Hello Jeff,
Although not on the shortlist yet, the CGS48 is one of the modules to be
converted in to Eurorack format for my Panther modules, I too would be
interested in any panel designs you get
Best Regards
(Mr) Laurie Biddulph
Phone: +61 (0)2 4340 0938
Mobile: 0400 257 645
Elby Designs
ABN: 70 022 727 605
http://www.elby-designs.com
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Although not on the shortlist yet, the CGS48 is one of the modules to be
converted in to Eurorack format for my Panther modules, I too would be
interested in any panel designs you get
Best Regards
(Mr) Laurie Biddulph
Phone: +61 (0)2 4340 0938
Mobile: 0400 257 645
Elby Designs
ABN: 70 022 727 605
http://www.elby-designs.com
This e-mail and any files transmitted with it are confidential and intended
for the addressee only.
If you are not the addressee you may not copy, forward, disclose or
otherwise use it, or any part of it, in any form whatsoever. If you have
received this e-mail in error please notify the sender and ensure that all
copies of this e-mail and any files transmitted with it are deleted.
Any views or opinions represented in this e-mail are solely those of the
author and do not necessarily represent those of Elby Designs.
Although this e-mail and its attachments have been scanned for the presence
of computer viruses, Elby Designs will not be liable for any losses as a
result of any viruses being passed on.
----- Original Message -----
From: "Jeff Laity" <synthetic@...>
To: <cgs_synth@yahoogroups.com>
Sent: Thursday, December 06, 2007 5:52 AM
Subject: [cgs_synth] VCO questions
> I'm looking at a pair of the CGS48 VCOs as my first project. I want to
> build it in Eurorack format (12V with an adapter power cable) using
> the 12V mods listed on the project page. I've done quite a bit of DIY,
> so I'm semi-confident I can handle this one. I have a few questions
> about the project:
>
> - I don't see an initial pulse width on the schematic. Could I just
> add a 100k lin pot with the wiper selecting between V+ and V- into a
> 120k and merge it with the PWM CV in, as the electronotes article
> shows? Or would I need to change resistor values?
> - If I'd like to add an additional FM in, can they just sum together,
> or would I need to change the resistors? Is there a danger of
> overloading the opamp if both are sending 12V?
> - To add an FM Amount control, is this just a 100k lin attenuator pot?
> - What's the difference between the Processor input and the FM input?
> Linear vs. Log scale?
> - If I'm not going to implement the suboscillator, just don't stuff
> anything past staircase in on schematic? Or do I need to ground any
> additional pins on LM3900?
> - If anyone has front panel layout ideas for Eurorack I'm all ears.
>
> Thanks, -jl
>
>
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> The CGS Modular Synth home page: http://www.cgs.synth.net/
>
> Yahoo! Groups Links
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