[sdiy] panning vca

Tom Wiltshire tom at electricdruid.net
Mon Feb 29 10:41:00 CET 2016


Isn't that just the CA3080 being noisy? It's not exactly a hi-fi chip...

On 29 Feb 2016, at 02:46, Joe <joe.frey at radioles.com> wrote:

> Hello there, I built this panning VCA and I am happy with how it sounds
> except there is a lot of background noise. I tried to audio trace the
> noise but I find it everywhere, even in the ground plane. Is there some
> advice that someone can give me about how to isolate it. Thanks.
> 
> On Sat, 2016-01-23 at 12:58 -0500, Joe wrote:
>> Thanks to all! You guys are the awsomest ever! Joe.
>> 
>> 
>> 
>> 
>> On Fri, 2016-01-22 at 16:13 -0500, Joe wrote:
>>> I am planning on building this single as a panning VCA by Richard
>>> Curcio.
>>> 
>>> http://www.sdiy.org/richardc64/mmvca/index.html
>>> 
>>> I can source a CA3080 and since I am only building one I am not worried
>>> about expense. Here's the thing, I don't know what pot values to use for
>>> the trimmers and I am definitely thrown by the current controlling DC
>>> trimmer, though I understand how to wire it. Can anyone take a minute(or
>>> few) to help me figure them out? Thanks, Joe.
>>> 
>>> _______________________________________________
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>> 
>> 
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> 
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