[sdiy] Dual power supply solution? - Kits vs 2600

[tomg]

It was suppose to be funny, should I have said
anal-retentive engineering? :) I didn't mean to
single Harry out or hang any sort of label on
him personally. There's lot's of people out there
in diy-land that build bullet proof stuff at a 
premium just for the folks who need that kind
of thing....

I'm it if you want to build a real modular without 
a home mortgage and I like it that way. You can 
still buy a Wildcat board w/pic and dac for $100 
bucks. Nobody is ever going to beat that without 
loosing money. It's only $40 bucks more that a
RXPro and there is one of those on the board.

It's a well known fact that most things can be 
modified in some way to improve performance.
Yves did a great job on the Wildcat and Harry
did good mods to a lot of  EFM modules. People 
used to change this or that on their Moogs and Arps.

That doesn't  mean that everybody that didn't 
had a defective or inferior instrument. I stay true 
to my mission. 

Regards
Tom





> I posted a lengthy offlist to Tom on the @nal
> retentive
> issue.
> 
> Here I will just say that in CLOSED systems where the
> designer has complete control, they may elect to
> delete
> voltage references if they do not cause performance
> liabilities... or give little improvement for the
> BUCK $$$.
> 
> In modular systmes with mix 'n match components... one
> designer (someone else) may FVCK your design because
> they piss in the swimming pool (power rails) and you
> did not equip yourself with goggles.
> 
> It could, or could not... happen to you.
> 
> Tom is indeed in good company 'trusting the rails'. I
> prefer not to. Then again I think that BBDs are noisy
> sh!tty sounding devices... and others love them for
> their warts.
> 
> H^) harry  (retentives anonymous :^)
> 
> --- phillip m gallo <philgallo at attglobal.net> wrote:
> 
> > Tom,
> > 
> > Calling the use of VREF circuits "anal-retentive"
> > does beg the definition of
> > that characteristic in context to synth devices. 
> > You may be right.
> > 
> > I know that VREFs are an important part of my
> > personal protection a
> > long-standing intolerance for sources of drift,
> > noise, and instability.
> > This intolerance is so severe that it may very well
> > meet your definition.
> > 
> > Lot's of equipment, perhaps the majority of
> > equipment, does not implement
> > VREFs from which crucial sources such as expo
> > current ref/frequency tuning
> > pots/comparator thresholds are derived.  Much of
> > this equipment is highly
> > regarded.  If you don't implement them you are in
> > great company.
> > 
> > 
> > Secondarily, your SMT adapter boards peeked my
> > interest, how seriously are
> > you considering making these available?
> > 
> > regards,
> > p
> > 
> > -----Original Message-----
> > From: owner-synth-diy at dropmix.xs4all.nl
> > [mailto:owner-synth-diy at dropmix.xs4all.nl]On Behalf
> > Of tomg
> > Sent: Tuesday, June 14, 2005 4:09 PM
> > To: Harry Bissell Jr; synth-diy at dropmix.xs4all.nl
> > Subject: Re: [sdiy] Dual power supply solution? -
> > Kits vs 2600
> > 
> > 
> > Just in case someone might actually believe all
> > that anal retentive paranoia..That there is
> > something
> > wrong with the way Arp designed the 2600 or
> > the way I designed the 3500 series.
> > 
> > Here's a sample of the Widcat SBM. It has 3 VCO4s
> > 3 VCFs, 4 ADSRs, 2 LFOs a bunch of other stuff and
> > a onboard RXpro... It is all powered from the same
> > 317/377 supply used for the 3500...
> > 
> > I hooked 1 vco to the output. The LFOs to the ADSRs
> > and the other 2 VCOs to the ADSRs. I am madly
> > turning
> > all cutoff, freq and fine controls as this was
> > recorded.
> > Gee Wiz!! What about that? No problem at all!
> > The little pop is me bumping the mic stand. I would
> > say
> > kiss my ass....but that would be childish :)
> > 
> > http://www.ele4music.com/pics/wildcat1.wav
> > 
> > Tom
> > 
> > 
> > 
> > --
> > No virus found in this outgoing message.
> > Checked by AVG Anti-Virus.
> > Version: 7.0.323 / Virus Database: 267.7.2/14 -
> > Release Date: 6/14/2005
> > 
> > 
>