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Re: Panning VCAs

2004-09-11 by Richard Brewster

Here is Dave's response, that he intended for the MOTM list too.

djbrow54 wrote:

>--- In motm@yahoogroups.com, Richard Brewster <pugix@n...> wrote:
>  
>
>>Now my first problem is how > to get a five to zero volt signal,
>>starting from a zero to five volt one.  I can't just use an
>>inverter, because the result will be going zero to minus five.
>>    
>>
>
>I built myself a set of inverters for this purpose.  They're part of 
>my analogic module.  They're switchable for inverting 0-5 volt
>signals or +/-5 volt signals.
>
>  
>
>>I just want an LFO that goes zero to +5V!
>>    
>>
>
>I use my PSIM for this.  Programmed it up with five selectable 
>waveforms and four outputs per waveform - three at 120 degrees and a 
>fourth that is variable.  The outputs can be in any range from 0 - 10 
>volts.  It's easy to program it for 5 volts
>
>  
>
>>So what do you folks use for VC panning?
>>    
>>
>
>I build an output module out of the Charlie Lamm / Mike Irwin VCA
>with dual inputs on each channel.  The inputs are or'd with diodes
>so it takes the greater of the inputs.  One input is to a jack and
>the other is to a 0-5 volt control.  This way I can set my minimum
>threshold for each channel.  The VCA is followed by an overall
>volume control for my power amp.  I also have a remote switch
>for control of the power amp (Carver PM-600)
>
>
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>  
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