Quote:
Originally Posted by Tim Farrant  Matt, because the output of the opamps is 180 degrees out of phase (assuming the inputs are) then the 100uF capacitors are not really in series. Imagine if the primary of the output TX had a grounded centre tap, this would be the same thing as the circuit stands. |
I don't think so. The transformer does not have a grounded center tap on the primary, which means the only audio circuit path from one amp's output is through the other amp's output. When one amp is sourcing current, the other is sinking, and vice versa. Therefore, the output caps ARE in series, and their effective capacitance is halved.