ( Space Effect), ETI 603 Sequencer + Korg MS-10 ( Bass ), DotCom Modular + Q119 Sequencer ( Beat + Sound ), Jupiter 4 ( Pad ), Jupiter 6 ( Arpeggio with Glide ), Fender Rhodes Mark1 88 with EH Holy Grail + Yamaha NE-1 Preamp + Roland SPH-323 Phaser, Pearl Syncussion SY-1 ( Sound )"

ETI 4600 Synthesiser Auction Video Overview & Demos

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YouTube Published on Aug 9, 2012 by MikeyJTUK
4 part video series for this auction.

"ETI 4600 synthesiser demonstration. This is being sold on eBay from August 15th 2012 and ending on August 25th. World-wide shipping is available. This is an overview showing the complete 1970s vintage analogue synthesiser with an overview of the modules and layout.

This synth was a state-of-the-art design when it was conceived back in the1970s. Designed by Trevor Marshall in 1973, this synthesiser was offered in kit form by Maplin Electronic Supplies (in the UK). The parts cost was around £500, and was said to match the performance of synthesisers costing £1500 - that equates to a staggering £15,600 in today's money (according to www.thisismoney.co.uk calculator). This is a collector's dream! This actual synthesiser is featured on the home page of www.eti4600synthesiser.org.uk website, is fully working, and is in great condition considering it is some 35 years old. This synthesiser was built by me in 1977 when I was a teenager and has remained in my possession until now.

Not only is this a great asset for lovers of nostalgia and early electronic music history, but also for the modern day sound design engineer who can sample these great 70's sounds and combine the wonderful early synthesiser sounds with the precision, reliability, automation, and flexibility of modern DAW's!

See the other 3 parts for an in-depth demonstration."

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Electronics Today International/Maplin 4600 Synthesiser

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"All components, pcb, keyboard, casing and internal hardware were supplied by Maplin in semi-kit form.

I personally constructed this in the late 70's , Maplin workshops set up all the boards that required it.

There is still a very small amount of work to do on this synth to complete it, the springline requires wiring in which is approx 4 wires, the joystick also requires final wiring up which is another small job. Anyone who remembers these synths will know about electronics and be able to follow the manual to complete it. The synth did play back in the 70's but I haven't used it since, I also don't have speakers etc now to listen to it on so I'm unable to run it now but there is no reason why it shouldn't work. You may find that some of the tantalum capacitors will require changing, it's usually the case with tants of this age, at least they would pop on my old Nascom which is from the late 70's. There is a very detailed manual which will come with the synth showing all the circuits and construction details, there is also a considerable number of pins for the patchboard. I have removed the back of the instrument whilst taking the photo's of the circuits for clarity, there is normally a back fitted."

Powertran ETI Vocoder 220V

This one is for sale in Spain.

220 v
european
recently serviced

If interested contact mentologo at hotmail.com.

ETI VOCODER - Analog Powertran

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