electro harmonix frequency multiplexer Blue BoX?

[Ambrose Chapel]

As a side note, the circuit in the Blue Box looks awfully similar to the sub-octave
section of the EH Guitar/Bass Microsynth.  Draw your own conclusions.

AC
----- Original Message ----- 
From: "Harry Bissell" <harrybissell at prodigy.net>
To: <chordman at earthlink.net>
Cc: <synth-diy at node12b53.a2000.nl>
Sent: Wednesday, August 30, 2000 10:29 AM
Subject: Re: electro harmonix frequency multiplexer Blue BoX?>


> The blue box is a curious beast indeed. I tried a spice simulation of a
> "simplified" blue boxx...  with bipolar supplies and the single supply
> bias
> removed.  Worked for SH!T  ! I think "how can this be ???"
> 
> Resimulated the 100% original circuit... it works very well. There is
> interaction
> in the power supply... probably an undocumented "hysteresis" for the
> comparator
> or perhaps some other feedback mechanism...
> 
> If you wish to clone it... make an exact copy.  I'm really very
> impressed!
> 
> Most designs have features that make you think that the original
> designer...
> 
> 1) Was VERY clever and is doing stuff so subtle YOU don't notice it
> all...
> ~or~
> 2) Was an absolute IDIOT.
> 
> I always assume #1 until proven wrong.  In this case I dont know if it
> was planned the
> way it is, or dicked with until it worked... your opinions ???
> 
> H^) harry
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