[sdiy] Ultrarough draft of my hot-rodding of the Music Easel ring mod

[Grant Richter]

>
>> 3. Along the same lines you could AC couple the bottom of R22 to a  
>> panel jack, and the top of R19 same way which will give you the  
>> positive and negative half-wave rectified distorted signal.
>
> I'm guessing it would be good to buffer these on the way out, so I  
> put in some noninverting buffers. Would it be better to put the cap  
> at the input to the buffer (say 4.7 uf), going to the + terminal,  
> with say a 100K resistor from + to ground to provide a DC path for  
> the op amp, or would it be better to connect the points you mention  
> straight into the + terminal, and put the cap at the output of the  
> op amp, maybe followed by a 100K resistor to ground to make sure  
> the output doesn't start floating at odd places and make a pop when  
> you plug something in?
>
> Basically I guess I'm asking if I should AC couple at the input of  
> my buffer or at the output of my buffer.

Again, those nodes are only two diode drops from the low impedance op- 
amp output. I would make it as simple as possible and just put a  
0.1uF/50v cap in series to block the DC offset. They are not a big  
deal and I wouldn't waste a buffer on them, or even an expensive cap.  
Plugged into a 100K input it will hardly disturb a 1.5K resistor and  
diode.

I mean they are highly non-linear and half-wave rectified, nasty. Why  
try to make high fidelity something you already know sounds bad?

But bad sounds can be good in context, for example "industrializing"  
a drum tack.