[sdiy] CV keyboard divider resistor precision

[Tom Arnold]

While attempting to tune a couple VCO boards I got fed up and made a little
box with a rotary switch that selects across a divider network.  I used 1%
10k resistors because they were what I had on hand but they dont seem to be
quite accurate enough.  

What tolerance resistors are typically used for this?  I see the minimoog
uses 1% but they are also much lower resistance ( 10ohm ).  A surplus place
near me has some 4.5k .01% fairly cheap which I was thinking of picking up
which should be more then adequate.  I'm also going to get a precision
voltage regulator or 2 from them so my 10v is very stable ( my bench supply
drifts a little ).

As my "build millions of filters" project finally nears completion, my next
task is building VCOs so I figure a little investment will save me some time
and heartache in the coming months.  Oh, and if anyone can talk Tony into
doing one last run of Filtrix boards, I recommend it.  Finally got mine
racked and its a beast I've actually had the thought "Maybe I should have
gotten 2..."

-- 
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 - Tom Arnold       -  Free Synth DIY webspace http://www.sdiy.org 
 - SynthGeek        -
 - BBD Fanatic      -  "...is it a virus, a drug, or a religion?" 
 - echo evho wjxo   -    Juanita Shrugs. "What's the difference?" 
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