[sdiy] TH XR2206 VCO tune pot

[Derek Holzer]

And just when I thought we had everything worked out, I get a reply from 
Thomas Henry on the Electro-Music forum ;-)

Thomas_Henry wrote:
> Hi all,
> 
> It seems we go through this every six months or so.
> 
> My designs follow most of the Electronotes standards. Bernie was astute enough to plan ahead and come up with interfaces that are truly universal. I don't think his electrical standards can be improved upon.
> 
> In the case of a VCO like this, the Coarse, Fine and Exponential FM inputs are designed to accommodate any combination of control voltages: positive, negative, 0 to +10, 0 to +5, 0 to -5, 0 to -10, -5 to +5, -10 to +10, mixtures, etc.
> 
> By all means, feel free to change controller values for specialized standalone applications, but be aware that you're losing something kind of neat---a circuit that will do it's job without kluges, add-ons, extra modules, etc. in any patch on any synthesizer. The 100k and 3.3M resistors are features, not impediments thrown in without thought.
> 
> And for what it's worth, my design didn't specify an LFO switch, an idea I've never liked for several accuracy/tracking reasons.
> 
> Thomas Henry






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::: derek holzer ::: http://blog.myspace.com/macumbista ::: 
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