Greetings to all, After a long time I was able to complete my project. I built a single channel Deluxe Reverb in a Princeton cabinet. The Tone Stack would be a larger AB763 and the mid pot is welded as a potentiometer and not as a variable resistor. A capacitor was added at the output of the reverb circuit as in the silverface. Before building my Deluxe Reverb, I built that of a friend and it turned out that I had little headroom. I consulted Rob Robinette and he recommended that I add a 330K resistor before the phase inverter. Also, I used a 100Ω resistor in the negative feedback tail. The speaker is the Jensen C12N.