Hi Dan,
The A-142 has an exponential converter controlling the discharge current of the main cap in there - presumably this gives a better 'feel' to the pot action than a straight linear relationship would. This expo converter has an 'offset' pot, the only trimpot on the board - you might be able to make the envelopes faster by adjusting this. It won't help with the fact that very small pot movements give big changes in the times - all it will do is shift where that point is - but it might give more discharge current (hence faster decay times) at the start of the range. If you have a DVM, you could check the range of voltages at pin 8 of the big chip (a TL084/74 ) as the decay pot is swept - if this doesn't look like it is saturating near the rail (10V or so) with the pot near zero, then it might be worth twiddling the trimpot (if it *is* already saturated with the pot at 0, tweaking the trimpot won't give you anymore!).

If you wanted to change the 'sensitivity' of adjustment to be able to more easily control the times, then you would need to alter a resistor or two to change the exponential relationship to a 'flatter' curve (I could probably make some suggestions).

Tim

--- In Doepfer_a100@yahoogroups.com , "leftbrain2002" <Leftbrain@...> wrote:
>
> My A-142 bothers me because the only range of short envelopes are all in the first few degrees from all the way down. As soon as I get up a bit, the envelopes are a few minutes long and can't even imagine the lenghths at 6 o'clock. I don't see any jumpers to change the range levels but wonder if this is how it's made or if there's something wrong with mine.
>
> Dan
> http://www.REwireMusic.com
>