Wiardgroup

Hi Randal
--- In wiardgroup@yahoogroups.com, "randaleem" <randaleem@...> wrote:
> Here's a link to useful Aries Info including schematics: 
> http://leinermedia.net/aries/home.html
> 
thanks for pointer, i had completely forgotten about this valuable
site. That's a great ( and nostalgic) photo of the staff, incl. Carl
Fravel, Dennis Colin, and Ken Perrin.
(although, amongst the contributors,  think they forgot the 'k' at the
end of John's name!)
ah well , at least the schematics are highly legible
Thanks!
=)

> The AR-314 is a LowPass VCF and the epoxy-blocked part is the expo 
> converter which should not be too difficult to figure out from the 
> rest of the circuit. I also believe I've seen its schematic online 
> somewhere, but I don't recall where just now. 
> 


My VCF is the AR327, it was a second generation design which added
HP,BP & notch outputs, also VC Q (which is particularly germane in
this thread), and a really nice dynamic 'Q-clamping' feature, which
was really quite advanced for it's time.

The epoxy-potted bits on my PCB are also different than the U6
expo-converter shown in the  314, but at it's core it appears to still
be a pretty garden-variety state variable.

-doc