So, i knew something was confusing and i looked into my old emails...
dave wilson of NESM had explained it to me before and i just remembered it backwards:
NEW ALLIANCE EAST!!!!
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http://www.newallianceeast.com
http://www.newallianceaudio.com
http://www.myspace.com/newallianceaudio
http://www.c4rt.com
www.myspace.com/thecampaignforrealtime
dave wilson of NESM had explained it to me before and i just remembered it backwards:
"The Museum is doing well. The VCOs on the 200 are Hz/Volt, not Oct/Volt, so
they can be made to
track your Korg MS-20 or your Yamaha CS-40M, but not an ARP or Moog
synthesizer. The EML 101
has an output called "CM2" (Control Mode 2) that is a Hz/Volt output that
can drive the 200's VCOs.
Older EML 101s have a CM3, same thing but high note priority for duophonic;
More recent 101s have
a Sequencer input jack instead."
z
z
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http://www.newallianceeast.com
http://www.newallianceaudio.com
http://www.myspace.com/newallianceaudio
http://www.c4rt.com
www.myspace.com/thecampaignforrealtime
From: George Mattson <axisair@...>
To: emlsynth@yahoogroups.com
Sent: Wed, July 20, 2011 8:40:28 PM
Subject: RE: [emlsynth] Re: converting 1.2 volt/octave to 1 volt/octave
To: emlsynth@yahoogroups.com
Sent: Wed, July 20, 2011 8:40:28 PM
Subject: RE: [emlsynth] Re: converting 1.2 volt/octave to 1 volt/octave
The 200 is basically just a bare integrator IC with a UJT,
cap and diode network in the feedback loop. The center frequency and both
swings are all summed together after their input resistors into the ame op amp
input as the feedback network. The diode and UJT act as choppers to produce the
sawtooth output from the integrator.
The output of the op amp goes to the 470 ohm output impedance
resistor and capacitively coupled to the two outputs, which are hardwired to
each other.
There's no current control, differentiation or exponential
amplifier. So, it doesn't look like it was designed with any sort of scaling
capacity in mind.
From: emlsynth@yahoogroups.com [mailto:emlsynth@yahoogroups.com] On Behalf Of sprgroups@...
Sent: Wednesday, July 20, 2011 3:45 PM
To: emlsynth@yahoogroups.com
Subject: Re: [emlsynth] Re: converting 1.2 volt/octave to 1 volt/octave
> The 200 and 101 oscillators are a non-standard 1.20v/oct
Are you sure about the 200? The schematic I've seen looks
like a V/Hz oscillator. Or was there a later version of the 200
(201?)
Steve