PLAN B analog blog

Phil - I'm really glad you did this module. You know what you're
doin', which mens you can spot a dud a mile away. but...

..your's only has one 2164? and it works?

Just kiddin'!

When i wrote that blurb the final circuit hadn't been completed yet. 
Thanks for reminding me I need to change this. Turned out we only
needed one.  

Regarding the missing components on one of the boards - If you've
noticed, the M14 consists of two identical boards.  Yet only one is
fully populated.  The section on board 2 that isn't populated is the
crossfader (only need one per board).  It's less expensiive to order
twice the qty of one board type than two different boards. That's why
we went this route.  The M14 is expensive, there's a lot in there and
I wanted to keep it as affordable as possible.  

You may also notice a nifty jumper matrix in front of each pot on the
PCB - this is how we handled mounting the pots on opposite sides of
the boards while keeping the polarity correct on each.  You route the
jumpers one way on one board, and switch the jumper locations on the
other board so that the same end of the pot goes to the same modes in
the circuit.  There's another matrix coming on the model 16 - even
more complex.  The bottom pot of each of the filter boards (there are
three) serves a completely different function on each (b1 it's a level
pot, b2 it's a resonance control, b3 it's the sweeper) and the matrix
is used to route each pot into the correct componentry to do the task
we need it to do. SO on the model 16, there are three identical boards
which keep sthe price much lower. Kind of proud of how that worked out.

- P  




--- In PLAN_B_analog_blog@yahoogroups.com, phil hendricks <ph@...> wrote:
>
> thanks Peter!
> my m14 only has one SSM2164 yet the info states it has a pair of them?
> What gives?
> there's space on the 2nd PCB for another.
> Just curious, so far it seems to work as expected and is proving to be a
> most essential module.
> This thing is great a huge hit. thanks!
> it's just so darned(fucking) useable.
> i think we all need at least two, one dedicated to audio and for CV.
> best,
> phil
> 
> 
> 
> 
> On 9/9/06 7:15 PM, "(i think you can figure that out)"
> <peter@...> wrote:
> 
> > A tip:
>