[sdiy] Electronics International ETI-4600 History

[Quincas Moreira]

What a cool synth, I had no idea of it's existence!

On Mon, Jun 25, 2018 at 8:59 AM Richard Wentk <richard at wentk.com> wrote:

> It was based on an Australian design by (I think…) Trevor Marshall, and
> then serialised in ETI in the UK, and sold as a BOM with case hardware and
> panel by Maplin. (I’m not sure Maplin ever produced a complete boxed kit.)
>
> It’s an unusual design. The VCOs are linear, and the switched capacitor
> filter has a limited sweep range.
>
> I played with one for a while once. The sound was fine, but interfacing
> with anything else was always going to be a nightmare.
>
> Maplin used to sell a book with all the construction details and circuits.
> You can probably find a PDF somewhere online if you try hard.
>
> [Google] Turns out there’s a web site:
>
> http://www.eti4600synthesiser.org.uk/
>
> Richard
>
> On 25 Jun 2018, at 14:33, Chris Juried <cjuried at yahoo.com> wrote:
>
> Hi all,
>
> I was looking through some Electronics International magazines and came
> across the ETI-4600. Does anyone know the history behind the design of this
> synth?
>
> Sincerely,
>
> Chris Juried
> Audio Engineering Society (AES) Member
> InfoComm-Recognized AV Technologist
> http://www.JuriedEngineering.com <http://www.juriedengineering.com/>
> http://www.TubeEquipment.com <http://www.tubeequipment.com/>
> http://www.HistoryOfRecording.com <http://www.historyofrecording.com/>
> http://www.linkedin.com/in/chrisjuried
> *Email:* CJuried at yahoo.com
> *Voice:* (954) 478-4355
>
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-- 
Quincas Moreira
Synth Diy Guy
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