[sdiy] simple circuit to adapt pedals in a module?

[Tom Wiltshire]

Completely agree with Derek. You can't strip much from the CGS60.  
It's pretty much as minimal as can be and still do the job adequately.
If the jacks are a problem, solder wires directly to the PCB - the  
circuit remains the same, but you might make it cheaper by leaving  
out the hardware.

T.

On 25 Jan 2010, at 17:33, Derek Holzer wrote:

> I can't really imagine a much simpler circuit than the CGS 60.
>
> On the "to effects" side, it just chops down the voltage of the  
> signal with a passive voltage-divider by a factor of 20.
>
> On the "to synth" side, it uses a simple, non-inverting op-amp  
> buffer to boost the weak effects signal 20x.
>
> If your effects won't go back into the synth, you can even leave  
> the second part out.
>
> But both of these things will need to be done to get the levels  
> matched bi-directionally. The ratios could be changed, but the  
> circuit would remain the same. Alternately, if you only want to  
> send to the effects then a single pot wired as a voltage-divider  
> would allow you to adjust the "to effects" level.
>
> Why not breadboard this one?
>
> D.
>
> legion at helpwantedproductions.com wrote:
>> I'm working on making some guitar pedals and other kit designs  
>> that run
>> off a 9vt PS and take a high input into my modular synth. I've got  
>> the
>> power/regulator circuit down but was wondering if there is a simple
>> circuit to allow the mismatched audio signals to talk to each other
>> easily. I'm familiar with the CGS 46 and CGS 60 PCBs but was  
>> hoping for
>> something a bit simpler without the jacks and such since I might  
>> make some
>> old 9vt pedals into a module and also mount some module PCBs to  
>> make them
>> into guitar pedals. I just need a few builds of the basic part to
>> experiment with before I decide what I'll officially make.
>> An existing PCB design would be ideal but I can jury rig or  
>> breadboard
>> something too if it'll get the job done much cheaper.
>> Thanks for any/all info!
>
>
> -- 
> ::: derek holzer ::: http://macumbista.net :::
> ---Oblique Strategy # 167:
> "Use cliches"
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy