Aurora

[Tony Hardie-Bick]

On 05/12/12 17:09, Paul Maddox wrote:
> I'm using BC549s (NPNs) with opamp input summing and output
> instrumentation amps.
> My theory being, the opamps give you a nice clean sound into, and out of
> the filter, i.e. they don't mess with it, but you leave the filter core
> (the transistors) well alone, let the "tone" come  from the filter..

for sure :)

> I've also got a slightly non standard biasing on the transistors, so I'm
> pushing them a little more than normal, people tell me it won't work,
> but it does :)

i'd guess it's a combination of this, the LM13700 resonance vca, and the
fact the rest is clean, that gives it the different sound.

in the meantime, it's an instrument, which is more than the sum of any 
theories,
so i hope it'll do well.

Tony (HB)