FW: [sdiy] Aries modulars

[phillip m gallo]

When i received my AR-317 kit back in ~77 the schematic came as a blueprint.
Not a blue copy of the vellum drawing but as a blue copy of the blue print
(which was a blue copy of the vellum, this wasn't an uncommon technique back
then) this form of copy results in a low contrast but usable drawing.

The potted expo converter was hidden under blue "blot".  This "blot" when
held to the light did allow you to just make out the Q81 and three
transistors.  I penciled the components in and went on my happy way.

After all these years the pencil is about all that is left as the remaining
drawing is  quite faded.

A year ago i started to revise the DWG on the net to include the expo and to
correct any differences between the blue schematic and the net schematic.
Never finished but the schematic of the expo was:

http://www.geocities.com/phillipmgallo/ariesexpo.gif

As can be seen, it's what i call a standard "Boston" expo used by
ARP/CFR/DYNASYN/ARIES/ELECTRO-SCIENCEMART.

regards,
p


-----Original Message-----
From: owner-synth-diy at dropmix.xs4all.nl
[mailto:owner-synth-diy at dropmix.xs4all.nl]On Behalf Of JH.
Sent: Sunday, June 13, 2004 4:19 AM
To: Don Tillman; synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] Aries modulars


Hi Don,

nice to see these documents online now!
I'll download them and see if there's something I don't already
have, when I'm at a computer with higher bandwidth again.

Meanwhile, I checked the VCO page
http://www.leinermedia.com/Aries/AriesSchematics/AR-317s.gif
It's apparently the same drawing as I have, complete with the
expo converter shown as "U8".
Does any of the other documents shed some light on what U8 exactly is?

JH.

----- Original Message -----
From: "Don Tillman" <don at till.com>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Sunday, June 13, 2004 12:30 PM
Subject: [sdiy] Aries modulars


> 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
>
>
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