Doepfer

Hate to break it to you guys - but the modules on my Analogue 
Systems gear, all of which is new,  all has flat tops.

Every single dang one of them.

So, it's not because of obsolesence.  But your observation is 
correct, not all LEDs are created electrically equal, so saying the 
flat tops respond quicker could be due it's electrical 
charactoristics as opposed to just a difference in luminance 
reflection of the domed lens.  I know from playing around with 
some filters that using LEDS in place of signal diodes within a 
circuit will give different coloring to the sound from one LED type 
to another.  Some sound warmer than others.  As silly as this 
seems, green ones are particularily warm sounding.  

John Blacet is famous for using leds within his circuits, on the 
circuit boards themselves.  He does this for sonic reasons with 
intention of bringing them to the faceplate.

I swear, I'm not making this up!

Peter



--- In Doepfer_a100@y..., "Joe Buechler" <buechlerjoe@t...> 
wrote:
> I recall reading somewhere that all of the A100 modules 
originally 
> had the flat red LEDs, and the Doepfer converted over 
completely to 
> the round orange-ish LEDs. I don't think any flat LED modules 
have 
> been produced since then, and it affected all of the modules, 
so it 
> didn't coincide with design mods as far as I know.
> 
> Its possible, though, that Doepfer has made changes to 
various 
> modules over time that haven't been reflected in version #s.
> 
> Maybe in a few years the flat LED modules will be considered 
a rare 
> collectors item ;-)
> 
> Joe
> 
> --- In Doepfer_a100@y..., "ethanzer0" <ethanzer0@y...> wrote:
> > --- In Doepfer_a100@y..., Paul Schulz <dasfonk@w...> wrote:
> > > No matter which type of LEDs they have, my A-140s are all 
marked: 
> > > "version1, 1995", so Doepfer don´t seem to have changed 
anything.
> > > So your idea of 'second sourcing' makes sense.
> > > 
> > > Paul
> > > 
> > > 
> > > Tim Stinchcombe wrote:
> > > 
> > 
> > I have 5 A-140s.  3 of which 
> > have flat LEDs.  Of the 3 that 
> > have flat LEDs, 2 have visably
> > different components on the PCB.
> > Different transistors, differetly
> > marked resistors, etc.  I can 
> > understand red versus blue transistors
> > as a sourcing issue, however, the banding
> > on resistors is supposed to be somewhat 
> > of a standard. The differences in these 
> > two seems to identical.
> > 
> > It just so happens that these 2 
> > are the 2 I like most.
> > 
> > Ethan