[sdiy] spring reverb and pots

[Chris Crosskey]

I woudl suggest that the coarse tune pots would want to be cermet or
something similar

chrisc

> -----Original Message-----
> From: Tony Clark [mailto:clark at andrews.edu]
> Sent: 21 March 2001 15:54
> To: Nicholas Pelkey
> Cc: synth-diy at node12b53.a2000.nl
> Subject: Re: [sdiy] spring reverb and pots
> 
> 
> > I was about to order pots for my ASM-1 faceplate.  I'm 
> either ordering 
> > through Radio Shacks or Mouser.. and will probably be using 100k 
> > linear.... one thing that the Radio Shack guy stumped me 
> with was he had 
> > asked "how many amps?"  I never see much mentioned assides 
> from 100k and 
> > linear.  So my question is what are the other recommended 
> specs for pots 
> > asides from 100k, linear (or multi-turn)?
> 
>    Well at 100K, amps are irrelevant.  30 volts across 100K 
> only amounts 
> to 300uA worth of current.  So...unless you're running tubes in your 
> ASM-1 and dealing with 250-500V, you won't need to worry about the 
> rating.  You'll be better off just worrying about the size of 
> the pot and 
> the material it's made out of.
>    Also, you mentioned "linear (or multi-turn)".  I assume you meant 
> "linear vs. log"?  I think the ASM-1 assembly guide points out what's 
> best to use where.  As far as "single vs multi-turn", that's 
> up to you.  
> For certain things such as VCO tune, I like multi-turns with 
> nice verniered 
> dials, like EMS.  But it's unnecessary for things like your 
> EG controls!  
> And multi-turns can be a disadvantage if you want to tweak 
> things fast.  
> The best thing to do is have one of each so that you can use 
> one for fine 
> adjustment and the other for wild knob turning!
> 
>    Hope that helps answer your first question.
> 
>    Tony
> 
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