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Re: Cruel rumors about flat LEDs

2002-10-14 by jmaddocks1975

yep you're right.
I just checked my Analogue Systems modules (I only have 3 VCLFO's 
though) and they all have flat LEDS's.....interesting.
Maybe doepfer couldn't source any, afterall Doepfer are German and 
Analogue Systems are English. What about Analogue Solutions, I have 
only 1 filter (MS20) has no LEDS's but do they use flat ones?
I wonder if American companies use Flat ones.


John.





--- In Doepfer_a100@y..., "(i think you can figure that out)" 
<petergrenader@h...> wrote:
> 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

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