DMS-1 - mustang/duo-sonic short scale

[Simon Barden]

Hi Simon-
on the point of pots. I thought that the B pots delivered a consistant change through out the sweep and the A pots were mostly in a quarter of the sweep. thats why i chose the B pots. am i wrong there?

It depends whether you are talking about resistance or about the audio results. B/linear pots give you a linear change in resistance throughout the sweep, whilst A/log/audio pots do have the resistance change all bunched up at one end.

But our ears don't hear volumes in a linear manner, but a logarithmic one. We have a very wide dynamic range of hearing, and can hear very, very quiet sounds indeed, all the way up to extremely loud ones. If our hearing was linear, the louder sounds would simply swamp (what are to us) slightly quieter ones, so that talking in a (pre-Covid) restaurant would be almost impossible.

So the change in resistance needs to be logarithmic too, to match the way we hear. Only then do we get a change in volume that appears linear to our hearing.