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

[Aaron Lanterman]

On Nov 27, 2008, at 6:52 AM, Grant Richter wrote:

>> 2. Bring out IC1a pin 1 to a front panel jack through a 1K. This is  
>> a highly distorted signal, or a free "fuzzed" version of the MODIN  
>> signal.

Added!

> 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.

> 4. Make the SYMTR trimmer a combination of trimmer and front panel  
> control. The you can have a fixed trimmed carrier null, but also be  
> able to unbalance the carrier in a controlled way like Don does in  
> the bottom section of the 285.

Oooh, I'm now curious as to what's inside a 285...

- Aaron