MOTM

----- Original Message ----- 
From: Tony Allgood <oakley@...>
But I don't get this. Surely the top output should be the sum of the top
row of inputs. Inserting a jack in these automatically disconnects this
from the next three. Its also easier to do, since you can do this with
the NC contacts in the 112A.
---
Well, after looking at Moe image 1 as Paul has indicated, I agree.  And
I agree that the switching can be done with the NC contact of a 112A.
although that might not fit Paul's way of doing things.

You can also do it with a normal stereo 113 A with no switches using the 
"ring" connection as a shorting switch to ground.  Since that is DIY OT,
anyone interested in how I did that on my homebrew can e-mail me 
privately.  It only added a couple of resistors.

Larry H