PLAN B analog blog

I've added a album to the photo section of this blog entitled M15 HARD
SYNC.  It shows the location of R28 on both the Rev 1 and Rev flavors
of the Model 15.

To do this, either remove R28 altogether and replace it with a 10K, or
bridge a 12 K over the existing 56K.  The good news, based on where
R28 is located onthe rev 2 you don't have to open it up to do this
(thank god).

- P

Well, I suppose that answers the first part of the question.  I don't 
really want to make a permanent, soldered mod to my in-warranty VCOs, 
especially if the 15a is coming soon.  In the meantime, would simply 
amplifying the wave going into the sync jack get it to sync harder?

--- In PLAN_B_analog_blog@yahoogroups.com, "(i think you can figure 
that out)" <peter@...> wrote:

>
> I've added a album to the photo section of this blog entitled M15 HARD
> SYNC.  It shows the location of R28 on both the Rev 1 and Rev flavors
> of the Model 15.
> 
> To do this, either remove R28 altogether and replace it with a 10K, or
> bridge a 12 K over the existing 56K.  The good news, based on where
> R28 is located onthe rev 2 you don't have to open it up to do this
> (thank god).
> 
> - P
>

Nope.

That 56K current limits to the point that anything within the 12 volt
PSU range wouldn't get it much harder.

This is what I suggest:

Locate R28 from the photo, turn the unit over, solder a 12K across the
two pads where R28 is soldered. You won't even have to remove the
existing 56K. Easy as pie. I promise you I won't void your warranty.

Yes, the M15A will fix this, and while I finally fond a reliable way
to do the +/- octave function so the project is back off the back
burner, if I were you I'd go ahead and so what I just suggested. 
It'll take you about two minutes.



--- In PLAN_B_analog_blog@yahoogroups.com, "David Holt"
<dave_3283@...> wrote:

>
> Well, I suppose that answers the first part of the question.  I don't 
> really want to make a permanent, soldered mod to my in-warranty VCOs, 
> especially if the 15a is coming soon.  In the meantime, would simply 
> amplifying the wave going into the sync jack get it to sync harder?
> 
> --- In PLAN_B_analog_blog@yahoogroups.com, "(i think you can figure 
> that out)" <peter@> wrote:
> >
> > I've added a album to the photo section of this blog entitled M15 HARD
> > SYNC.  It shows the location of R28 on both the Rev 1 and Rev flavors
> > of the Model 15.
> > 
> > To do this, either remove R28 altogether and replace it with a 10K, or
> > bridge a 12 K over the existing 56K.  The good news, based on where
> > R28 is located onthe rev 2 you don't have to open it up to do this
> > (thank god).
> > 
> > - P
> >
>