[sdiy] Verniers for Patch Recording

[Ingo Debus]

Am Mittwoch, 01.10.03 um 06:00 Uhr schrieb harrybissell:

> OTOH... 10 turn pots means slow changes.  Its like the difference 
> between
> the ARP Odyssey and the MiniMoog... the Minimoog excels in quick 
> changes
> because of the octave switch... but the Ody will allow slow fades over 
> large
> intervals with the sliders.
>
> IMHO I like to have both.  How about Coarse, Fine, AND an octave 
> switch.
>

I saw a clever solution on the Hohner RD500, an early digital 
reverb/delay unit. Basically it's one knob but two pots. Normally you 
turn the "fine" pot, but when you reach the limit you can turn the knob 
further with a little more torque: then the "coarse" pot is turned. 
This was used for the delay time setting, the absolute value was 
displayed on a three-digit 7-segment in milliseconds. You could dial in 
any value quickly and easily. I liked this much better than the usual 
endless-knob/"mouse accelerator"-approach.

This could be DIYed too. Just mount the "fine" pot on the axis of the 
"coarse" pot. Use a pot that requires a higher torque as "coarse" pot.

Ingo