Modular Synth Panels

What's confusing about this circuit is that there is more than one way  
to implement the output.

One method, as you've noted below, is to have two pots feeding into a  
two channel mixer. One pot sets the level of the unprocessed signal  
(or the DRY signal), the other pot sets the level of the resonator  
output (after the GAIN pots). A second is to have one pot that selects  
either the resonator output (full strength) at one end of the pot  
rotation, or the unprocessed signal (full strength) at the other end  
of the pot rotation, and a MIX of the two at points in between.

I prefer the two pot approach because once you've gotten the balance  
between the three filters figured out, you can then change the overall  
output level and mix in some of the unprocessed signal without having  
to futz with the three GAIN pots.

What you've got is good, despite not having 3 attenuators for the  
inputs (which is not critical). But Dave's 2U small-knob version has  
that, which is probably how I'll build mine.

On 10-Sep-09, at 2:21 PM, wjhall11 wrote:

> OK - and now for a correction from Jurgen... RESON on the PCB is the  
> resonator output level at the output jack.  DRY is the level of dry  
> input at the output jack.  So together, they act like a two channel  
> mixer.  If both levels are down, there's nothing at the output jack.
>
> I changed Will's drawing to reflect this change and also moved the  
> FREQ knob down per Scott Juskiw's idea.
>
> http://www.dragonflyalley.com/images/JHpolymoogResonator/JHPolymoogResV4vIIwidth1-92in.jpg
>
> Dave Brown, you'll want to reflect the RESON/DRY out change in your  
> 2U design too, right?
>
> Bill
>
>
> --- In ModularSynthPanels@yahoogroups.com, Scott Juskiw <scott@...>  
> wrote:
>>
>> I say, from top to bottom:
>>
>> GAIN
>> FREAK
>> EMPH
>>
>> By keeping FREAK in the middle you avoid any other possible conflicts
>> with rotary switches, which can also be larger than your average  
>> bear,
>> but that probably only matters for the more cramped 2U layouts.
>>
>> On 10-Sep-09, at 12:37 PM, wjhall11 wrote:
>>
>>> eeek - OK - we move FREQ down - what makes sense to be on top - GAIN
>>> or EMPHASIS?
>>>
>>>
>>> --- In ModularSynthPanels@yahoogroups.com, Scott Juskiw <scott@>
>>> wrote:
>>>>
>>>>> So in the case of a 3U large-knob version, I believe there's more
>>>>> space at the top anyway, right?
>>>>
>>>> Even using the standard big knob MOTM grid, you can't fit a 24mm  
>>>> pot
>>>> along the top. I tried that with my TLN-867 tuner/headphone thingy
>>>> and
>>>> had to swap the two pots at the last minute.
>>>>
>>
>
>
>