Germanium?

[Michael Zacherl]

> On 5 Feb 2019, at 14:32, Tony Hardie-Bick <tony at entity.net> wrote:
> 
> On 05/02/2019 13:17, Michael Zacherl wrote:
>> 
>>> On 2 Feb 2019, at 16:58, Tony Hardie-Bick <tony at entity.net> wrote:
>>> 
>>> they're using silicon
>>> transistors instead of germanium,
>> 
>> uhm, Tony, did I miss something? Germanium?
> 
> the original moog ladder filters used germanium transistors, iirc.
> 
> that gives them a lower Vbe of around ~ 0.4V?
> 
> this was mentioned by Uli Behringer, where he was discussing the
> circuits in-depth (on a mailing list, iirc)

Tony, you got a source for this?
The presumably oldest type I could find was TIS97.
And the patent isn’t specific about the type and make of the transistors.
Cheers, m.