[sdiy] Aries modulars

[Don Tillman]

Hey folks, 

I had vaguely heard of Aries modulars in the past, but today I
happened to run into this web site that documents them pretty well.
Check it out:

  http://www.leinermedia.com/Aries/AriesHome.html

Here are the interesting things I learned:

  1. Dennis Colin, known for much of the design work on the ARP 2500
     and ARP 2600, was apparently the main designer of the Aries
     modules. 

  2. The modules are very ARP-like in design, philosophy, voltage
     levels, circuit details, etc.  'Not surprising.

  3. Their VCO is a triangle core, with a parallel sawtooth
     integrator, thus eliminating any possible glitch in the
     triangle-to-sawtooth converter at the expense of possible
     sawtooth level inaccuracies.  This relates to the recent
     discussion here.

  4. They have a voltage controlled phase shifter that appears to be
     the same as the one on the ARP Quadra, but without the noise
     reduction circuitry.  And it seems to be 10 stages instead of
     14. 

Very cool stuff.

  -- Don

-- 
Don Tillman
Palo Alto, California
don at till.com
http://www.till.com