Those in the 4 VCAs that have matched trannies (2 I believe and SSM2210s in
the other 2. 2 more to build.) ... were matched using the ancient Minimoog
technique.
For Ian's matching method I DO have a 5 1/2 digit high end bench meter.
I'm ok there and will be using that method for the next 2, even though my
latest shipment of 2N3904s are all from the same batch.
Once it's wired - go through the CV eliminating procedure and all should be
fine. :)
the other 2. 2 more to build.) ... were matched using the ancient Minimoog
technique.
For Ian's matching method I DO have a 5 1/2 digit high end bench meter.
I'm ok there and will be using that method for the next 2, even though my
latest shipment of 2N3904s are all from the same batch.
Once it's wired - go through the CV eliminating procedure and all should be
fine. :)
On Wed, Dec 19, 2012 at 10:50 PM, adematteo <adematteo@...> wrote:
> **
>
>
> Thanks Ken, i haven't actually wired it up yet but just noticed the note
> after reading over your page tonight.I'll wire it up and see how it
> sounds.Thanks,Tony
>
>
> --- In cgs_synth@yahoogroups.com, sasami@... wrote:
> >
> > If it is working to your satisfaction, leave it alone. :) If the
> transistors
> > are from the same batch, chances are they match already.
> > Ken
> >
> > >Hi guys,
> > >I recently built up the vca3 boards and didn't realize until after the
> fact
> > that it's recommended to match the bc548's.
> > >
> > >The fact that it's mentioned on Kens page makes me wonder if i should
> pull
> > them and match them (ie. how critical is this ?) ?
> > >
> > >Which leads to my second question what are we measuring and how are we
> > doing it ?
> > >
> > >I planned on building up Ian Frijtz's Transistor matching circuit for
> the
> > dual transistors on this and the vco boards so would i be able to use
> this
> > circuit to match the bc548's as well ?
> > >
> > >Thanks for any insight you guys can offer,
> > >-Tony
> > >
> > >
> > >
> > >------------------------------------
> > >
> > >The CGS Modular Synth home page: http://www.cgs.synth.net/
> > >Yahoo! Groups Links
> > >
> > >
> > >
> > >
> > __________________________________________________________
> > Ken Stone sasami@... otherunicorn@...
>
> > Modular Synth PCBs for sale <http://www.cgs.synth.net/>
> > Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
> >
>
>
>
--
Take care,
Warmth and Peace,
Rich
http://www.damian.deathlehem.com/ - my modular synth
http://www.soundcloud.com/Richarius - my latest composition snippets
http://www.youtube.com/dolphinicus/ - various module videos of mine / etc.
[Non-text portions of this message have been removed]