by EWBrown » Sun Oct 03, 2010 6:51 pm
I wonder if the Hammond 124B interstage transformer might be useful for this application.
It has a nominally 10K primary and 90K CT secondary, so the total winding ratio is 1:3, or 1:1.5 either side of CT. THis trannie has some nickel lams, so the overall freq response is a bit better than the standard 124, and it is open frame, so some kind od shielding may be necessary, especially for low level signals and high gain stages, in order to prevent or at least seriously reduce any magnetic field AC hum pickup problems. . Maybe a small steel box, or even a snall "tin" steel can, like the type that tomato paste comes in.
Friend of mine here, who plays in a Christian rock band, has an acoustic guitar with both balanced XLR output and standard single-ended 1/4 inch jack. It has some on-board electronics, has the treble and bass controls as well as volume, and pickup selectors, as well as a built-in "tuner".
/ed B
Real Radios Glow in the Dark