[sdiy] Electronics International ETI-4600 History
richard at wentk.com
Mon Jun 25 15:57:49 CEST 2018
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:
> 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?
> Chris Juried
> Audio Engineering Society (AES) Member
> InfoComm-Recognized AV Technologist
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