Wha'? Who? Whoa ... did I say that? :o Lol. Sorry about that Ken / etc.
It were 4 or 5 years ago that I built those 4. Maybe it were the 2N3906's
that I matched that way then. I'll have to check.
It were 4 or 5 years ago that I built those 4. Maybe it were the 2N3906's
that I matched that way then. I'll have to check.
On Thu, Dec 20, 2012 at 5:21 AM, <sasami@...> wrote:
> **
>
>
> Wrong transistors! We are talking about the 3x BC548 that drive the matched
> dual transistor.
>
> >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. :)
> >
> >
> >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]
> >
> >
> >
> >------------------------------------
> >
> >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]