[sdiy] Doepfer DIY Synth
dragons
dragon.servicing at googlemail.com
Mon Jul 5 20:48:41 CEST 2010
Hi,
I think that they should provide an example layout ( with component
values clearly marked ) and then the more experiences constructor can
change things if they want.
interesting that they can mix between the low pass and high pass outputs
on the filter, I wonder if you have a mixture of both do you get a band
stop filter ?
I think you have to be careful with pot markings as sometimes the
markings are reversed with b meaning log and a meaning linear.
( and wasn't there some other markings should as c = antilog ?)
regards Peter B
On 05/07/10 18:33, David G. Dixon wrote:
> Hey Simon,
>
> Any pot which adjusts the time constant of a passive RC network is almost
> always 1M log, as you have already noted. Otherwise, the rest are all
> either attenuators or straight pots, and can be linear and just about any
> value you like. Lower values give more linear response curves into finite
> impedances, while higher values use less current and therefore don't tax
> your power supply as much. I buy B100k (the "B" means "linear") Alpha pots
> by the hundreds to use for all of these applications.
>
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